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madam [21]
2 years ago
15

In the chemical equation 2Mg(s) + O2(g) ? 2MgO(s),

Chemistry
1 answer:
cluponka [151]2 years ago
4 0
The correct answer is D
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A pharmacist wishes to strengthen a mixture from 10%alcohol to 30% alcohol. How much pure alcohol should be added to 7 liters of
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Suppose x is the number of litres added to the 10% mixture than the quantity of new mixture is given as below

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