theangelsanchez
22.06.2019 •
Chemistry
21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8
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Ответ:
The correct answer is Option B.
Explanation:
To calculate the number of moles, we use the equation:
....(1)
For :Given mass of nitrogen gas = 10 g
Molar mass of nitrogen gas = 28 g/mol
Putting values in above equation, we get:
The given chemical reaction follows:
As, oxygen gas is present in excess. Thus, it is considered as an excess reagent and nitrogen is considered as a limiting reagent because it limits the formation of products.
By Stoichiometry of the reaction:
1 mole of nitrogen gas produces 2 moles of nitrogen oxide.
So, 0.357 moles of nitrogen gas will produce = of nitrogen oxide.
Now, calculating mass of nitrogen oxide by putting values in equation 1, we get:
Moles of nitrogen oxide = 0.714 mol
Molar mass of nitrogen oxide = 30 g/mol
Putting values in equation 1, we get:
Hence, the correct answer is Option B.
Ответ:
it goes in to your body system and stores more food
Explanation:
it stores more food into the body