Question

7. While verifying the law of conservation of mass Smith added 3.5g of magnesium
metal into 14 g of hydrochloric acid. The mass of magnesium chloride formed is
13.8g, what is the mass of hydrogen gas eliminated, if the law of conservation of mass
is true?​

Answer 1

Answer:

ACCORDING TO THE CONSERVATION OF MASS THEORY

NOTHING NEW IS CREATED NOTHING IS DESTROYED THE OVERALL MASS REMAINS SAME

LET HYDROGEN GAS ELIMINATED BE X'

3.5g + 14g = X' + 13.8g

17.5g = X' + 13.8g

X' = 17.5g - 13.8g

X' = 3.7g

So the amount of hydrogen gas eliminated is 3.7g

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