Limestone breaks down when heated to form quicklime and carbon dioxide. what type of reaction is this?

Scientists can tell the average temperature of the earth by studying an ice core. true or false

Oxygen and tin 4 chloride react form chlorine and tin 3 oxide

A certain voltage is applied to a copper wire and to a germanium wire of the same thickness and length. how will the current in the two wires compare?

Potassium fluoride (kf), a salt, has a molecular weight of 58.10 grams. how many grams would be needed to mix 1.0 liter of 0.10 m salt solution? 0.17 g 580 g 17 g 5.8 g

A sample of gas has a pressure of 1.8 atm and a volume of 2.5 L, what would be the pressure of this sample of gas if the volume decreases to 1.2 L? Show all of the work used to solve this problem.

Much of life on Earth is based in aquatic biomes. What property of water allows life to survive in liquid water?

A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have? 13 9 5 4

Calculate the maximum mass of carbon dioxide that could be obtained by adding excess hydrochloric acid to 15 g of calcium carbonate.

True or false: during dry weather, the water level in a small pond drops because of runoff.

Bradley hit a baseball with a bat. The baseball then hit a window and caused the window to break. Where did the energy that broke the window come from?