Question

How would the Will too small, or not affected? Explain your answer a. b. In Step 12 the ketone caught on fire and the filter paper was scorched In Step 9 not enough magnesium was added to result in bubbles of H, c. 2. The % by weight of Cu in a salt with one Cu atom per formula unit is 33.9%. Calculate the formula weight

Answer 1

Answer:

The formula weight of the salt is 187.46 g/mol.

Explanation:

Let the formula weight of the salt = M

Number of copper atom per formula unit = 1

Atomic mass of copper = 63.55 g/mol

Percentage of copper in single formula unit = 33.9%

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass or formula weight of compound}}\times 100$

$33.9\%=\frac{1\times 63.55 g/mol}{M}\times 100$

$M=\frac{1\times 63.55 g/mol}{33.9}\times 100$

M =187.46 g/mol

The formula weight of the salt is 187.46 g/mol.