Respuesta :

To answer this question, we need to convert the given number of moles of the compound copper (II) cyanide to grams by multiplying the compound's molar mass. The molar mass of copper (II) cyanide is 115.55 g/mol. Multiply 4 by this number, the answer is 462.2 grams.

Answer: The mass of given amount of copper (II) cyanide is 462.4 g

Explanation:

To calculate the number of moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

We are given:

Moles of copper (II) cyanide = 4 moles

Molar mass of copper (II) cyanide = 115.6 g/mol

Putting values in above equation, we get:

[tex]4mol=\frac{\text{Mass of }Cu(CN)_2}{115.6g/mol}\\\\\text{Mass of }Cu(CN)_2=(4mol\times 115.6g/mol)=462.4g[/tex]

Hence, the mass of given amount of copper (II) cyanide is 462.4 g

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