Question

what is the percent by mass if 8.0g copper is added to enough zinc to produce 100g an alloy​

Answer 1

Answer:

8%

explanition

100g 1% is 1 gram and we have 8 so 8% that is my answer hoe you will like it

Answer 2

Given,

The mass of copper in grams$\[ = 8\]$

The mass of alloy in grams$\[ = 100\]$

Solution,

Therefore, the required percentage is

$\[\begin{array}{l} = \frac{{100 - 8}}{{100}} \times 100\\ = \frac{{92}}{{100}} \times 100\\ = 92\% \end{array}\]$

Hence, the required percentage is$\[92\% .\]$