Review for chem test
How many moles are in 32.7 grams of ethanol (C2H6O)?
0.710 moles C2H6O
How many atoms are in 24g of Carbon?
1.2x10^24 atoms
What is the molar mass of Ca(NO3)2?
164.10g/mol
How many moles are in 58.6L of Nitrogen gas (N2) at STP?
2.62 Moles
How many atoms are in 5.5 moles of atoms?
3.3x10^24 atoms
What is the percent Composition by mass of Hydrogen in H20?
11.2%
What is the molar mass of (NH4)3PO4
149.12g/mol
Calculate the percent by mass of iron in FeCl3-.
34.43%
Determine the percent by mass of Carbon in C6H10O4-.
49.29%
What is the mass of 0.850 moles of sulfur dioxide (SO2)?
54.5g SO2
What is the molar mass of SO2?
64.07g/mol
How many moles is 4.6x10^24 Sulfur atoms?
7.6 Moles
What is the volume in liters of 3.80 moles of CO2 gas at STP?
85.1L
Determine the molecular formula of a compound with the empirical formula CF2 and a molar mass of 200.04 g/mol.
C4F8
A compound has a empirical formula C2H5N and a molar mass of 86.16g/mol. What is its molecular formula?
C4H10N2
Whats the empirical Formula of C18H12O9?
C6H4O3
Calculate the molecular formula of a compound with the empirical formula C2H2O and a molar mass of 126.12g/mol.
C6H6O3