A material was cooled from 100°C to 40°C. What is the temperature change?

A - 40°C

B 60°C

C 40°C

D - 60°C

The table compares the type of reactants and products taking part in two chemical changes. Chemical Change Comparison Chemical Reaction Reactants Products X an element and a compound a compound Y an element and another element a compound Which of

In the world of chemisty, a 'mole is a number of something ... a very lary large number of something. just as a dozen is 12 of something, a mole is about 6.02 * 10^23 of something.

Solutes and solvents can be in forms of

What medal is liquid at room temperature?

How can a redox reaction be used as a source of electrical energy? A. Two half-reactions must be physically separated. B. Two half-reactions must involve more than one electron. C. One half-reaction must use a metal wire electrode. D.

How many protons and electrons in Arsenic ion

What happens to the volume as the mass increases

How many grams of oxygen are formed when 8.20 moles of KOH are formed? 4 KO (s) + 2 H2O (l) → 4 KOH (s) + O2 (g)

It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution.