If a side of an open cubical box is 3.25cm, how many liters of air does it contain (Hint: 1 liter = 1000cm3)
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Q3
The following reaction occurs at STP.
2H2O(I)−2H2(g)+O2(g). How many liters of hydrogen gas can be produced by the breakdown of 72 grams of water?
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Q4
In the electrolysis of a $$ CuSO_4 $$ solution, how many grams of Cu are plated out on the cathode in the time that it takes to liberate 5.6 liter of $$ O_2 $$ (g), measured at STP , at the anode ?
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Q5
The combustion of a sample of butane C4H10 produced 2.46 grams of water?
2C4H10 + 13O2 ====== 8CO2 + 10H2O
A-How many moles of water formed?
B-How many moles of butane burned?
C-How many grams of butane burned?
D-How many oxygen was used up in moles? in grams?