NEW
Font size
WorksheetsStoichiometry
Total questions: 7
Worksheet time: 14mins
Avogadro's constant can be defined as
1 mole of a substance that consists of 6.02 x1023 particles.
a substance that has a constant of 6.02 x1023
1 mole of a substance that consists of 6.02 x1023 gram
a substance that has a constant of 6.02 x1023 gram
Molar mass is
the mass of 1 mole of a substance.
the mass of a substance.
the mass of 6.02x1023 gram
the mass of 1 mole of 6.02x1023 gram
The molar mass of sodium chloride is
23 + 35.5
23 x 35.5
23x2 + 35.5
23x2 + 35.5 x2
The formula to relate mass, mole and molar mass
mole = molar mass/ mass
mole = mass/molar mass
mass=mole/ molar mass
molar mass = mole/ mass
Find the mole of 4g of NaOH.
mole =4/(23+16+1)
mole = 4x(23+16+1)
mole = (23+16+1)/4
mle = (23+16+1)x4
Find the mass of 0.5 mol oxygen gas, (O2)
0.5 = mass/ (16)
0.5 = mass/ (16x2)
0.5 = mass x (16)
0.5 = mass x(16x2)
The molar mass of ammonium phosphate (NH4)3PO4
14+1x4+3 +31+16x4
3(14+1x4)+31+16x4
14+1x7+31+16x4
14+1x12+31+16x4
