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2 years ago

11

How do I balance this chemical reaction ?

2 answers:

Assoli18 [71]2 years ago

8 0

Ignore my writing answer is in pictute

Neko [114]2 years ago

5 0

As + NaOH --------- Na3AsO3 +H2

This is how i do it.

original equation :
As - 1 As -1
Na - 1 Na - 3
O - 1 O- 3
H - 1 H -2 As we can see they are obviously not balanced. so we have to manipulate it so it can equal.

new balanced equation:

2As + 6NaOH ------>>> 2Na3AsO3 + 3H2

As - 1(2) = 2 As - 1(2) = 2
Na - 1(6) = 6 Na - 3(2) = 6
O -1(6) = 6 O - 3(2) = 6
H - 1(6) = 6 H - 2(3) = 6 As we can see, both sides are balanced

I hope this makes sense :)

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Answer:

<u>0.6826 (68.26%)</u>

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z = [ 22.6 - 20 ] / 2.6 = 1.00

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<u>2) Probability</u>

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3 years ago

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3 years ago

Read 2 more answers

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san4es73 [151]

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Explanation : Given,

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Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

$\text{Molarity}=\frac{\text{Moles of }H_2SO_4}{\text{Volume of solution (in L)}}$

Now put all the given values in this formula, we get:

$8.500M=\frac{\text{Moles of }H_2SO_4}{0.250L}$

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Therefore, the moles of $H_2SO_4$ are, 2.125 mole.

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2 years ago

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Ahat [919]

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3 years ago