The volume of a balloon decreases, what happens to the air pressure within the balloon? Assume all other properties remain constant. A. It stays the same. B. It increases. C. It decreases.

If a sample contains 21.2 g N, how many moles of N does it contain? 0.66 mol 1.51 mol 14.01 mol 297.01 mol

While studying chemical and physical changes, students added salt to a glass of water. They stirred the salt until it dissolved and could no longer be seen. "That's a chemical change," Sarah stated. Do you agree? Explain.

What is the molar mass of Al (ClO2) 3? Explain how you calculated this value.

What must be balanced in order to have a balanced chemical equation?

Elements in a given period of the periodic table contain the same number of

The formula for binary ionic compound formed between cesium and fluorine

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

Calculate the specific heat of a metallic element if 50.0 g of the metal need 314 joules of heat energy to raise the temperature from 25°C to 50°C.

State the relationship between the number of electrons in a carbon-nitrogen bond and carbon-nitrogen bond energy

What are the characteristics of bones?