1 answer:
Answer:
balanced;
unbalanced;
unbalanced;
balanced;
Explanation:
CaO + 3C → CaC2 + CO //all elements are balanced
Na + H2O → 2NaOH + H2 //Na is not balanced on the left
4Fe + O2 → 2Fe2O3 //O is not balanced on the left
2Mg + O2 → 2MgO //left is equal to right, balanced
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Explanation:
yea
Answer:
5000kg/m³
Explanation:
density=mass/volume
d=m/v
d=100/20
=5g/cm³
g/cm³*1000=kg/m³
5g/m³*1000=5000kg/m³
Answer:
does your son ever talk to strangers?
Explanation:
