What number should be written in front of Na to balance the equation? Na + MgCl2 → NaCl + Mg
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Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?