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3 years ago

What mass of benzene takes up 325 mL if its density is 0.874 g/mL?

Chemistry

1 answer:

allsm [11]3 years ago

4 0

Answer:

<h3>The answer is 284.05 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 325 mL

density = 0.874 g/mL

We have

mass = 325 × 0.874

We have the final answer as

Hope this helps you

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For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCL2)

Natasha_Volkova [10]

This is an incomplete question, here is a complete question.

For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂)

Perform the following calculations:

A) Calculate ΔS at 298 K (ΔH= -220 kJ/mol and ΔG= -206 kJ/mol

B) Assuming that ΔS and ΔH change little with temperature, calculate ΔG at 450 K.

Answer :

(a) The value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) The value of ΔG at 450 K is, -199 kJ/mol

Explanation :

(a) According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy = -206 kJ/mol

$\Delta H$ = enthalpy change = -220 kJ/mol

$\Delta S$ = entropy change = ?

T = temperature in Kelvin = 298 K

Now put all the given values in the above formula, we get:

$-206kJ/mol=-220kJ/mol-298K\times \Delta S$

$\Delta S=-0.0469kJ/mol.K$

Thus, the value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy = ?

$\Delta H$ = enthalpy change = -220 kJ/mol

$\Delta S$ = entropy change = -0.0469 kJ/mol.K

T = temperature in Kelvin = 450 K

Now put all the given values in the above formula, we get:

$\Delta G=-220kJ/mol-450K\times -0.0469 kJ/mol.K$

$\Delta G=-198.895kJ/mol\approx -199kJ/mol$

Thus, the value of ΔG at 450 K is, -199 kJ/mol

6 0

3 years ago

Which of the following happens when an ionic bond is formed? (1 point)

bazaltina [42]

This problem is asking for an explanation of what happens when an ionic bond is formed. Although the choices are not given in the question, one can find them on the attached file and realize the answer is C "a less electronegative atom donates an electron to a more electronegative atom" according to:

<h3>Types of bonds:</h3><h3 />

In chemistry, the forces that hold atoms together are known as chemical bonds and act like connections for atoms to form compounds. There exist ionic and covalent bonds, so the formers occur when electrons are thoroughly donated from the least electronegative atom to the most electronegative one.

On the flip side, covalent bonds occur when the electrons are shared between the two or more of the atoms forming the compound. In such a way, one can discard choices A and B because they are more related to covalent bonds.

Therefore, one can select C "a less electronegative atom donates an electron to a more electronegative atom" as the correct answer, because not all the elements are able to donate more than one single electron, and the less its valency, the more ionic the compound turns out to be.

Learn more about types of bonds: brainly.com/question/792566