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Chemistry, 31.07.2020 22:01, nickthequick
Which pure substance can be classified as an element?
h2
NO3
O Nacl
H2SO4
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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Do you know the correct answer?
Which pure substance can be classified as an element?
h2
NO3
O Nacl
H2SO4...
h2
NO3
O Nacl
H2SO4...
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