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2 years ago

10

D is a green crystalline solid that dissolves in water to give a very pale green solution addition of sodium hydroxide solution

to a solution of D

1 answer:

Ksivusya [100]2 years ago

5 0

Answer:

I think its iron(II) oxide

Explanation:

The substance is black but when it's mixed with water it turns green solution so when mixed with sodium Hydroxide it turns green

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Molarity is..
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2 years ago

ubstance A undergoes a first order reaction A®B with a half-life, t½, of 20 min at 25 °C. If the initial concentration of A in a

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Explanation :

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$k=\frac{0.693}{20\text{ min}}$

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