Which is a pure substance?
air
nitrogen
apple juice
tap water...
Chemistry, 02.09.2019 13:20 hannahelisabeth19
Which is a pure substance?
air
nitrogen
apple juice
tap water
Answers: 2
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Find the protons, electrons and neutrons for strontium with a mass of 83
Answers: 1
Chemistry, 22.06.2019 23:30
The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth
Answers: 1
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