Chemistry, 29.01.2020 00:52 kylebenson
Which of these substances are compounds? how do you know?
a. salt (nacl)
b. nitrogen (n)
c. helium (he)
d. water (h2o)
Answers: 2
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Which of these substances are compounds? how do you know?
a. salt (nacl)
b. nitrogen (...
a. salt (nacl)
b. nitrogen (...
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