Sterling silver contains silver and copper metals. If a sterling silver chain contains 33.3 g of silver and 2.70 g of copper, wh
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<u>Answer:</u> The amount of carbon dioxide gas produced in the reaction is 83.6 grams
<u>Explanation:</u>
As, some amount of oxygen gas is left after the reaction is completed. So, it is present in excess and is considered as an excess reagent.
Thus, carbon is considered as a limiting reagent because it limits the formation of product.
To calculate the number of moles, we use the equation:
.....(1)
Given mass of carbon = 22.8 g
Molar mass of carbon = 12 g/mol
Putting values in equation 1, we get:
The chemical equation for the reaction of carbon and oxygen gas follows:
By Stoichiometry of the reaction:
1 mole of carbon produces 1 mole of carbon dioxide gas
So, 1.9 moles of carbon will produce = of carbon dioxide gas
Now, calculating the mass of carbon dioxide from equation 1, we get:
Molar mass of carbon dioxide = 44 g/mol
Moles of carbon dioxide = 1.9 moles
Putting values in equation 1, we get:
Hence, the amount of carbon dioxide gas produced in the reaction is 83.6 grams
Answer: The empirical formula for the given compound is
Explanation : Given,
Percentage of H = 18 %
Percentage of N = 82 %
Let the mass of compound be 100 g. So, percentages given are taken as mass.
Mass of H = 18 g
Mass of N = 82 g
To formulate the empirical formula, we need to follow some steps:
Step 1: Converting the given masses into moles.
Moles of Hydrogen =
Moles of Nitrogen =
Step 2: Calculating the mole ratio of the given elements.
For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.8 moles.
For Hydrogen =
For Nitrogen =
Step 3: Taking the mole ratio as their subscripts.
The ratio of H : N = 3 : 1
Hence, the empirical formula for the given compound is