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lakkis [162]
3 years ago
9

(9) A penny contains 22,452,000,000,000,000,000,000 zinc atoms and also contains

Chemistry
1 answer:
KiRa [710]3 years ago
7 0

Answer:

a

Explanation:

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It is necessary to have a 40% antifreeze solution in the radiator of a certain car. the radiator now has 70 liters of 20% soluti
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The answer is : 17.5 liters drained and replaced by 17.5 liters of 100% solution. 
x = amount drained and replaced
(70-x) = remaining amount of 20% solution
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3 years ago
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The balanced equation for the neutralisation reaction is as follows
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number of H₃PO₄ moles reacted - 0.24 mol
if 2 mol of H₃PO₄ form 6 mol of H₂O
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