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HELP HELP IM FAILING PLZ HELP ME

What is the formula mass of calcium nitrate tetrahydrate (Ca (NO3)2 · 4H0]?
Be sure to add the water of hydration, which is the 4H2O part (water surrounding the calcium
nitrate).


102 g/mol
164 g/mol
174 9/mol
236 g/mol

Sagot :

samueladesida43

Answer:

236 g/mol

Explanation:

This question is asking to calculate the molar mass/formula mass of calcium nitrate tetrahydrate with the chemical formula: Ca(NO3)2 · 4H20. This is done as follows:

Atomic mass of the constituent elements are as follows:

Ca = 40

N = 14

O = 16

H = 1

Hence, in Ca(NO3)2 · 4H20.

= 40 + {14 + 16(3)}2 + 4 {1(2) + 16}

= 40 + {14 + 48}2 + 4{2 + 16}

= 40 + {62}2 + 4{18}

= 40 + 124 + 72

= 236

Hence, the molar mass of Ca(NO3)2 · 4H20 is 236g/mol.

Answer:

236 g/mol

Explanation:

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