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brandonshaw16
03.09.2019 •
Chemistry
Joseph priestley is credited with the discovery of oxygen. he pro- duced o2 by heating mercury(ii) oxide, hgo, to decompose it into its elements. how many moles of oxygen could priestley have pro- duced if he had decomposed 517.84 g of mercury oxide?
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Ответ:
1.2 moles
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
According to stoichiometry:
2 moles of
gives 1 mole of ![O_2](/tpl/images/0221/7969/f1c02.png)
Thus 2.4 moles of
will give=
of ![O_2](/tpl/images/0221/7969/f1c02.png)
Thus 1.2 moles of oxygen are produced.
Ответ:
Explanation:
The density of a substance can be found by using the formula
From the question we have
We have the final answer as
0.17 g/LHope this helps you