Composition of compounds
Calculate the mass percent composition of carbon in CH4
74.88%
Calculate empirical formula 1.651 g Ag, 0.1224 g O
Ag2O
Calculate the formula mass for C4H10
180.16 amu
Write the formula for the compound that forms between magnesium and sulfur
MgS
Determine the number of moles of hydrogen atoms in 0.0885 mol C4H10
0.885 mol H atoms
Calculate empirical formula 2.128 g Be, 7.557 g S, 15.107 g O
BeSO4
Calculate the number of moles in 72.5 g CCl4
0.471 mol CCl4
Mg3N2
magnesium nitride
Calculate the number of grams of sodium in 8.5 g of Na3PO4
3.6 g Na
Find molecular formula
CCl / 284.77 g/mol
C6Cl6
Calculate the number of moles in 12.4g of C12H22O11
0.0362 mol C12H22O11
CuNO2 and KClO3
copper (I) nitrite and potassium chlorate
How many kg of Cl. are in 25kg of CF2Cl2?
15 kg Cl
Calculate molecular formula C3H2N/ 312.29 g/mol
C18H12N6
How many molecules?n3.5 g H2O and 26.9g C8H18
1.2x1023 molecules H2O
1.53x1023 molecules C8H18
copper (II) chloride and LiNO2 * H2O
CuCl2 and lithium nitrite monohydrate
How many fluorine atoms are present in 5.85 g of C2F4?
How many bromine atoms in 35.2 g CH2Br2?
1.41x1023 F atoms
2.44x1023 Br atoms
Calculate molecular formula
C4H9/ 114.22g/mol
C8H18
A salt crystal has a mass of 0.12mg. How many moles of Na+ are present in the crystal? How many moles of Na+ are present in the crystal?
2.0531x10-6 mol Na+ and 2x1018 ions of Na +
beryllium chloride dihydrate and CrPO4 *3H2O