7. How many grams are in 2.75 moles of dinitrogen trioxide, N2
8. How many moles are in 25.8 grams of calcium
phosphate, Ca3
(PO4
)2
?
9. Determine the mass, in grams, of 2.51 x 1024
of dinitrogen trioxide, N2
O3
10.
?
How many atoms are in a sample of Ca3
mass of 82.47 grams?
11.
(PO4)2 that has a
molecules
b.) SI unit to measure the amount of a substance
c.) 6.02 x 1023
d.) the % by mass of each element in a
O3
?
How many liters are in 4.99 moles of oxygen?
Find the percentage composition for the following compound:
12.
sulfuric acid, H2
SO4
Calculate the empirical formula for the following compound:
13.
Find the molecular formula for the following compound:
14.
molecular mass is 70.0 g/mol.
32.4%, sodium, 22.5% sulfur, and 45.15% oxygen
The compound has an