Which sample is a pure substance
a. a test tub of zinc oxide
b. a container of zinc and oxyg...
Chemistry, 30.11.2020 08:10, Mrcastaway3036
Which sample is a pure substance
a. a test tub of zinc oxide
b. a container of zinc and oxygen
c. A flask of Pondwater
d. A jar of soil
Answers: 1
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Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains
Answers: 2
Chemistry, 22.06.2019 19:40, trodgers0202
Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests. which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory
Answers: 3
Chemistry, 22.06.2019 21:40, fatherbamboo
A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
Answers: 3
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