Chemistry, 08.12.2021 14:00, sansyboy7891

Please help.

Why does the temperature change when a powder is dissolved in water?

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 18:30, minstcordell4115

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Answers: 3

continue

Chemistry, 22.06.2019 12:20, Toni1816

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

Answers: 1

continue

Chemistry, 22.06.2019 17:50, kaylamount

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Answers: 2

continue

Chemistry, 22.06.2019 20:20, Matseleng3775

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.