We determine the limiting reactant by using the moles present in the equation and the actual moles.
According to equation, ratio of Fe₂O₃ : Al = 1 : 2
Actual moles of Fe₂O₃ = 187.3 / (56 x 2 + 16 x 3)
= 1.17
Actual moles of Al = 94.51 / 27
= 3.5
Fe₂O₃ is limiting. Fe₂O₃ required:
(moles Al)/2 = 3.5/2 = 1.75
Moles to be added = 1.75 - 1.17
= 0.58
Mass to be added = moles x Mr
= 0.58 x (56 x 2 + 16 x 3)
= 92.8 grams
Answer:
The molar mass of the gas should be 43.0 g/mol.
Explanation:
1.Use the ideal gas law() & the formula for moles and molar mass().
2.Insert the equation into and re-arrange to solve for M(molar mass).
3.Insert values and use the gas constant R = since the volume is in liters and the pressure is in atmosphere units.
4. Your answer should be 42.99 g/mol or 43.0 g/mol.
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The first law of thermodynamics states the conversation of energy and heat where the energy in an isolated system may be transformed into another, but never created or destroyed. If 314J of energy was released to the room, then also 314J of energy was removed from food in that refrigerator assuming it is an isolated system
Answer:
The quantities of electrical charge that are they can produce are the same
Explanation:
The quantity of electrical charge produced by an electrochemical cell is given by
Number of moles of electrons × Faraday's constant.
since the number of moles of electrons involved in the two electrochemical reactions are the same (2 moles of electrons each) then the charge that they can produce will also be the same.
Hence the answer.