Use the chemical equation to complete the activity.
4Fe + 3O2 → 2Fe2O3
Iron (Fe) reacts with oxygen (O2) to form iron oxide. A scientist adds 15.4 grams of Fe to 3.6 grams of O2 to start the reaction. All of the iron and oxygen react to form iron oxide. Explain in detail how you can determine how many grams of iron oxide will be produced.
Use the law of conservation of matter in the explanation.
Answers
Answer:
14.54 g Fe2O3
Explanation:
The first step would be to balance the equation but since it's already balanced we don't have to worry about that.
Through the balanced equation, you can find the stoichiometry of the reaction, that is:
4 moles of Fe, react with 3 moles of O2, to produce 2 moles of Fe2O3
Chemistry (accurately stoichiometry) is all about ratios and proportions. The balanced equations gives you the standard ratio by which moles are produced.
So the next step (shown in the paper), is to convert the grams that are giving you in Moles, and you do this by dividing the number of grams given by the molar mass of the substance. The molar mass is the number of grams by which you can find exactly 6.022x10²³ molecules (one mole) of one specific substance.
15.4 g of Fe= 0.28 mol Fe
3.6 g of O2= 0.11 mol O2
Now that you have the quantity of moles, what you need to do is to look for the limitant reactant.
In a balanced equation, the number of moles in the reactants are the rules and they're gonna react completely with each other. If you want x quatity of reactants to react completely, then you will have to respect the proportion to the ratio given in the balanced equation.
But you will rarely follow the proportion so there will usually be a reactant that's gonna be limiting the reaction and one that is in excess. And how do you find this? Well, the easiest way to do it is:
Dividing the number of moles obtained by x element the coefficients of that element in the balanced equation. The one that has the smallest ratio, is the limitant reactants.Since the limitant reactant is gonna be limiting the reaction, all the stoichiometric procedures should be calculated through it, and in this case, the limitant reactant is O2.
But then how to establish the stoichiometric rule to find the number of Iron oxide (III) that's being produced?
Look back to the stoichiometry of the reaction:
To produce 2 moles of Fe2O3, you need 3 moles of O2.
But you have 0.11 mol O2.
Then establish a factor of conversion (shown in the picture)
The result is 0.07 mol of Fe2O3, but you need the answer in grams so you find the molar mass of Fe2O3 and then multiply it by the number of moles (0.07)
The answer is 14.54 g of Fe2O3
CHEMISTRY IS ALL ABOUT PROPORTIONS :D
Related Questions
Plan an investigation to find the order of reactivity of three metals. you should use the temperature change when each metal reacts with hydrochloric acid. [6 marks]
Answers
The investigation involves performing reactions between hydrochloric acid and three different metals, monitoring the temperature change, and analyzing the data to determine the order of reactivity. By comparing the temperature changes, it is possible to identify the most reactive metal and establish the order of reactivity among the three metals.
To investigate the order of reactivity of three metals using the temperature change when each metal reacts with hydrochloric acid, the following plan can be implemented:
1. Apparatus: Gather the necessary equipment, including a Bunsen burner, test tubes, stopper with a delivery tube, thermometer, hydrochloric acid, and three different metals (e.g., zinc, iron, and magnesium).
2. Preparation: Label three test tubes as A, B, and C. Fill each test tube with the same volume of hydrochloric acid.
3. Set up: Attach the delivery tube to the stopper, and place the stopper tightly on each test tube. Position the other end of the delivery tube into a beaker of water.
4. Reaction: Add a small piece of one metal (e.g., zinc) to test tube A, another metal (e.g., iron) to test tube B, and the last metal (e.g., magnesium) to test tube C. Observe the temperature change by reading the thermometer in the beaker of water.
5. Repeat: Repeat the experiment multiple times for each metal to ensure accuracy and consistency of results.
6. Analysis: Record the temperature change for each metal in a table. Analyze the data to determine the order of reactivity based on the magnitude of temperature change. The metal with the highest temperature change indicates the highest reactivity.
Based on the temperature change observed, the order of reactivity can be determined. For example, if the temperature change is highest for magnesium, followed by zinc, and then iron, the order of reactivity would be magnesium > zinc > iron.
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WHAT IS OZONE POLLUTION
Answers
Answer: In the Earth's lower atmosphere, near ground level, ozone is formed when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources react chemically in the presence of sunlight. Ozone at ground level is a harmful air pollutant.
Explanation: In the Earth's lower atmosphere, near ground level, ozone is formed when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources react chemically in the presence of sunlight. Ozone at ground level is a harmful air pollutant.
PLEASE HELP ASAP!!!
Please choose all that describe a series circuit.
Question 1 options:
A. The amount of current is the same at every point in a series circuit.
B. A series circuit has no resistors.
C. All of the parts of a series circuit—power source, wires, and devices—are connected along the same pathway
D. The electrons have multiple pathways to travel.
E. If there are many bulbs in a circuit with a battery (cell), it is very likely that the light will be brighter with each additional bulb.
F. Each time there is damage (break) in any one of the resistors the entire circuit will not function.
G. If one device in a series circuit burns out or is disconnected, the entire circuit is broken
Answers
Answer:
A
Explanation:
Answer is A
considering the approximate volume of cyclohexanol and the small amount of acid catalyst used within the experiment, would it be better to use a 25, 50, or 100ml round bottom flask? explain
Answers
25 ml of the round bottom flask is better
M.W. of cyclohexanol is 100.158 g/mol
density = 0.962 g/cm3
5.2 ml of cyclohexanol = 5.2×0.962/100.158 = 0.05 mole
0.05 mole × 100.158 = 5.008 g
in solvent-free reaction 25 ml is easy to distill
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what type of reaction do two salts typically undergo
Answers
When two salts interact, they typically undergo a double displacement reaction, also known as a metathesis reaction.
In this type of reaction, the cations and anions of the salts switch places, resulting in the formation of two new salts.
Double displacement reactions occur due to the exchange of ions between the two reactant salts. The positive ions (cations) from one salt combine with the negative ions (anions) from the other salt, and vice versa.
The exchange of ions takes place because some combinations of cations and anions form more stable compounds or precipitates.
During the reaction, if a product is insoluble, it may precipitate out of the solution, forming a solid precipitate. This is commonly observed when two soluble salts are mixed in an aqueous solution.
Double displacement reactions are commonly used in various chemical processes, such as in the synthesis of new compounds, precipitation reactions, and in the formation of insoluble compounds.
They play a significant role in fields like chemistry, industry, and medicine, contributing to the understanding and development of new materials and compounds.
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what differentiates a nonpolar covalent bond from a polar covalent bond? i. unequal sharing of electrons ii. ions iii. atoms of partial charge
Answers
The key differentiating factor between a nonpolar covalent bond and a polar covalent bond is the unequal sharing of electrons.
i. Unequal sharing of electrons: In a nonpolar covalent bond, electrons are shared equally between the atoms. This occurs when the atoms have similar electronegativity, meaning they have similar abilities to attract electrons. As a result, there is no significant difference in the electron distribution, and the atoms do not acquire partial charges.
ii. Ions: Ions are charged particles that have gained or lost electrons. Unlike ionic bonds, which involve the complete transfer of electrons, covalent bonds involve the sharing of electrons between atoms. Therefore, the presence of ions does not differentiate between nonpolar and polar covalent bonds.
iii. Atoms of partial charge: In a polar covalent bond, there is an unequal sharing of electrons due to differences in electronegativity between the atoms. One atom has a stronger pull on the shared electrons, resulting in a partial negative charge (δ-) on that atom, while the other atom has a partial positive charge (δ+).
This imbalance in electron distribution creates atoms of partial charge.
Therefore, the key distinguishing characteristic between a nonpolar covalent bond and a polar covalent bond is the unequal sharing of electrons, leading to the development of partial charges on the atoms in a polar covalent bond.
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Determine which base will work to deprotonate each compound in an acid/base extraction.
Answers
Bases that are useful for deprotonating compounds are:
NaHCO₃ or NaOH.
metal alkoxide
Sodium hydroxide
Benzene rings with carboxylic acids that are weak acids can be prepared using NaOH or NaHCO 3 due to the weakness of the carboxylic acid. deprotonated.
Metal alkoxides such as potassium tert-butoxide can be used to deprotonate benzene rings with three carbon chains attached to one carbon. Also, metal alkoxides are used because the benzene ring containing the hydroxyl group is a very weak acid.
A benzene ring with a hydroxyl group is a weak acid like a benzene ring with a carboxyl group, so it can be deprotonated with NaOH.
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.A person is unable to see distinctly the objects placed at large distances but is able to read a book comfortably. Name the defect of vision he is suffering from
Answers
Answer:
The defect of vision suffered by the person is Myopia
Explanation:
The person can't see farther objects but is able to read a book which is placed closely to the eyes, using these observations the person is suffering from MYOPIA(nearsightedness) in which observer see close objects clearly but farther objects appear blurred.
The light entering the eye isn't correctly bent, the eyeball becomes big , or the eye lens become too converging, which converges the light ray in front of the cornea
This defect can be cured by using concave lenses.
what are local winds. be more detailed. and in your own words
Answers
Answer:
High and low pressure regions form when there is a large temperature difference between the surface of the sea (or a large lake) and the land next to it. Local winds are created as a result of this. Warmer air from the ocean rises and then sinks on land, causing the temperature to rise over the land.
What type of reaction is this? 2H2 + O2 ==>2H 20 + Energy
Answers
Answer:
Combustion
Explanation:
Help on this question please
Answers
Answer:
First choice: 2
Explanation:
There are 2 phosphorous (P) in the substance.
Ignore the strontium (Sr3) part because you are looking to isolate the P from (PO4)2.
Break the chemical equation apart to get 1 Phosphorous atom, and 4 Oxygen atoms.
Now, multiple 1 by 2 because that are 2 phosphate to get 2 phosphorous atoms.
What is te commond that alcws moung a fle from one rlase to ancherr?
Answers
The command that allows moving a file from one location to another is the "mv command".
The mv command renames or transfers files and folders from one directory to another. A file or directory keeps its base file name when moved to a new directory. All links to other files are preserved when you transfer a file, with the exception of when you move it to a different file system. A directory and its contents are added beneath the existing directory when you transfer a directory into it.
The TargetDirectory option of the mv command allows you to provide a new file name or a new directory path name when renaming a file or directory.
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when a thermometer is placed in a substance, what is it actually measuring?
Answers
A thermometer is a device used to gauge temperature. It may gauge the temperature of a solid substance, like food, a liquid substance, like water, or a gas, like air.
Describe a thermometer?It was created to measure the temperature of the human body. It is a lengthy, narrow glass tube with a mercury-filled bulb at the end. A person's body temperature typically ranges from 35 to 42 degrees Celsius, or 37 in Celsius. This is why the clinical thermometers have a range of 35 to 42 C.
What measurement determines the energy content of a substance?The joule is the SI unit for all three types of energy (J). The energy required to change the temperature of a substance or object is measured using the terms specific heat and heat capacity.
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An atom has 3 protons, 3 neutrons, and 2 electrons. What is its mass number?
Answers
Answer:
mass number =protons +neutrons
Explanation:
3+3=6
Mass number of an atom is the sum of number of protons and neutrons. The mass number of an atom consists of 3 protons and 3 neutrons is 6.
What is atomic mass?Mass of an atom the total amount it weighs. Most of the space around a nucleus in the atom is empty. Hence, the mass is contributed from the nucleus.
An atom is composed of electrons, protons and neutrons. Protons and neutrons are located inside the nucleus and electrons are revolving around the nucleus through circular paths of fixed energy.
The atomic number of an atom is the number of electrons in its neutral state. The mass number of an atom is the sum of number of protons and neutrons in it. Thus the mass number of atom consists of 3 protons and 3 neutrons is 6.
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Explain why an organism dies if the respiratory and circulatory system 'paused' for a while.
Answers
Answer:
Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body
Explanation:
5. What are the two types of pure substances ?
Answers
Answer:
diamond and pure sugar.
Explanation:
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what are properties of ionic compounds? select all that apply. soft and malleable conduct electricity as solids crystal lattice structure high melting and boiling points
Answers
High melting points are properties of ionic compounds. An electrically neutral substance made up of positive and negative ions is known as an ionic compound.
A chemical molecule known as an ionic compound in chemistry is one that contains ions held together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the compound is generally neutral. These can be polyatomic species like the ammonium and carbonate ions in ammonium carbonate or straightforward ions like the sodium and chloride ions in sodium chloride. Since individual ions in an ionic compound typically have more than one closest neighbor, they are not thought of as belonging to molecules but rather as components of an ongoing three-dimensional network. When solid, ionic substances typically have crystalline structures.
Ionic substances have the qualities listed below:
1. They are brittle and crystalline crystals.
2. Both their melting and boiling temperatures are high.
3. Water can dissolve them.
4. Both in their molten and solution forms, they conduct electricity.
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what is the mass of 4 moles of almunium atom
Answers
Answer:
108 grams
Explanation:
A chemist mixes 50.0mL of a 1.0M NaOH solution with 50.0mL of a 1.0M Ba(OH)2 solution. Assuming the two solutions are additive, what is the pH of the resulting solution
Answers
Answer:
\(pH=14.2\)
Explanation:
Hello there!
In this case, according to the information in this problem, and considering these two bases are strong, it is necessary for us to calculate the total moles of OH ions as shown below:
\(n_{OH^-}^{from\ NaOH}=0.050L*1.0mol/L=0.050mol\\\\n_{OH^-}^{from\ Ba(OH)_2}=0.050L*1.0mol/L*2=0.10mol\\\\n_{OH^-}^{tot}=0.15mol\)
Now, the as the solutions are additive, the total volume is then 0.100 L and the concentration:
\([OH^-]=\frac{0.15mol}{0.100L}=1.5\)
And therefore, the pH is:
\(pH=14+log(1.5)\\\\pH=14.2\)
Regards!
2. 20g of solid NaOH are added to 250ml of 0. 10M FeCl2 solution. Given that Ksp for Fe(OH)2 is 1. 6x10^14, calculate the following.
a) the weight of Fe(OH)2 formed
b) the molar concentration of FE^2+ in the final solution
Answers
To solve this problem, we need to consider the reaction between sodium hydroxide (NaOH) and iron(II) chloride (FeCl2) and the solubility product constant (Ksp) for iron(II) hydroxide (Fe(OH)2).
The balanced equation for the reaction is:
2 NaOH + FeCl2 -> Fe(OH)2 + 2 NaCl
a) To calculate the weight of Fe(OH)2 formed, we need to determine the limiting reactant. We will compare the number of moles of NaOH and FeCl2.
Molar mass of NaOH:
Na = 22.99 g/mol
O = 16.00 g/mol
H = 1.01 g/mol
Molar mass of NaOH:
= 22.99 g/mol + 16.00 g/mol + 1.01 g/mol
= 40.00 g/mol
Moles of NaOH:
= mass / molar mass
= 2.20 g / 40.00 g/mol
= 0.055 mol
Moles of FeCl2:
= volume (in L) * molarity
= 0.250 L * 0.10 mol/L
= 0.025 mol
Since the stoichiometric ratio between NaOH and Fe(OH)2 is 2:1, we can see that 0.055 mol of NaOH will react with 0.0275 mol of FeCl2. However, the moles of FeCl2 available (0.025 mol) are less than this value. Therefore, FeCl2 is the limiting reactant.
The molar mass of Fe(OH)2 is:
Fe = 55.85 g/mol
O = 16.00 g/mol
H = 1.01 g/mol (2 hydrogen atoms)
Molar mass of Fe(OH)2:
= 55.85 g/mol + 16.00 g/mol + (2 * 1.01 g/mol)
= 89.87 g/mol
Weight of Fe(OH)2 formed:
= moles of Fe(OH)2 * molar mass
= 0.025 mol * 89.87 g/mol
= 2.2475 g
Therefore, the weight of Fe(OH)2 formed is approximately 2.25 grams.
b) The molar concentration of Fe^2+ in the final solution can be calculated by subtracting the moles of Fe(OH)2 formed from the initial moles of FeCl2, and then dividing by the final volume of the solution.
Initial moles of FeCl2:
= volume (in L) * molarity
= 0.250 L * 0.10 mol/L
= 0.025 mol
Moles of Fe^2+ remaining:
= initial moles of FeCl2 - moles of Fe(OH)2 formed
= 0.025 mol - 0.025 mol
= 0 mol
Final volume of the solution:
= 250 mL = 0.250 L
Molar concentration of Fe^2+ in the final solution:
= moles of Fe^2+ remaining / final volume
= 0 mol / 0.250 L
= 0 mol/L
Therefore, the molar concentration of Fe^2+ in the final solution is 0 mol/L.
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What type of bond is joining the two hydrogen atoms?
a. two hydrogen atoms sharing a pair of electrons.
b. covalent hydrogen hydrophobic ionic hydrophilic
Answers
Covalent hydrogen bond is joining the two hydrogen atoms.
The simplest material with a covalent hydrogen bond is the hydrogen molecule. Two hydrogen atoms, each with one electron in a 1s orbital, combine to produce it. The two electrons in the covalent link are shared by both hydrogen atoms, and each one takes on an electron configuration like that of helium.The hydrogen atom's single electron shell, which contains space for two electrons, is where the electrons are located. The same nature of the hydrogen atoms prevents either from stealing an electron from the other in order to complete its own electron shell and create an ionic bond. The two electrons are thus shared by the two hydrogen atoms in a covalent link.learn more about Covalent hydrogen bond here: https://brainly.com/question/20607646
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For the NH4+ molecule, determine the following:
a. number of total electrons. Answer
electrons
b. Number of electron pairs. Answer
electrons pairs
c. Name the molecular geometry (shape) of the molecule: Answer
d. State the hybridization around the central atom: Answer
e. State the bond angle between atoms: Answer
f. What is the net formal charge of the molecule: Answer
Answers
The total number of electrons in the \(NH4^+\) molecule is 10 electrons.
What is a molecule?A molecule is composed of more than one atom that is chemically combined together. We know that the \(NH4^+\)molecule is composed of nitrogen and hydrogen atoms.
Let us now determine the required information about the \(NH4^+\);
a) The total number of electrons in the \(NH4^+\) molecule is 10 electrons
b) The total number of electron pairs in the \(NH4^+\) molecule is 4 pairs
c) The molecular geometry of the \(NH4^+\) molecule is tetrahedral
d) The hybridization around the central atom in the \(NH4^+\) molecule is \(sp^3\)
e) The bond angle between the atoms in the \(NH4^+\) molecule is 109 degrees
f) The net formal charge in the \(NH4^+\) molecule is +1
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N the reaction methane + oxygen turns into carbon dioxide + water, the methane and oxygen are called
Answers
Answer:
Reactants
Explanation:
methane + oxygen turns into carbon dioxide + water
This is given as;
methane + oxygen --> carbon dioxide + water
In a reaction, all the substances before the arrow (the left side of the equation), are called Reactants!
100 cm³ of a gas at 27°C is cooled to 20°C at constant pressure .Calculate the volume of gas at 20°C.
Answers
According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;
\(\begin{gathered} V\alpha T \\ V=kT \\ k=\frac{V}{T} \\ k=\frac{V_1}{T_1}=\frac{V_2}{T_2} \end{gathered}\)where;
V1 and V2 are the initial and final volume of the gas
T1 and T2 are the initial and final temperatures of the gas (in Kelvin)
Given the following parameters:
\(\begin{gathered} V_1=100\operatorname{cm}^3 \\ T_1=27^0C=27+273=300K \\ T_2=20^0C=20+273=293K \\ V_2=\text{?} \end{gathered}\)Substitute the given parameters into the formula;
\(\begin{gathered} V_2=\frac{V_1T_2}{T_1}^{} \\ V_2=\frac{100\times293}{300} \\ V_2=\frac{29300}{300} \\ V_2=\frac{293}{3} \\ V_2=97.67\operatorname{cm}^3 \end{gathered}\)Therefore the volume of the gas at 20°C is approximately 97.67cm³
SERE
Which of the following is an input for cellular respiration?
а.
CO2
b. H2O
C. sunlight
d. O2
Please select the best answer from the choices provided
A
B
оооо
С
Answers
Answer:
d. oxygen (O2) is the answer
Need help on these questions
Answers
1. Based on the stoichiometry of the reaction:
a. The number of moles of iron oxide that would be formed with 1.82 moles of oxygen is 1.213 moles.
b) The number of moles of Fe that are needed to react with 0.5 moles O₂ is 0.66 moles.
c) The number of moles of Fe that are needed to produce 2.77 g of Fe₂O₃ is 0.0346 moles.
2. Based on the stoichiometry of the reaction:
a) When 1.76 moles of Potassium chlorate are reacted, the number of moles of O₂ that will be formed is 2.64 moles
b) The number of moles of O₂ that are produced from 4.17 moles of KCIO₃ is 6.255 moles.
What moles of products are formed?The moles of products that are formed are derived from the mole ratio as given in the equation of the reaction.
1. Equation of reaction: 4 Fe + 3 O₂ --> 2 Fe₂O₃
The number of moles of iron oxide formed = 1.82 * 2/3
The number of moles of iron oxide formed = 1.213 moles.
b) The number of moles of Fe that are needed to react with 0.5 moles O₂ = 0.5 * 4/3
The number of moles of Fe that are needed = 0.66 moles.
c) The number of moles of Fe that are needed to produce 2.77 g of Fe₂O₃ will be
Molar mass of Fe₂O₃ = 160 g/mol
The number of moles of Fe that are needed = 2.77/169 * 4/2
The number of moles of Fe that are needed = 0.0346 moles.
2. KCIO₃ ---> 2 KCI + 3 O₂
a. the number of moles of O₂ that will be formed = 1.76 * 3/2
the number of moles of O₂ that will be formed = 2.64 moles
b) The number of moles of O₂ produced = 4.17 * 3/2
The number of moles of O₂ produced = 6.255 moles.
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List six gases and the methods suitable to dry them
Answers
1. calcium chloride suitable method is Chemical drying method.
2. Hydrogen chloride, suitable method is Absorption method.
3. Methane, suitable method is Adsorption method.
4. Naphtha, suitable method is condensation method.
5. Calcium chloride, suitable method is Chemical method.
6. Hydrogen fluoride, suitable method is Absorption method.
What are gases?
Gases are samples of matter that has no fixed shape and takes the shape of the container it is filled into.
Gases such as calcium chloride can be dried through chemical drying method.
In conclusion, gases has no fixed shape and takes the shape of the container it occupies.
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A gas mixture with a total pressure of 4.6 atm is used in a hospital. If the mixture contains 5.4 mol of nitrogen and 1.4 mol of oxygen, what is the partial pressure, in atmospheres, of each gas in the sample?
Answers
Considering the Dalton's partial pressure, the partial pressure of nitrogen and oxygen is 3.634 atm and 0.966 atm respectively.
The pressure exerted by a particular gas in a mixture is known as its partial pressure.
So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
\(P_{T} =P_{1} +P_{2} +...+P_{n}\)
where n is the amount of gases.
Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture.
The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present:
\(x_{A} =\frac{n_{A} }{n_{total} }\)
So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:
\(P_{A} =x_{A} P_{T}\)
In this case, the mixture contains 5.4 mol of nitrogen and 1.4 mol of oxygen. So, the total number of moles of all the components present is 5.4 moles + 1.4 moles= 6.8 moles.
Then, the mole fraction of each gas can be calculated as:
\(x_{nitrogen} =\frac{n_{nitrogen} }{n_{total} }=\frac{5.4 moles}{6.8 moles} = 0.79\)\(x_{oxygen} =\frac{n_{oxygen} }{n_{total} }=\frac{1.4 moles}{6.8 moles} = 0.21\)So, being 4.6 atm the total pressure of the gas mixture, the partial pressure of each gas can be calculated as:
\(P_{nitrogen} =x_{nitrogen} P_{T}\)= 0.79× 4.6 atm= 3.634 atm
\(P_{oxygen} =x_{oxygen} P_{T}\)= 0.21× 4.6 atm= 0.966 atm
In summary, the partial pressure of nitrogen and oxygen is 3.634 atm and 0.966 atm respectively.
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What total volume of gas (at STP) is produced by the electrolysis of 4 moles of H2O?
Answers
Explanation:
\(v = vdm \times n\)
Vdm=22.4dm.
mole(n)=4 mol
therefore the total volume
\(v = 22.4 \times 4 \\ v = 89.6dm\)
Why are all molecules not compounds?
Answers
Answer:
Explanation:
All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.
Answer:
the last one
Explanation: