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Delicious77 [7]
2 years ago
12

Cho biết X, Y (ZX < ZY) là hai nguyên tố mà lớp vỏ nguyên tử có electron cuối cùng điền vào phân lớp 4s.

Chemistry
1 answer:
deff fn [24]2 years ago
4 0
Can you please translate it to english?
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0.480 g of H₂ are produced, in the reaction.

Explanation:

This is the reaction:

Zn(s)  +  2HCl → ZnCl₂ (aq) +  H₂ (g)

We havethe mass of both reactants, so we must work with them to find out the limiting reactant and then, determine the amount of H₂ produced.

Let's convert the mass to moles ( mass / molar mass)

25 g / 65.41 g/mol = 0.382 moles Zn

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Ratio is 1:2, so 1 mol of Zn react with the double of moles of HCl.

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Ratio is 2:1, so If i take account the moles I have, I will produce the half of moles of my product.

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To find out the mass, we must multiply mol . molar mass

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