what is the theoretical yield of water vapor in liters that can be produced when 34 g of oxygen gas reacts with 6 grams of hydrogen gas at stp

Answer:

1.02 10 to the 23 power(or 100,000,000,000,000,000,000,000)

atoms of AL

Explanation:

ive had this question before

The name of the element symbol K will be potassium.

A material is said to be an element if all of its atoms contain the same number of protons, or if all of its atoms have identical atomic numbers. Chemical processes cannot break down elements because they might be the simplest chemically.

The name of the element with symbol K is potassium. It has atomic number 19 and has electronic configuration 2,8,8,1. It has 1 valence electrons that's why it is kept in group 1 of the periodic table.

Therefore, the name of the element will be potassium.

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Here are three equations representing the chemical reaction between a metal and an acid:

Zinc + 2HCl → ZnCl2 + H2

Iron + 2HNO3 → Fe(NO3)2 + H2O + NO

Magnesium + 2H2SO4 → MgSO4 + 2H2O + SO2

The three equations representing the reaction :

In this reaction, zinc (metal) reacts with hydrochloric acid to form zinc chloride and hydrogen gas.

In this reaction, iron (metal) reacts with nitric acid to form iron(II) nitrate, water, and nitric oxide.

In this reaction, magnesium (metal) reacts with sulfuric acid to form magnesium sulfate, water, and sulfur dioxide.

In each of these equations, the metal reacts with the acid to produce a salt, water, and sometimes additional products such as hydrogen gas (H2), nitrogen dioxide (NO2), nitrogen monoxide (NO), or sulfur dioxide (SO2), depending on the specific acid and reaction conditions.

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Answer:

The correct statement about the number of protons and neutrons in a nuclear change is: "The relative numbers of protons and neutrons can differ before and after the change, but the total number of those particles remains the same."

Explanation:

In a nuclear change, the total number of protons and neutrons (also known as nucleons) remains constant, but the specific arrangement of those nucleons can change. This can be achieved through processes such as nuclear decay, where an unstable nucleus emits particles and becomes more stable, or through nuclear reactions, where two or more nuclei collide and rearrange to form new nuclei. In either case, the total number of protons and neutrons is conserved, but the specific numbers of protons and neutrons in the resulting nuclei can be different from the original nuclei.

It's important to note that the total atomic mass (also known as the atomic weight) and total charge of a nucleus can change as a result of a nuclear change. The atomic mass is determined by the total number of protons and neutrons in a nucleus, so it will be different if the relative numbers of those particles change. The total charge of a nucleus is determined by the number of protons, so it will be different if the number of protons changes.

The molecule H₁₂O₆ does not exist in nature. The formula H₁₂O₆ suggests the presence of 12 hydrogen atoms and 6 oxygen atoms.

However, such a configuration is highly unstable and does not conform to the principles of chemical bonding and stability. In a typical molecule of water (H₂O), two hydrogen atoms are bonded to one oxygen atom. The Lewis structure for water would represent this bonding arrangement. Each hydrogen atom contributes one valence electron, and oxygen contributes six valence electrons.

The Lewis structure for water would show two lines (representing covalent bonds) connecting the oxygen atom to each hydrogen atom. Additionally, the oxygen atom would have two lone pairs of electrons (represented by dots) surrounding it. It is important to note that the Lewis structure represents the valence electron arrangement in a molecule and provides insight into its bonding and geometry.

However, the Lewis structure alone may not capture the full 3D shape and molecular properties. In the case of H₁₂O₆, the presence of 12 hydrogen atoms and 6 oxygen atoms is highly unlikely due to the unfavorable electron configuration and excessive charge repulsion.

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A compound of molecules results from the combination of atoms from the same or distinct elements. Reason: According to the atomic theory of matter: In 1808, it is declared by the British chemist John Dalton.

Dalton's atomic theory is founded on evidence, but Democritus had no supporting data for his idea. This is the primary distinction between the two theories' atomic theories.

All matter is made up of indivisible atoms, according to the first component of his theory. The second aspect of the theory states that the mass and properties of every atom in a particular element are the same.

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The pH of a 1.66×\(10^{-2}\)  M solution of the strong acid HBr is 1.78. The pH of a 1.66×\(10^{-2}\)  M solution of the strong acid HBr can be determined using the equation pH = -log[\(H_3O^+\)].

Since HBr is a strong acid, it will completely dissociate in water to produce \(H_3O^+\) and Br- ions. Therefore, the concentration of \(H_3O^+\) ions will be equal to the initial concentration of HBr, or 1.66×\(10^{-2}\)  M.

Using the equation pH = -log[\(H_3O^+\)], we can plug in the concentration of \(H_3O^+\) ions to find the pH:

pH = \(-log(1.66.10^{-2}) = 1.78\)

Therefore, the pH of a 1.66×\(10^{-2}\) M solution of the strong acid HBr is 1.78.

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Answer:

By adding, a few drops of AgNO3

Dilute HCl reacts with silver nitrate to give a white precipitate of silver chloride.

On the other hand there is no reaction observed when dilute Nitric acid is treated with silver nitrate solution. That is obvious

Reactions :-

HCl(aq) + AgNO3(aq) >>> AgCl(s) + HNO3(aq)

HNO3(aq) + AgNO3(aq) >>> No reaction + No precipitate

Answer:

This means that Antarctica once had a warmer climate.

Explanation:

Trees usually grow in warm climates, and Antarctica has little to no plant life.

Answer:

3?

Explanation:

Answer:

B has 3 atoms

trust me have done problems like these

Based on the items listed in the Item bank, the corresponding area that identifies each item is given below:

Metalloids - Silicon, Arsenic, and Antimony

Metals and non-metals - Can exchange electrons with each other to form ionic compounds

Metalloids and Non-metals - May have no luster

Metals - Tin, Calcium, and Potassium

Non-metals - Hydrogen, Oxygen, and Chlorine

Metals and metalloids - Can be electrical conductors

All - Comprised of atoms

Metals are elements that form positive ions by the loss of electrons.

Metals are good electrical conductors and have a characteristic luster. Examples are Tin, Calcium, and Potassium.

Metalloids or semi-metals have intermediate properties of metals and non-metals. They conduct electricity but do not have any luster. Examples are Silicon, Arsenic, and Antimony.

Non-metals form negative ions by electron gain. They do not have a luster and are poor conductors of electricity.

Examples are Hydrogen, Oxygen, and Chlorine.

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Answer:

to release free nitrogen into the atmosphere. This is the answer.

Answer:

to convert free nitrogen into usable nitrogen

Explanation:

got it right on the test boi

Answer:

NaI = Na + I2 (diatomic)

Mg3N2 = Mg + N2

MnCl2 = Mn + Cl2

K4Si = K + Si

Explanation:

First convert these written equations into chemical symbols.

Sodium iodide = NaI

Magnesium Nitride = Mg3N2

Manganese II Chloride = MnCl2

Potassium Silicide = K4Si

Then we predict the products by separating the elements.

NaI = Na + I2 (diatomic)

Mg3N2 = Mg + N2

MnCl2 = Mn + Cl2

K4Si = K + Si

However, notice that these are not balanced. If you want you can balance these.

The molecular geometry of a given element is octahedral and it has no dipole moment. Therefore octahedral, No would be the correct answer.

The SF6 molecule has no dipole moment because each S−F bond dipole is balanced by one of equal magnitude pointing in the opposite direction of the other side of the molecule.

The three-dimensional configuration of the atoms that make up a molecule is known as molecular geometry. In addition to providing details about the molecule's overall shape, it also provides data on the bond lengths, bond angles, torsional angles, and any other geometrical factors that affect each atom's position.

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Answer:

6/cal per minute

Explanation:

To get the unit rate (in this case, calories per minute) just divide 270 by 45.

Answer:

a globe

snow rain clouds

The statement "the instantaneous rate of a reaction can be read directly from the graph of molarity versus time at any point on the graph." is False

Instantaneous rate of reaction is the rate at which a chemical reaction is occurring at a specific moment in time.

It is the slope of the tangent line at that particular point in time. The instantaneous rate of a reaction can be determined from a graph of concentration vs time.

We must draw a tangent line at the point in the graph that we are interested in, and the slope of that tangent line is the instantaneous rate of the reaction.

The rate can also be determined by finding the slope of a secant line over a very small time interval.

So, the given statement, “the instantaneous rate of a reaction can be read directly from the graph of molarity versus time at any point on the graph” is not true, and the correct answer is False.

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A polar substance is HCl. Due to its higher electronegative nature and unequal distribution of the bonding electrons with Hydrogen in the HCl molecule, Chlorine (Cl) atom (H). Yet, the molecules H2 and Cl2 are not polar since both atoms in the molecules have similar electronegativity.

As the bonds between the two atoms in the Cl2 Cl 2 molecule are identical, it is nonpolar. Hence, the electronegativity of the two atoms would not differ from one another. As a result of the nonpolar nature of the bond, the entire molecule is also nonpolar. The shared pair of electrons in a chlorine molecule (Cl2) is attracted to both chlorine atoms in an equal amount, creating a nonpolar connection.Chlorine is therefore a non-polar chemical. Yet, the bonding electrons in H-Cl are not distributed equally between the two atoms. As it has a linear symmetry and two chlorine atoms with equal electronegativity, Cl2 (chlorine) is nonpolar in nature. Because of the same charge distribution on both atoms and the molecule's zero dipole moment, the chlorine molecule is nonpolar.

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Which atomic model that shows the atomic structure is missing from this set?

Dalton’s model

In 1898, J. J. Thomson proposed the first of many atomic models to come as he made the proposition that the shape of an atom was like a sphere.

This refers to the way and manner an atom is arranged and the things that are contained in it.

Hence, we can see that an atom contains:

Therefore, the atomic model that shows the atomic structure is missing from this set is Dalton's model.

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The complete question is:

The model of the atom has changed as scientists have gathered new evidence. Four models of the atom are shown below, but one important model is missing.

An image at left with overlapping red and blue balls in the center with a circular fuzzy green cloud outside them. An image at center left with a purple ball in the center surrounded by overlapping concentric black ovals, each with a small green ball on each of the 6 ovals. An image at center right with a large black cross in a purple circle with a black line around the purple, with 10 small green balls dispersed within the purple circle.

Which atomic model is missing from this set?

Bohr’s model

Dalton’s model

Rutherford’s model

Thomson’s model

Answer: B.  schrodingers model

Explanation:

correct on edge

An understanding of periodic trends is crucial as they relate to the properties of elements, their reactivity, and their behavior in chemical reactions. This knowledge aids in predicting electron configurations, determining bond orders, breaking compounds into elements, and utilizing elements effectively.

An understanding of periodic trends is important because the trends:

1. Allow prediction of electron configurations and bond orders: Periodic trends such as atomic size, ionization energy, and electron affinity provide information about the distribution and behavior of electrons in atoms. This knowledge helps in predicting electron configurations and determining bond orders in molecules.

2. Allow compounds to be broken into their elements: By understanding periodic trends, such as electronegativity and reactivity, we can predict how compounds can be broken down into their constituent elements through chemical reactions.

3. Allow confident analysis of the stock market: Periodic trends in the stock market are unrelated to the properties of elements and their reactivity. Therefore, periodic trends do not provide direct insights into stock market analysis.

4. Can be used to convert non-useful elements to useful ones: Periodic trends help in understanding the behavior of elements, which can be applied to develop processes for converting non-useful elements into useful ones through chemical reactions or refining techniques.

5. Relate to properties of elements and how they may react: Periodic trends provide information about various properties of elements such as atomic size, electronegativity, ionization energy, and reactivity. This knowledge helps in understanding the behavior of elements and predicting how they may react with other elements to form compounds.

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The inflation rate from 2014 to 2015, assuming 2014 as the base year, is 68.09%.

The inflation rate from 2014 to 2015, assuming that 2014 is the base year, can be determined using the Consumer Price Index (CPI). The CPI measures the cost of goods and services over time and is used to calculate inflation. The formula for calculating inflation rate using CPI is as follows: Inflation rate = ((CPI year 2 - CPI year 1) / CPI year 1) x 100To solve this problem, we first need to calculate the CPI for each year using the prices and quantities of nuts and meat.

Calculating CPI for 2014:CPI 2014 = (300 x $9) + (175 x $19) = $5,625 Calculating CPI for 2015:CPI 2015 = (420 x $9) + (340 x $14) = $9,460Using the CPI formula, we can calculate the inflation rate from 2014 to 2015:Inflation rate = ((CPI 2015 - CPI 2014) / CPI 2014) x 100= (($9,460 - $5,625) / $5,625) x 100= $3,835 / $5,625 x 100= 68.09% (to 2 decimal places) Therefore, the inflation rate from 2014 to 2015, assuming 2014 as the base year, is 68.09%.

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Answer:

E- Electrical

Explanation:

It converts mechanical energy to electrical energy

The volume of 0.067 moles of helium (He) gas at STP is equal to 1.5017 Liters.

Given the following data:

Scientific data:

To determine the volume of 0.067 moles of helium (He) gas at STP, we would use the ideal gas equation:

\(V = n\frac{RT}{P}\)

Where;

Substituting the given parameters into the formula, we have;

\(V = \frac{0.067 \times 0.0821 \times 273}{1}\)

Volume, V = 1.5017 Liters

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Answer:We can use the ideal gas law and the definition of vapor pressure to solve this problem.

First, we need to convert the vapor pressure from mmHg to atm:

565 mmHg = 0.743 atm

Next, we can use the ideal gas law to calculate the number of moles of gas in the flask:

PV = nRT

n = PV/RT

n = (0.743 atm) x (15.0 L) / [(0.08206 L·atm/mol·K) x (297 K)]

n = 0.436 mol

Since the molar mass of compound X is 84.91 g/mol, the mass of the gas in the flask is:

m = n x M

m = 0.436 mol x 84.91 g/mol

m = 37.0 g

Therefore, the mass of the liquid in the flask is:

50.0 g - 37.0 g = 13.0 g

So, the mass of the liquid once equilibrium is reached will be 13.0 g.

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1. The differential equation satisfied by y(t) is:  dy/dt = 0.6 kg/min

The amount of salt in the tank after t minutes can be represented by the function y(t). We need to find the differential equation that y satisfies.
Initially, the tank contains 100 L of pure water, which means there is no salt in the tank. As time passes, a solution with a salt concentration of 0.3 kg/L is added at a rate of 7 L/min. The salt concentration in the tank will increase with the addition of this solution.
At the same time, the solution is drained from the tank at a rate of 5 L/min. This will result in a decrease in the salt concentration in the tank.
To find the differential equation satisfied by y(t), we need to consider the rate of change of salt in the tank.
Rate of change of salt in the tank = Rate of salt added - Rate of salt drained
The rate of salt added is given by the product of the concentration of the solution (0.3 kg/L) and the rate at which the solution is added (7 L/min). So, the rate of salt added = 0.3 kg/L * 7 L/min.

The rate of salt drained is given by the product of the concentration of the solution (0.3 kg/L) and the rate at which the solution is drained (5 L/min). So, the rate of salt drained = 0.3 kg/L * 5 L/min.

Therefore, the differential equation satisfied by y(t) is:
dy/dt = (0.3 kg/L * 7 L/min) - (0.3 kg/L * 5 L/min)

Simplifying the equation:
dy/dt = 2.1 kg/min - 1.5 kg/min
dy/dt = 0.6 kg/min

So, the differential equation satisfied by y(t) is:
dy/dt = 0.6 kg/min

2. The amount of salt in the tank after 40 minutes is 24 kilograms.

To find the amount of salt in the tank after 40 minutes, we can solve the differential equation.

dy/dt = 0.6 kg/min

Integrating both sides with respect to t:
∫dy = ∫0.6 dt

Integrating, we get:
y = 0.6t + C

To find the value of C, we can use the initial condition that the tank initially contains 100 L of pure water, which means there is no salt. So, at t = 0, y = 0.

Substituting these values into the equation:
0 = 0.6(0) + C
C = 0

Therefore, the equation becomes:
y = 0.6t

Now, we can find the amount of salt in the tank after 40 minutes by substituting t = 40 into the equation:
y = 0.6(40)
y = 24 kg


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When starting with a chiral alkyl halide, the products of a substitution reaction can be either achiral or chiral, depending on the reaction mechanism and the stereochemistry of the nucleophile.

In an SN1 reaction, the nucleophile attacks the carbocation intermediate from either side with equal probability, resulting in a racemic mixture of both R and S enantiomers.

In contrast, in an SN2 reaction, the nucleophile approaches the alkyl halide from the opposite side of the leaving group, resulting in an inversion of stereochemistry at the chiral center. This means that the product will be the opposite enantiomer of the starting material, resulting in a chiral product.

However, if the nucleophile used in the SN2 reaction is achiral, such as a hydroxide ion, the product will be racemic, as the reaction can occur with equal probability on both sides of the molecule.

In summary, the products of a substitution reaction starting with a chiral alkyl halide can be either achiral or chiral, depending on the reaction mechanism and the stereochemistry of the nucleophile.

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The coefficient of Fe3+ when the following equation is balanced in basic solution is B. 2.

CN- + Fe3+ ? CNO- + Fe2+

In basic medium, add one OH- ion to both sides for balancing the H+ ions. And the reaction becomes,CN- + Fe3+ + OH- → CNO- + Fe2+ + H2OUse the inspection method to balance the reaction.CN- + Fe3+ + OH- → CNO- + Fe2+ + H2O1 1 1 1 1 1+1   1 2   1The coefficients of Fe3+ and Fe2+ are 1 and 1, respectively, which implies that the transfer of one electron takes place from Fe3+ to CN-.

Therefore, the coefficient of Fe3+ is 1 when the given equation is balanced in the basic medium. However, we can't consider the coefficient of Fe3+ as 1 because this equation cannot be balanced without changing the coefficients of Fe3+ and Fe2+.Thus, we modify the equation by making the coefficients of Fe3+ and Fe2+ 2 and 3, respectively.CN- + 2Fe3+ + 3OH- → CNO- + 2Fe2+ + H2O

Therefore, the correct answer is B. 2.

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Answer:

Thomson model of the atom

Explanation:

"plum pudding" from

raisins used to be called plums

distribution of electrons reminded many scientists of raisins

within Thomson's model's positively charged region of space

wikipedia

nuclearpowercom

Answer: 1(2)+6(2)=14

Explanation:

Not sure, but maybe.