What planet there maybe liquid water under a thick layer of ice

What happens to atoms in an oxidation-reduction reaction apex?

The atomic number gives the number of: A. Protons. B. Neutrons. C. Electrons. D. Protons and electrons in an ion.

How to calculate molar absorptivity without concentration

In general, if a reaction is spontaneous, the reactants possess more free energy than the products. TRUE FALSE

Consider a submarine cruising 30 m below the free surface of seawater whose density is 1025 kg/m3. What is the increase in the pressure exerted on the submarine when it dives to a depth of 110 m below the free surface?

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.