Question

A rock has a mass of 12000 g. It contains 300.0 grams of gold. What is the mass percent of gold in the rock? 25.00% 4.000% 2.500% 100.0%

Answer 1

The mass percent of gold in the rock is 2.500 %

Step-by-step explanation:

Step 1: Data given

Mass of the rock = 12000 grams

Mass of gold = 300.0 grams

Step 2: Calculate mass %

Mass % = mass of gold / mass of gold

Mass % = (300.0 grams / 12000 grams) * 100 %

Mass % = 2.500 %

The mass percent of gold in the rock is 2.500 %