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Worksheetsmole calculations--Mass/particles
Total questions: 11
Worksheet time: 22mins
How many molecules are there in 31.8 moles of water?
572 g
1.91 x 1025 molecules
5.28x 10-25 molecules
1.77 g
Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C6H8O6 and a molar mass of 176 grams per mole.
Determine the number of moles of vitamin C in an orange that contains 0.171 grams of vitamin C.
30.1 moles
1030 moles
.000971 moles
.0001 mole
What is the mass of 0.75 moles of ammonium phosphate?
0.0044 g
91 g
110 g
74 g
What is the molar mass of calcium hydroxide, Ca(OH)2?
74.1 g/mole
57.1 g/mole
58.1 g/mole
57.1 u
A sample of silver contains 5.71 x 1022 atoms. How many moles of silver are present?
3.43 x 1046 moles
0.0529 moles
0.0948 moles
10.5 moles
Determine the mass of 2.40 moles of C6H12
201 g
115 g
230. g
353 g
A lump of MgO consists of 100 moles. What is the mass in grams?
(a)
How many molecules are in 6 mole of hydrogen sulfate?
6.02x1023 FU
6.02x10138 FU
5.90x1025 FU
3.61x1024 FU
A bag of fertiliser contains 14.52 kg of ammonium nitrate (NH4NO3). Calculate the number of moles of ammonium nitrate in the bag of fertiliser.
Give your answer to 1d.p
(a)
