All the following are signs of chemical reaction may have taken place in a piece of glass except:

A. glass changes colors

B. new substances beside glass are form

C. shape of glass changes

D. energy is used or given off

Which lists all of the substances that appear in equilibrium constant expressions? pure gas and pure liquid pure gas and aqueous solution pure solid and pure liquid aqueous solution and pure liquid

How to convert 1.2*10^24 atoms of magnesium into moles?

Methyl benzoate was prepared by the reaction of benzoic acid with methanol in the presence of a mineral acid. the ester product was extracted into dichloromethane and then shaken with saturated sodium chloride solution.

1) If the pressure on 2.6 liters of a gas at 860 Torr is increased to 1000 Torr,

A Se ion has a mass number of 76 and a charge of - 2. Determine the number of neutrons, protons, and electrons in this ion.

If we know that 10.0 cm3 of ice has a mass of 9.19 g what is the density of ice

1. The is the particle in the nucleus of the atom that carries a positive charge and is counted to identify the atomic number. What's the answer

How many grams are there in 5.00 moles of lead Pb?

A large body in space that orbits a star and does not produce light of its own

Which type of substance is an electron-pair acceptor? O Lewis base O Brønsted-Lowry acid O Brønsted-Lowry base O Lewis acid