SC-1251
Conservation of mass
Lower Sec Science · Secondary 2 · Hard · Conservation of mass
A student adds 40 g of calcium carbonate to 60 g of hydrochloric acid. After the reaction is complete, 20 g of carbon dioxide gas has escaped. Assuming conservation of mass, what is the total mass of the remaining products in the container?
- 80 g
- 40 g
- 60 g
- 20 g
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