Explanation:
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When 24g of magnesium metal is heated in air, 40g of magnesium oxide is produced. What mass of magnesium would be needed in orde
1 answer:
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Answer:
The temperature at which the reaction changes from non-spontaneous to spontaneous is 588.735 K
Explanation:
The spontaneity of a reaction is determined by the change in Gibbs Free Energy, .
If is greater than zero, then a reaction is feasible.
If is less than zero, then a reaction is not feasible.
To determine the temperature at which the reaction changes from non-spontaneous to spontaneous, we should equate the to zero.
We take as the limiting condition.
Therefore, the temperature is: 588.735K
Answer : The chemical formula for the given compound is
Explanation : Given,
If percentage are given then we are taking total mass is 100 grams.
So, the mass of each element is equal to the percentage given.
Mass of = 45.43 g
Mass of = 54.57 g
Molar mass of = 18 g/mole
Molar mass of = 129.9 g/mole
To formulate the chemical formula, we need to follow some steps:
Step 1: Converting the given masses into moles.
Moles of water =
Moles of =
Step 2: Calculating the mole ratio of the given molecule.
For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.4201 moles.
For =
For Carbon =
Step 3: Taking the mole ratio as their subscripts.
The ratio of = 1 : 6
The chemical formula for the given compound is
Hence, the chemical formula for the given compound is