How many nitrate ions are in 387.4 grams of calcium nitrate?

60.6 g

Explanation:

The balanced equation for the given reaction is:

It is a grams to grams conversion problem. Here, first of all the given grams of calcium nitrate are converted to moles on diving by its molar mass. Then it is multiplied by the mol ratio to get the moles of calcium phosphate and finally multiplied by molar mass of calcium phosphate to get its grams.

From balanced equation, there is 3:1 mol ratio between calcium nitrate and calcium phosphate.

Molar mass of calcium nitrate is 164.088 g per mol and the molar mass of calcium phosphate is 310.18 g per mol.

= So, the mass of calcium phosphate the reaction can produce is 60.6 g.

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