What is the percent composition of K2CO3?
K = 56.58% C = 8.69% O = 34.73%
Calculate the percent composition of carbon, nitrogen and oxygen in acetamide, C2H5NO.
C = 40.66%, N = 23.77% 0 = 27.08%
What unit is used for molar mass?
g/mol
What is the molecular formula for a compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole.
C2H8N
Which compound has a higher percentage of oxygen, H20 or H2O2? Show calculations for a complete response.
H2O2
H2O = 11.20%H and 88.80%O
H2O2= 5.93%H and 94.06%O
If a compound's empirical formula is CH2O, what is the molecular formula? (Experimental molar mass = 60.0 g/mol)
C2H4O2
Why do we use scientific notation (nx10#)for Avogadro's number?
Because the number is too big (23 numbers the right of the decimal)!
What is the percent composition of each element in Ca3(PO4)2
Ca = 38.76% P = 19.97% O = 41.27%
What poison was found to be in the Tylenol of the "Case of the Poisonous Pill?"
cyanide