Chemistry, 21.07.2019 12:30 hjeffrey168
When a piece of steel wool is burned it gains mass. which explanation is consistent with the law of conservation of mass? a) matter was created during the chemical reaction. b) heat changed into matter. c) a chemical change did not take place. d) matter from the air combined with the steel wool.
Answers: 2
Chemistry, 21.06.2019 23:00
Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom
Answers: 1
Chemistry, 23.06.2019 03:00
Asample of sea water contains 6.28g of sodium chloride per litre of solution. how many milligrams of sodium chloride would be contained in 15.0ml of this solution?
Answers: 3
When a piece of steel wool is burned it gains mass. which explanation is consistent with the law of...
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