2. Atoms & Elements

Mole Concept

Scelta multipla
How many moles are present in 199 grams of CCl_4?
152
views
Scelta multipla
How many molecules are present in 4.00 moles of glucose (C_6H_{12}O_6)?
218
views
Scelta multipla
How many moles are present in 22 grams of argon (Ar)? (Atomic mass of Ar = 39.95 g/mol)
150
views
Scelta multipla
A sample contains 18.0 g of water (H_2O). What is the number of moles present in the sample?
145
views
Domanda aperta
How many sodium ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃ is 126.05 g/mol.
1942
views
Scelta multipla
Which value approximately represents the number of atoms in one mole of gold?
158
views
Scelta multipla
How many xenon atoms are present in 2.36 moles of xenon (Xe)?
169
views
Scelta multipla
How many atoms are present in a 24 g sample of carbon (atomic mass = 12 g/mol)?
172
views
Scelta multipla
How many sodium atoms are present in 0.2310 g of sodium (Na)?
119
views
Scelta multipla
How many grams of glucose (C6H12O6) are present in 3.55 moles of glucose?
198
views
Scelta multipla
How many moles are present in 3.01 × 10^{22} atoms of magnesium (Mg)?
147
views
Scelta multipla
1 mole of which of the following substances contains the largest number of atoms?
127
views
Scelta multipla
How many moles are present in 8.50 × 10^{24} molecules of sodium sulfate (Na_2SO_4)?
65
views
Domanda aperta
How many atoms are present in 0.375 mol of palladium (Pd) atoms?
1364
views
Scelta multipla
How many grams are present in a sample of calcium (Ca) that contains 2.71 × 10^{20} atoms?
134
views