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never [62]
3 years ago
7

How many grams of KCl is produced if 32.4 grams of O2 is produced?

Chemistry
1 answer:
MrRissso [65]3 years ago
8 0
Okay so, the molar mass (Mr) of O2 is 32g

moles = mass/Mr
moleS= 32.4/32= 1.0125mol
the Mr of KCl is 39.1+35.5= 74.6g

the ratio of moles of KCl to O2 is 2 : 3
therefore moles of KCl is (1.0125/3)×2= 0.675mols

mass =moles×Mr=0.675×74.6= 50.355g
rounds up to 50.3g therefore last answer is correct


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<h3>What is the freezing point?</h3>

The temperature at which a liquid solidifies.

Sucrose doesn't show appreciable dissociation in water, so i≈1 in this case. by extension, −7.3°C is the approximate freezing point of this solution.

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