Answer:
CO.
Explanation:
Assuming the given percentages are by mass, we can solve this problem via imagining we have <em>100 g of the compound</em>, if that were the case we would have:
Now we <u>convert those masses into moles</u>, using the<em> elements' respective molar masses</em>:
- 42.9 g of C ÷ 12 g/mol = 3.57 mol C
- 57.1 g of O ÷ 16 g/mol = 3.58 mol O
As the number of C moles and O moles is roughly the same, the empirical formula for the compound is <em>CO</em>.
I think if the number of snakes increased, the amount of rabbits decreases. Hope I got it right!!!!!!!! ; )
Answer:
13.1275%
Explanation:
Molecular formula of ethanol is C2H5OH
Molar mass of ethanol is 46.0684g/mol
Carbon: 24.02g/mol
Hydrogen: 6.05g/mol
Oxygen: 15.99g/mol
Mass percent of hydrogen = 6/46×100 = 13.1275%
Hope this helps, have a great day!