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grandymaker
17 days ago
11

A closed vessel system of volume 2.5 L contains a mixture of neon and fluorine. The total pressure is 3.32 atm at 0.0°C. When th

e mixture is heated to 15°C, the entropy of the mixture increases by 0.345 J/K.
What amount (in moles) of each substance (Ne and F₂) is present in the mixture?
(heat capacity of monoatomic gas = 3/2R and that for a diatomic gas = 5/2R
Chemistry
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A 50.0 mL Volumetric flask filled with aqueous solution of hydrogen peroxide has a total mass of 88.5 g. The mass of the volumet
alisha [2963]

Answer:

1.44 g/mL

Explanation:

The following information was derived from the provided question:

Volume (V) of H2O2 = 50 mL.

Total mass of flask and H2O2 = 88.5 g.

Mass of the flask = 16.5 g.

What is the density (D)?

Next, we will calculate the mass of hydrogen peroxide (H2O2).

This is determined as follows:

Total mass of flask and H2O2 = 88.5 g.

Mass of the flask = 16.5 g.

What is the mass of H2O2?

Mass of H2O2 = (Total mass of flask + H2O2) – (Mass of flask)

Mass of H2O2 = 88.5 – 16.5

Mass of H2O2 = 72 g

Finally, we will find the density of hydrogen peroxide (H2O2) as follows:

Volume (V) of H2O2 = 50 mL.

Mass (m) of H2O2 = 72 g.

What is the density (D)?

Density (D) = mass (m) divided by volume (V)

D = m/V

D = 72 g / 50 mL

D = 1.44 g/mL

In conclusion, the hydrogen peroxide (H2O2) density is 1.44 g/mL.

6 0
3 months ago
What is the mass of a solution that has a density of 0.775 g/ml and a volume of 50.0ml?
Tems11 [2777]
Hello!

D = m / V

0.775 = m / 50.0

m = 0.775 * 50.0

m = 38.75 g
6 0
3 months ago
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