More PRACTICE for Unit 4-3
1) Alfonso and Sarah like to go skydiving together. Alfonso has a mass of 88 kg and Sarah has a mass of 66 kg.
While in free fall together, Alfonso pushes Sarah horizontally with a force of 12.3 N.
REMEMBER: What is the relationship of these two forces?
If their forces are equal, does this mean their accelerations are equal?
If Alfonso is the larger mass, would his acceleration be more or less than Sarah (smaller mass).
a. What is Alfonso's horizontal acceleration?
b. What is Sarah's horizontal acceleration?

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Which branches of natural science include the study of an organism that lived 10 million years ago