If you have 8.56 g of H2, how many grams of NH3 can be produced?

Define a compound and give an example

When you heat a liquid, the molecules spread farther apart and the liquid expands, and when you cool a liquid, the molecules get closer together and the liquid condenses. How is water different?

Which is NOT a property of metals? A. brittleness B. conductivity C. ductility D. luster

Alpine Marmots are a type of rodent that have the ability to decrease their body activity to conserve food. These marmots most likely A. Build fires on cold winter nights. B. Migrate south for the winter. C. Hibernate during the cold winter months.

Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing carbon dioxide gas and water vapor. Calculate the moles of acetylene needed to produce of carbon dioxide.

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.