1.c 2.d 3.b 4.a 5.a 6.a 7.b 8.b 9.d 10.
Answer:
1.53 × 10²³ molecules As₂O₃
Explanation:
Step 1: Define
Diarsenic Trioxide - As₂O₃
Avagadro's number: 6.02 × 10²³ atoms, molecules, formula units, etc.
Step 2: Use Dimensional Analysis
= 1.52908 × 10²³ molecules As₂O₃
Step 3: Simplify
We have 3 sig figs.
1.52908 × 10²³ molecules As₂O₃ ≈ 1.53 × 10²³ molecules As₂O₃
Answer: 1 mole of
has the greatest mass.
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP , contains avogadro's number
of particles and weighs equal to the molecular mass of the substance.
1 mole of
has a mass of 40 g.
1 mole of
has a mass of 28 g
1 mole of
has a mass of 32 g
1 mole of
has a mass of 16 g.
1 mole of
has a mass of 30 g.
Thus the greatest mass is of 1 mole of 