SC-1250
Conservation of mass
Lower Sec Science · Secondary 2 · Medium · Conservation of mass
A student adds 15 g of magnesium to 40 g of hydrochloric acid solution in an open beaker. After the reaction, 10 g of magnesium chloride solution remains in the beaker. Using conservation of mass, what is the total mass of gas released?
- 25 g
- 35 g
- 45 g
- 55 g
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