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Answer:
12
Explanation:
32-20= 12
This is because when the metal is added it adds to the volume of the liquid hence to find the metal itself subtract the final volume from Intel volume
Answer: Nitrogen normally exists as two-atom molecules in the form of a gas at room temperature.
Explanation:
The percent yield : 73.5%
<h3>Further explanation</h3>
Given
Reaction
C+2H₂⇒CH₄
Required
The percent yield
Solution
mol of Carbon(as a limiting reactant) :
mol CH₄ based on C, and from equation mol ratio C : CH₄, so mol CH₄ = 8.3
Mass of Methane(theoretical yield) :
The mass of 0.7891 mol of ferric oxide (Fe2O3) is 125.94 grams
<u><em>calculation</em></u>
mass of Fe2O3 is calculated using moles Fe2O3/ molar mass of Fe2O3 formula
moles of Fe2O3 = 0.7891 moles
molar mass of Fe2O3= (55.8 x2) + (16 x3) =159.6 g/mol
mass is therefore =0.7891 mol x 159.6 g/mol=125.94 grams
