What are signs that a chemical reaction has occured

What is the molar mass of (NH4) 2SO4

How many moles of s are needed to combine with 0.208 mol al to give al2s3?

What scientist designed an experiment that enabled the first successful detection of an individual subatomic particle? A. Niels Bohr B. John Dalton C. J. J. Thompson D. Robert Millikan

A sample of grape juice has a hydroxide ion concentration of 1.4 x 10-10 M. When you solve for pH, what value do you obtain?

What is the mass percent concentration of a saline solution prepared by dissolving 1.00 mol of Na2SO4 in 1.00 L of water?

what combination will result in a acidic solution? a reaction of strong acid and strong base b reaction of strong acid and weak base c a reaction of weak acid and strong base d reaction of weak acid and weak base

How many moles of sucrose (C12 H12 O11) would be in 7.1 liters of a 0.93 molarity solution of sucrose?

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

For the reaction of carbon with carbon dioxide to make carbon monoxide, one set of conditions produced a Kc = 1.2 * 10-1. At equilibrium at a certain temperature, the concentration of product was 0.60 M.

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.