Which of the following lists characteristics of a lake and NOT a reservoir A. Artificial dam, fresh water B. natural dam, filled
2 answers:
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Answer:
1.
2.
Explanation:
Hello,
1. In this case, since the volume of the rock is obtained via the difference between the volume of the cylinder with the water and the rock and the volume of the cylinder with the water only:
Thus, the density turns out:
2. In this case, given the density and mass of aluminum we can compute its volume as follows:
Moreover, as the volume is also defined in terms of width, height and length:
The height is computed to be:
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Answer:
Theoretical yield = 3.51 g
Explanation:
The formula for the calculation of moles is shown below:
For :-
Mass of = 1.28 g
Molar mass of = 16.04 g/mol
The formula for the calculation of moles is shown below:
Thus,
For :-
Mass of = 10.1 g
Molar mass of = 31.998 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the given reaction:
1 mole of methane gas reacts with 2 moles of oxygen gas
0.0798 mole of methane gas reacts with 2*0.0798 moles of oxygen gas
Moles of oxygen gas = 0.1596 moles
Available moles of oxygen gas = 0.3156 moles
<u>Limiting reagent is the one which is present in small amount. Thus, is limiting reagent.
</u>
The formation of the product is governed by the limiting reagent. So,
1 mole of methane gas on reaction produces 1 mole of carbon dioxide.
0.0798 mole of methane gas on reaction produces 0.0798 mole of carbon dioxide.
Mole of carbon dioxide = 0.0798 mole
Molar mass of carbon dioxide = 44.01 g/mol
The formula for the calculation of moles is shown below:
Thus,
Mass of = 3.51 g
<u> Theoretical yield = 3.51 g</u>