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2. Atoms & Elements

Mole Concept

2. Atoms & Elements

Mole Concept

객관식
How many moles are present in 199 grams of CCl_4?
109
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객관식
How many molecules are present in 4.00 moles of glucose (C_6H_{12}O_6)?
170
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객관식
How many moles are present in 22 grams of argon (Ar)? (Atomic mass of Ar = 39.95 g/mol)
103
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객관식
A sample contains 18.0 g of water (H_2O). What is the number of moles present in the sample?
106
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미해결 질문
How many sodium ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃ is 126.05 g/mol.
1768
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객관식
Which value approximately represents the number of atoms in one mole of gold?
119
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객관식
How many xenon atoms are present in 2.36 moles of xenon (Xe)?
126
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객관식
How many atoms are present in a 24 g sample of carbon (atomic mass = 12 g/mol)?
128
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객관식
How many sodium atoms are present in 0.2310 g of sodium (Na)?
93
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객관식
How many grams of glucose (C6H12O6) are present in 3.55 moles of glucose?
142
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객관식
How many moles are present in 3.01 × 10^{22} atoms of magnesium (Mg)?
113
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객관식
1 mole of which of the following substances contains the largest number of atoms?
93
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객관식
How many moles are present in 8.50 × 10^{24} molecules of sodium sulfate (Na_2SO_4)?
35
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미해결 질문
How many atoms are present in 0.375 mol of palladium (Pd) atoms?
1243
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객관식
How many grams are present in a sample of calcium (Ca) that contains 2.71 × 10^{20} atoms?
100
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