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2 years ago

The basic principle in balancing a chemical equation is to ______. hints

Chemistry

2 answers:

Natalija [7]2 years ago

5 0

Answer: obey the "law of conservation of mass".
_____________________________________

andrezito [222]2 years ago

3 0

Answer is: obey the Law of conservation of mass.

For example, balanced chemical reaction:

Pb(NO₃)₂(aq) + Li₂SO₄(aq) → PbSO₄(s) + 2LiNO₃(aq).

According to principle of mass conservation, number of atoms must be equal on both side of balanced chemical reaction.

There are two lithium atoms, one lead atom, one sulfur atom, ten oxygen atoms and two nitrogen atoms on both side of reaction.

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White phosphorus melts and then vaporizes at high temperatures. The gas effuses at a rate that is 0.404 times that of neon in th

Soloha48 [4]

White phosphorus melts and then vaporizes at high temperatures. The gas effuses at a rate that is 0.404 times that of neon in the same apparatus under the same conditions-There are 4 atoms of P in the molecule

Explanation:

Ar=30,97g/mol

$R_{Px$ / $R_Ne}$ = $\sqrt{Mr(Ne)/Mr(Px)}$ =0,404

0,404= $\sqrt{20,18/30,97*x}$

$0,404^{2}$ =20,18/30,97*x

X=20,18/30,97*0,163

X=4

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