QUESTION 3

What is the density(in g/L) of a gas with a molar mass of 32.49g/mol at 2.569atm and 458K?

garri49 [273]

Answer:

$2.22~g/L$

Explanation:

According to the ideal gas law equation:

$pV = nRT$

Let's express the number of moles in terms of mass and molar mass:

$pV = \frac{m}{M} RT$

Let's divide both sides by volume:

$p = \frac{m}{MV} RT$

Notice that:

$\frac{m}{V} = d$

So the equation becomes:

$p = \frac{dRT}{M}$

Expressing density:

$d = \frac{pM}{RT}$

Substituting the given values:

$d = \frac{2.569~atm\cdot 32.49~g/mol}{0.08206~\frac{L~atm}{mol~K}\cdot 458~K} = 2.22~g/L$

7 0

4 years ago

A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog toys to one group, while anoth

kicyunya [14]

Answer:

Experimental: the dogs who get the toys

Control: the dogs who dont recieve a toy

Explanation:

expermental is the group that recieved the tested variable in this case that being the toy

control is the group that doesn't recieve the tested variable

4 0

3 years ago

Write balanced equations and expressions for ksp for the dissolution of each of the following ionic compounds. Write a balanced

Lina20 [59]

Based on the dissolution equation of BaSO4, the solubility product, Ksp, expression of BaSO4 is: [Ba^{2+}] × [SO4^{2-}]

<h3>What is solubility product Ksp of a solute?</h3>

The solubility product, Ksp, of a substance is an equilibrium constant which expresses the product of the concentration of ions produced by a solute.

The solubility of a solute depends on temperature, thus solubility product also depends on temperature.

The balanced equation for the dissolution of barium sulfate is given below:

BaSO4 ⇌ Ba^{2+} + SO4^{2-}

The solubility product for barium sulfate is given as;

Ksp = [Ba^{2+}] × [SO4^{2-}]

Therefore, the solubility product, Ksp, expression of BaSO4 is: [Ba^{2+}] × [SO4^{2-}]

Learn more about solubility product at: brainly.com/question/26405952

3 0

2 years ago

Calculate the vapor pressure in torr of a solution containng 24.5 g of glycerin (C3H8O3) in 135 mL water at 30.0* C; the vapor p

Otrada [13]

Psolution = X · PH_20
= 0.966 · 31.8 torr
= 30.7 torr

3 0

3 years ago

Which pair of compounds are both products of photosynthesis?

Lelechka [254]

Answer: Glucose and oxygen

Explanation:

The basic products of photosynthesis are glucose and oxygen. Photosynthesis is a process in which green plants produce there own food from carbon dioxide (CO2) and water (H2O) and in the presence of energy from the sun to produce glucose(food) and oxygen

After series of reaction, the overall equation for photosynthesis is

6CO2 + 6H20 + (sunlight ) → C6H12O6 + 6O2

Carbon dioxide + water + energy from sunlight to produces glucose and oxygen.

Answer is glucose and oxygen

4 0

3 years ago