Chemistry, 01.09.2020 07:01 lzjsjdhdgd442
Which of the following are the same and which are different?
a. a substance and a pure substance
b. a heterogeneous mixture and a solution
c. a substance and a mixture
d. a homogeneous mixture and a solution
Answers: 1
Chemistry, 21.06.2019 20:10
Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.
Answers: 2
Chemistry, 23.06.2019 06:30
Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction
Answers: 3
Chemistry, 23.06.2019 12:30
If you reacted 450 g of trimethylgallium with 300 g of arsine, what mass of gaas could you make?
Answers: 1
Which of the following are the same and which are different?
a. a substance and a pure substance
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