Question

1. What is the percent by mass if 8.0g copper is added to enough zinc to produce 100g an alloy?​

Answer 1

Explanation:

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Answer 2

Given - Mass of copper - 8 gram

Mass of alloy - 100 gram

Find - Percent by mass

Solution - Percent by mass is calculated by the formula - mass of solute/mass of solution*100.

In the alloy, solute is copper and solvent is zinc.

Calculating percent by mass by keeping the values in mentioned formula.

Percent by mass = 8/100*100

Percent by mass = 8%

Further, calculating mass of solvent.

Mass of solution = mass of solute + mass of solvent

Mass of solvent = mass of solution - mass of solute

Mass of solvent = 100 - 8

Mass of solvent = 92 gram