a student fills a paper cup with water and puts it in a freezer over night. when she takes the cup out the next day, she notices that the sides of the cup are pushed out. why did this happen. Explain?

The philosopher's stone weighs 43.2 g is placed in a graduated cylinder containing 63 ml of water. after the stone is added to the cylinder the water rises to 74 ml. what is the density of the stone? express your answer in g/ml.

What is the term used to describe the energy needed to get a reaction started? a. adhesion energy c. cohesion energy b. activation energy d. chemical energy

List 2 potential negative impacts that extraction of gold has on the environment?

What is the best definition of nuclear fusion

What would you multiply "moles of oxygen" by to get the units "grams of oxygen"?

Suppose that you have 23 g of silver. Also assume that this sample of silver is initially at 18 oC. What is the final temperature of this sample of silver after it absorbs 2.05 kJ of heat? csilver = 0.

The number of neutrons in the nucleus of an atom can be determined by (1) adding the atomic number to the mass number (2) subtracting the atomic number from the mass number (3) adding the mass number to the atomic mass (4) subtracting the mass

Trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 M HCl solution. How many moles of HCl are in the beaker? Remember, molarity = moles liter.

Why is the correct name of compound Silicon Pentoxide and NOT Silicon Pentoxide?

10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have what volume?