1. If an object has a mass of 1.0 Kg, what is it's weight on Jupiter with 2.5 times the gravitational force as on earth?
2. What net force is necessary to accelerate a 1000-Kg space probe 8m/s2?
3. How much heat that must be added to raise the temperature of a cup of coffee (250g) from 25.5ºC to 95.6ºC. Assume that the coffee has a specific heat of 4.187 ?
4. Which of the following reactions is not correctly balanced?
a. 4Fe + 3O2 → 2Fe2O3
b. C3H8 + 10O2 → 3CO2 + 4H2O
c. N2 + 3H2 → 2NH3
d. 2H2O → 2H2 + O2
5. How long would it take for a radio wave to travel 8.00 x 1010 m?
6. A pH 2 solution has _____ times the concentration of hydroxide as a pH 6 solution.