Chemistry, 04.08.2019 07:30 Aestheticblue
Asubstance that cannot be separated physically is called . a.) a pure substance b.) heterogeneous c.) an alloy d.) a mixture
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The atomic number, or number, is the described as the number of in the nucleus of an chemical element.
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Chemistry, 22.06.2019 14:10
Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?
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Chemistry, 22.06.2019 14:30
What state of matter is ice a. liquid b. element c. solid d. gas
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Chemistry, 22.06.2019 20:00
The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.
Answers: 3
Asubstance that cannot be separated physically is called . a.) a pure substance b.) heterogeneous...
Mathematics, 29.02.2020 03:30