Question

@DanJS

Answer 1

A carbon and hydrogen compound has an empirical formula of CH2. Its molar mass is 70 g/mol. What is its molecular formula?

Answer 2

What is the mass of that empirical formula?

Answer 3

2 hydrogens and 1 carbon

Answer 4

yes

Answer 5

The molar mass of butane is 58.1 g/mol, and its empirical formula is C2H5. What is the molecular formula for butane?
is C4H10, right?

Answer 6

C5H10 for the first one right?

Answer 7

it's sort of a trial and error process, you have to find the coefficients

\(\sf x~M_{H}+y~M_{C}=70~g/mol\)

\(\sf x~(1~g/mol)+y~(12~g/mol)=70~g/mol\)

M=molar mass

Answer 8

for the second, multiply by 2

Answer 9

C2H5 = 29.06 g/mol

58.1 / 29.06 = about 2,, multiply by 2

Answer 10

C4H10

Answer 11

if i recall right, been years since freshman chem

Answer 12

...

Answer 13

Wish i was on the beach too @abb0t . haha, you live there or that a vacation pic