Which sample contains the largest number of molecules?

1 answer:

4 0

The largest number of molecules is the same as the largest number of moles of this molecules
to calculate the number of moles you have to divide the mass by the molar mass

molar masses:
CO2: 44,01 g/mol
CH4: 16,04 g/mol
CBr4: 331,63 g/mol
CHBr3: 252,73 g/mol

largest nº of mol= 100/(the smallest molar mass possible)
= 100/16,04
=6,23 moles

all other molecules would be smaller than 6,23 moles because the molar mass is so high.

The answer is B : 1<span>00 g of ch4</span>

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svetlana [45]

Yes simplify. Anybody educated in chemistry can look at the equation and see that you have Fe+2 and CO3-2 combined to make FeCO3. But you don't need the 2s. Always simplify the subscripts.

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Answer:

Look at the pictures. On the 1 are compounds A and B. Compound c from b is on the 2nd image. Compound D is on 3rd image. Compound E is the same for compound C.

Explanation:

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