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Ivahew [28]
3 years ago
6

**PLEASE HELP WITH SCIENCE**

Chemistry
1 answer:
fgiga [73]3 years ago
5 0

it has an electrons in a fixed path together on energy levels.

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2074 Set B Q.No. 1 What mass of nitrogen will be requires
timurjin [86]

140 g of nitrogen (N₂)

Explanation:

We have the following chemical equation:

N₂ + 3 H₂ -- > 2 NH₃

Now, to find the number of moles of ammonia we use the Avogadro's number:

if        1 mole of ammonia contains 6.022 × 10²³ molecules

then   X moles of ammonia contains 6.022 × 10²⁴ molecules

X = (1 × 6.022 × 10²⁴) / 6.022 × 10²³

X = 10 moles of ammonia

Taking in account the chemical reaction we devise the following reasoning:

If        1 mole of nitrogen produces 2 moles of ammonia

then  Y moles of nitrogen produces 10 moles of ammonia

Y = (1 × 10) / 2

Y = 5 moles of nitrogen

number of moles = mass / molecular weight

mass = number of moles × molecular weight

mass of nitrogen (N₂) = 5 × 28 = 140 g

Learn more about:

Avogadro's number

brainly.com/question/13772315

#learnwithBrainly

7 0
3 years ago
I don't know which one it is!
ch4aika [34]
It's what you put :) 
ΔH is the distance from the reactants (which would be E), to the products (which would be G or D)
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Acid base neutralization reactions (e.g.titrations can be considered to go to completely to the right (to products.
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Answer:

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