What is the molar mass of (NH4) 2O? Explain how you calculated this value.

A carpet sells for 25.99 a square yard. what is the price of the carpet per square meter

Why do hotter solutions react faster

When 2.246 grams of a calcium chloride hydrate was heated, 0.728 grams of water were released. Determine the formula of the hydrate

Which of the compounds c4h10, bacl2, ni (no3) 2, sf6 are expected to exist as molecules? which of the compounds c4h10, bacl2, ni (no3) 2, sf6 are expected to exist as molecules?

In the compound MgCl2MgCl2, the subscript 2 indicates that

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.