Explanation:
Are there any values given in the question?
Answer:
state of matter
Explanation:
Because there are three state of matter namely:liquid,solid and gas and oxygen is a gas.
Answer:
Ca^+2
Explanation:
Hence, the correct option is A.
<em>m Na₂CO₃: 23g×2 + 12g + 16g×3 = 106 g/mol</em>
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1 mol ------- 106g
X ------------ 10,6g
X = 10,6/106
<u>X = 0,1 mol Na₂CO₃</u>
Http://www.chem4kids.com/files/elem_pertable.html this should help.