Why do the planets keep orbiting the sun

What is the molar mass of barium nitrate?

If O2 (g) reacts with H2 (g) to produce H2O, what is the volume of H2O obtained from 1 L of O2? Hint: Write a balanced equation first!

What equipment and "clothing" would be needed to explore the planet Uranus?

Why are some elements more reactive than others?

How is the mass of 1 mole of an element determined

If A is slowly added to a solution containing 0.0500 M of B and 0.0500 M of C, which solid will precipitate first? The solubility product constant for A2B3 is 2.30*10-8. The solubility product constant for AC4 is 4.10*10-8.

Research three different types of fire extinguisher and explain how these can be used to put out different fires, you must relate this to the fire triangle and the section that is removed

If a mineral has a daughter to parent ration of 3:1 (three daughter atoms for every one parent atom), how many half-lives have passed since the mineral formed?

What is true of the enthalpy value of an intermediate reaction? A. It always has a negative enthalpy value B. It is multiplied by 2 if the intermediate reaction is multiplied by 2 C. It is the same as the total enthalpy of reaction D.

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.