2 years ago

A block of magnesium has a mass of 14.3 g and a volume of 8.46 cm3. What is the density of

Chemistry

1 answer:

sveta [45]2 years ago

7 0

Density is mass over volume, so:
14.3/8.46≈ 1.6903 g/cm^3

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$m_{Na_2CO_3}^{theoretical}=6.636gNa_2CO_3$

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In this case, since the decomposition of sodium hydrogen carbonate is:

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$m_{Na_2CO_3}^{theoretical}=10.52gNaHCO_3*\frac{1molNaHCO_3}{84.01gNaHCO_3}*\frac{1molNa_2CO_3}{2molNaHCO_3} *\frac{105.99gNa_2CO_3}{1molNa_2CO_3}\\\\ m_{Na_2CO_3}^{theoretical}=6.636gNa_2CO_3$