how many grams of ch3oh must be added to water to prepare 175 ml of a solution that is 1.0 m ch3oh ?

Answer:

Volume occupied by oxygen gas at 15 degree centigrade​ is equal to \(316.5\) centimeter cube

Explanation:

Assuming Pressure is constant.

\(\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

where T1 and T2 are temperature in Kelvin

Substituting the give values we get-

\(\frac{300}{273} = \frac{V_2}{288}\)

\(V_2 = \frac{288*300}{273} \\V_2 = 316.5\)

Volume occupied by oxygen gas at 15 degree centigrade​ is equal to \(316.5\) centimeter cube

Answer: the answer is true

Explanation:

Answer:

a salt

Explanation:

compounds are made of molecules but we need to mention the type of compound formed.

Answer:

A salt

Because compounds are made of molecules but we need to mention the type of compound formed.

Answer:

the proton

Explanation:

Inside an atom there are neutrons which  have a neutral charge (no charge) and protons which have a positive charge. Outside an atom there are electrons those have a negative charge.

Answer:

true

Explanation:

The symmetries that are consistent with a two-dimensional crystal include translation; 1-, 2-, 3-, 4-, and 6-fold rotations; reflection and glide.

Therefore, the answer is option C: Translation; 1-, 2-, 3-, 4- and 6-fold rotations; reflection and glide.

Two-dimensional crystals consist of two-dimensional lattices that can be defined by their symmetries.

They have five fold and higher rotation axes prohibited by the crystallographic restriction theorem.

The seven crystal systems and the fourteen Bravais lattices can be used to classify two-dimensional lattices based on their symmetries. All seven crystal systems have been found in two-dimensional lattices.

To learn more about symmetries here:

https://brainly.com/question/29636730

#SPJ11

water into vapor is the answer

Answer:

liquid water turning into vapor

Explanation:

because physical changes alter only the size

Ester group presence is shown by the carbonyl stretching C=O. for ester, which is found to be about 1735 cm-1.

It is an oily layer that forms on water at normal temperature and is a colourless liquid with low solubility in water. In addition to this, the structure of methyl butanoate can also be determined using IR spectra.

What is the purpose of methyl butanoate?

A white liquid with an apple-like odour is methyl butyrate. It serves as a solvent as well as a flavouring and aroma ingredient.

Methyl butyrate is a member of the group of organic substances called fatty acid methyl esters.

"Methyl butanoate" is the name given to the ester produced by the condensation reaction between methanol and butanoic acid.

To know more about IR spectra, visit:

https://brainly.com/question/29039407

#SPJ4

Answer:

if youre talking about macros to lose/gain weight then the Macronutrients refer to carbs, fats and protein — the three basic components of every diet. you cant tell them apart by looking at them but read labels and ingredients listed from packages or you can search them up

hope this helps!

give a follow/brainiest if you can<3

Moles are the unit of measurement that estimates the amount of the substance in a sample. It directly compares the amounts of substances. Thus, option c is correct.

Moles are said to be the SI unit to estimate the number of substances like atoms, molecules, ions, etc., in a sample. It is used to measure the elementary entities that are small in size.

It is abbreviated as mol and is equivalent to 6.02214076 × 10²³ particles (Avogadro number). It can be calculated by mass and the molar mass of the substance and is shown as,

Moles (n) = mass ÷ molar mass

Where mass is given in grams and molar mass in grams/ mol.

The moles are used to estimate the molarity and are also used in the ideal gas equation. The moles will be more in the substance with less molar mass and vice versa.

Therefore, option c. moles directly compares the amounts of substances.

Learn more about moles here:

https://brainly.com/question/15209553

#SPJ6

The electrical potential of K+ is -98.88 mV if K (outside) / K (inside) = 4.65 / 155mM and the resting potential inside the cell is -90mV; and the K+ ion will flow out of the cell.

The electrical potential is the amount of work required to move a unit of charge from one location to another, separated by a distance, and affected by the electrical field. Electrical potential can be defined as the potential energy per unit charge; the more charge that moves through the potential, the greater the potential difference. The unit for electrical potential is volts (V).

Potential Difference (V) is calculated using the following equation:ΔV = (Vm)in – (Vm) outwhere ΔV is the potential difference across the membrane; (Vm)in is the potential inside the membrane; and (Vm) out is the potential outside the membrane. Electrical potential of K+Electrical potential of K+ is calculated using the Nernst equation:

EK = (RT/zF) × ln ([K]out/[K]in)EK = electrical potential of K+;

R = universal gas constant = 8.314 J/(mol.K);T = temperature = 37 °C = 310.15 K; z = charge of ion; F = Faraday's constant = 96500 C/mol; [K]out = concentration of K+ outside the cell;[K]in = concentration of K+ inside the cell. Substituting all the values in the above formula, we get;EK = (8.314 × 310.15) / (1 × 96500) × ln(4.65/155)EK = -98.88 mV Thus, the electrical potential of K+ is -98.88 mV.

Determine the direction of K+ flow in / out / equilibrium K+ will flow out of the cell. The reason is that the concentration gradient favors the outward flow of K+ ions. K+ is at a higher concentration inside the cell and a lower concentration outside the cell; hence, the ion will flow out of the cell.

The concentration of K+ inside the cell is 155 mM, and the concentration of K+ outside the cell is 4.65 mM; thus, the concentration gradient is favorable for the outward movement of K+ ions.

To know more about electrical potential visit:

https://brainly.com/question/28444459

#SPJ11

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass of gold bar = 34.5 g

volume = 17 mL

We have

\(density = \frac{34.5}{17} \\ = 2.02941176...\)

We have the final answer as

Hope this helps you

Answer:

In this experiment, the variable is the substance that was placed in the water. The student performed the experiment with four different substances (sodium chloride, vegetable oil, sugar, and glycerin), and she measured the effect of each substance on the water. All other factors, such as the volume of the water and the time that she stirred each beaker, were kept constant. Therefore, the correct answer is option C: "the substances that were placed in the water."

Answer: B

your welcome Bsbssnsnsmsllqql

Answer:

3A: c

7A: d

1A: b

6A: f

2A: e

5A: a

Explanation:

3A: needs to -3 electrons to be stable, so +3 charge

7A: needs to +1 electrons to be stable, so -1 charge

1A: needs to -1 electrons to be stable, so +1 charge

6A: needs to +2 electrons to be stable, so -2 charge

2A: needs to -2 electrons to be stable, so +2 charge

5A: needs to +3 electrons to be stable, so -3 charge

ALL 8A ELEMENTS ARE STABLE, THEY HAVE THEIR VALENCE SHELL FULLY FILLED

The type of ion it will form is; 1) 3A needs +3 ions: Option C 2) 7A needs -1 charge: Option D 3) 1A needs +1 charge: Option B 4) 6A needs -2 charge: Option F 5) 2A needs +2 charge: Option E 6) 5A needs -3 charge: Option A.

The ion formation for each group based on their electron configurations and valence electrons.

3A (Group 13): Elements in Group 3A of the periodic table have three valence electrons. To achieve a stable electron configuration, they tend to lose three electrons to attain a full valence shell. Losing electrons results in a net positive charge, specifically a +3 charge.

7A (Group 17): Elements in Group 7A, also known as the halogens, have seven valence electrons. They tend to gain one electron to achieve a full valence shell, leading to a net negative charge of -1.

1A (Group 1): Elements in Group 1A, or the alkali metals, have one valence electron. They have a strong tendency to lose this one electron to achieve a full valence shell, resulting in a net positive charge of +1.

6A (Group 16): Elements in Group 6A have six valence electrons. They tend to gain two electrons to achieve a full valence shell, resulting in a net negative charge of -2.

2A (Group 2): Elements in Group 2A, known as the alkaline earth metals, have two valence electrons. They tend to lose these two electrons to achieve a full valence shell, resulting in a net positive charge of +2.

5A (Group 15): Elements in Group 5A have five valence electrons. They tend to gain three electrons to achieve a full valence shell, leading to a net negative charge of -3.

Therefore, the charges of the ions formed by each group are determined by their tendency to gain or lose electrons to achieve a full valence shell, following the octet rule.

To know more about ion here

https://brainly.com/question/29183072

#SPJ3

1. 2 moles of Calcium 8016 grams = 8.01x103 grams, 2. 3 moles of Sodium 69 grams = 2.07x1023 particles, and many more given below:

Calcium is an essential mineral that is found in the human body. It is necessary for the proper functioning of many organs, including the heart and muscles. Calcium is also important for the formation and maintenance of healthy bones and teeth. It plays a role in nerve and muscle function, blood clotting, and hormone secretion. Adequate calcium intake is important for both children and adults to ensure proper growth, development, and overall health.

3. 392 grams of Technetium = 9.10x1022 particles

4. 3.01x1024 particles of Chromium = 8.41x10-2 moles

5. 5 moles of Fluorine = 25 grams

6. 24 grams of Helium = 4.67x1023 particles

7. 1.806x1024 particles of Sulfur = 4.86x10-2 moles

8. 3 moles of Platinum = 195.2 grams

9. 240 grams of Argon = 6.67x1023 particles

To learn more about Calcium
https://brainly.com/question/30594488
#SPJ1

Answer:

reactants contain more energy in the decomposition reaction of sodium azide?

Explanation:

Answer:

C. Copper (II) nitrate

Explanation:

It's an inorganic compound that forms a blue crystalline solid

Ions are the charged species of the atom that carries an extra or less electron. The chemical name of the compound Cu(NO₃)₂ based on polyatomic ions is copper (II) nitrate. Thus, option C is correct.

An ionic compound is a type of chemical compound that is characterized by the presence of the ions or the charged species that results in electrostatic forces leading to the ionic bond formation.

The copper (II) nitrate compound is an example of an ionic compound as the Cu atom is metal and nitrogen and oxygen atoms are the non-metals. The metallic part of the compound carries a +2 charge while the non-metallic part consists of a negative charge.

Therefore, option C. Cu(NO₃)₂ can be named chemically as copper (II) nitrate.

Learn more about ionic compounds here:

https://brainly.com/question/9167977

#SPJ2

Answer:

Ethane molecules have no hydrogen bonds and need less energy to separate.

Explanation:

Ethane: has no hydrogen bonding, it has low melting, boiling points, and is a gas at room temperature.

Water: has strong hydrogen bonding between H and O, has relatively high melting and boiling points.

Statement that explains the relationship between boiling point of water and ethane and how the boiling point of water is higher than ethane is D:Ethane molecules have no hydrogen bonds and need less energy to separate.

Therefore, option D is correct.

Learn more at,:

https://brainly.com/question/10904296?referrer=searchResults

The compound that has ionic bonds is KBr (potassium bromide). Therefore the correct option is Option E.

Ionic bonds develop when two atoms with significantly differing electronegativities create a bond in which one atom (the metal) contributes electrons to the other atom (the non-metal). Potassium (K) is a metal in KBr, while bromine (Br) is a nonmetal. The electronegativity of K is low, whereas that of Br is high. When K and Br bond, K contributes its valence electron to Br, resulting in an ionic bond.

The other chemicals listed, on the other hand, have covalent bonding. When atoms with similar electronegativities share electrons in order to produce a more stable electron configuration, covalent bonds occur.

a. H2O has covalent bonds;

b. O2 contains covalent bonds; and

c. Ne is a noble gas that does not create bonds.

d. CO contains covalent bonds.

For such more question on ionic bonds:

https://brainly.com/question/977324

#SPJ4

A new covalent bond between the base and acid is created using its electron pair. The right answer is A.

A covalent bond is formed when two atoms exchange one or so more pairs of electrons. These electrons are being drawn to the two neutrons and the protons at the same time.  So when difference between difference in electronegativity of two atoms is too tiny for an electron transport to take place to create ions, a covalent bond is formed.

One electron pair is shared by two atoms to create a single covalent connection, with each atom contributing one electron to the link. A little line placed in between two atoms serves as its representation. Take the creation of molecules as an example. The valence shell of a hydrogen atom contains one electron.

To know more about covalent bond visit:

https://brainly.com/question/10777799

#SPJ4

Answer:

The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table – they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.

Explanation:

The metal that reacted most vigorously when placed in the acid is sodium, as it is an alkali metal.

At standard temperature and pressure, all of the bright, soft, extremely reactive alkali metals rapidly shed their outermost electron to create cations with charge +1.

One of the most reactive metals is the alkali metal. They have greater atomic radii and low ionization energies, which contribute to this. They have an oxidation state of 1, and they frequently give electrons during reactions. These metals stand out for their supple texture and silvery hue.

The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table – they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.

Therefore, the correct option is d. sodium.

To learn more about alkali metals, refer to the link:

https://brainly.com/question/18153051

#SPJ2

The question is incomplete. Your most probably complete question is given below:

Oxygen

magnesium

iron

sodium

Answer ;

Your answer is C

Explanation:

The statement you provided is correct. In a mixture of gases, each gas exerts its own partial pressure independently of other gases present.

This is known as Dalton's Law of Partial Pressures. Additionally, in a closed system, pressure and volume have an inverse relationship, as described by Boyle's Law.

In a mixture of gases, each gas exerts its own partial pressure: This is known as Dalton's law of partial pressures. According to this law, in a mixture of gases, the total pressure is the sum of the partial pressures of each individual gas in the mixture.

In a closed system, pressure and volume have an inverse relationship: This is known as Boyle's law. According to this law, when the temperature of a gas is held constant, the pressure and volume of the gas are inversely proportional.

The amount of gas that will dissolve in a fluid is determined by the solubility of the gas in the given fluid: This is known as Henry's law. According to this law, the amount of gas that dissolves in a liquid at a given temperature is directly proportional to the partial pressure of the gas above the liquid.  

Lastly, the amount of gas that dissolves in a fluid depends on the solubility of the gas in that particular fluid.

To learn more about Dalton's Law here:

https://brainly.com/question/30459983

#SPJ11

Answer:

Explanation:

This link will take you to a work sheet that I think might help.

Answer:

Atoms are neutral; they contain the same

samenumber of protons as electrons. By

definition, an ion is an electrically charged

particle produced by either removing

produced by either removingelectrons from a neutral atom to give a

produced by either removingelectrons from a neutral atom to give apositive ion or adding electrons to a neutral atom to give a negative ion.

Answer:

C2H5OH is a formula of ethyl alchol or ethanol.

alkenes are characterisized by carbon-carbon double bond.

burning is an example of exothermic reaction

atomic number of element is x the symbol of its ion is +1 bcz it will lose one electron

if temperature increases then rate of chemical reaction increases

Explanation:

i hope this will help you :)

the pressure of O2 in the 2.50 L glass container at 22.0°C would be 2.23 atm.

To solve this problem, we need to use the ideal gas law, which relates the pressure (P), volume (V), temperature (T), and number of moles (n) of a gas:

PV = nRT

where R is the gas constant (0.08206 Latm/mol·K).

We can start by calculating the number of moles of O2 produced from the decomposition of KClO3. The balanced chemical equation for this reaction is:

2 KClO3 → 2 KCl + 3 O2

From this equation, we can see that 2 moles of KClO3 produce 3 moles of O2. Therefore, the number of moles of O2 produced from 6.50 g of KClO3 is:

n(O2) = (6.50 g / 122.55 g/mol) x (3 mol O2 / 2 mol KClO3) = 0.1576 mol O2

Next, we need to calculate the temperature of the gas in Kelvin. We are given the temperature in Celsius, so we can convert it to Kelvin by adding 273.15:

T = 22.0 + 273.15 = 295.15 K

We also know the volume of the container (V = 2.50 L).

Finally, we can rearrange the ideal gas law to solve for the pressure (P):

P = nRT / V

Plugging in the values we calculated, we get:

P = (0.1576 mol) x (0.08206 Latm/mol·K) x (295.15 K) / (2.50 L) = 2.23 atm

What is decomposition?

Decomposition is a chemical reaction in which a single compound is broken down into two or more simpler substances.

To know more about decomposition visit:

brainly.com/question/8009068

#SPJ11

Answer: A. The variable c

============================================

Explanation:

Q = heat transferred

m = mass

c = specific heat

\(\Delta T\) = delta T = change in temperature