Assignment:
Q1. The weight of a body varies according to the force of gravity exerted on the body.
True
False
Q2. An anion is the a:
- Positive pole in an electrical system
- Subatomic part of an atom
- Molecule with a +1 net charge
- Negatively charged molecule
Q3. Determine the number of moles of aluminum in 96.7 g of Al:
- 0.279 mol
- 3.58 mol
- 7.43 mol
- 4.21 mol
- 6.02 ^ 1023 mol
Q4. The mass of four moles of molecular bromine (Br2) is:
- 80 g
- 320 g
- 640 g
- 140 g
- 24 ^1023 g
Q5. An irregularly shaped piece of metal with a mass of 114 g was placed into a graduated cylinder that contained 25.00 mL of water. This raised the water level to 42.50 mL. What is the density of the metal?
- 7.25 g/mL
- 6.5 g/mL
- 2.68 g/mL
- 0.592 g/mL