Chemistry, 17.01.2020 08:31 princessa15266
Which of these statements is correct about how the first forms of life appeared on earth?
a. non-living molecules evolved into living molecules by chemical changes.
b. reproducing molecules evolved into living organisms by biological processes.
c. rocks and fossils were transformed into living molecules by biological processes.
d. atmospheric gases were transformed into living organisms by chemical changes.
Answers: 3
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Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning
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Which of these statements is correct about how the first forms of life appeared on earth?
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