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Sholpan [36]
3 years ago
13

This is the chemical formula for talc Mg3(Si2O5)2(OH)2(the main ingredient in talcum powder):

Chemistry
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

0.022 mol O

Explanation:

Mg3(Si2O5)2(OH)2

We can see that 1 mol of this substance has 3 mol of Mg.

Oxygen altogether  is 5*2 (from (Si2O5)2) + 2(from(OH)2) = 10 +2 = 12

So, 1 mol of this substance has 12 mol oxygen.

So,  1 mol of this substance contains 3 mol Mg and  12 mol O, or

ratio Mg : O = 3 : 12 = 1 : 4

1 mol Mg ----- 4 mol O

0.055 mol Mg ---x mol O

x = 0.055*4/1 = 0.220 mol O

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<u>Explanation:</u>

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sattari [20]
Boyle’s law gives the relationship between pressure and volume of gases. It states that at constant temperature the pressure of gas is inversely proportional to volume of gas.
PV = k
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P1V1 = P2V2
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Chemistry check please... Thank you!
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Your answer is correct.

2) Total pressure = Partial pressure of Hydrogen + Partial pressure of water
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Your answer is correct

3) The molar fraction, volume fraction and pressure fraction of gasses are the same thing.
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