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Katen [24]
3 years ago
12

At stp,250cm3 of gas had a mass of 0.36g.what result does this give for the molar mass of the gas​

Chemistry
1 answer:
Dafna11 [192]3 years ago
5 0

Answer:

32,256g/mol

Explanation:

n= V/Vm

n = 0.25/22.4

n = 0.01

0.01 = 0.36/M

M = 0.36/0.01

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8 0
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What is the equation for "acid dissociation constant" of "carbonic acid"
Margaret [11]

Answer:

H2CO3 = 2H+ + CO3-

Explanation:

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6 0
3 years ago
The amount of 4.4 g of substance X is reported to be 0.1<br> mol. What is its molar mass?
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Explanation:Please see attachment for explanation.

8 0
3 years ago
What is the percent composition of Sb2F3.What is the percent composition of F in this molecule? Round the answer to five signifi
poizon [28]

Answer:

\%F=18.967\%

Explanation:

Hello,

In this case, a percent composition is computed by considering the atomic mass of each element in the compound as well as the number of atoms and the molar mass of the compound. Thus, Sb2F3 has a molar mass of 300.52 g/mol, antimony has an atomic mass of 121.76 g/mol and fluorine 19.0 g/mol, therefore, the percent composition of fluorine which has three atoms with five significant figures is:

\% F=\frac{3*19.0g/mol}{300.52g/mol}*100\%\\ \\\%F=18.967\%

Best regards.

3 0
3 years ago
Nickel(ii) chloride dissolves in water to form a light green solution. what ions are present in solution—that is, what is "swimm
ArbitrLikvidat [17]

Hello!

The ions that are present in solution are Ni⁺²(aq) and Cl⁻(aq)

Why?

When an ionic substance like Nickel Chloride (NiCl₂) dissolves in water, it dissociates into the individual ions that form the substance. Water molecules surround then the individual ions in a process called solvation.

It can be represented in the following chemical equation:

NiCl₂(s) → Ni⁺²(aq) + 2Cl⁻(aq)

Have a nice day!

7 0
3 years ago
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