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Vsevolod [243]
3 years ago
7

PLEASE HELP ME (JOULES)

Chemistry
1 answer:
Svetllana [295]3 years ago
8 0

Answer:

The answer is not 9.9 i used that and got it wrong

Explanation:

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I THINK this is the answer: 4809.35999999786. (found it on a website)

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What type of solid is formed when a bond occurs between magnesium and oxygen?
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Answer:

3) Ionic

Explanation:

The solid formed when a bond occurs between magnesium and oxygen is an ionic bond. This bond type occurs between a metal and non-metal.

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64g of sulfur dioxide (SO2) contains 32g of oxygen. Calculate how much sulfur it contains?
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Sodium peroxide (Na2O2) is used to remove carbon dioxide from (and add oxygen to) the air supply in spacecrafts. It works by rea
bazaltina [42]

 The volume  (in liters)  of CO₂  that can  be consumed at STP by 435 g Na₂O₂  is  125 L of Co₂

<u><em>calculation</em></u>

2Na₂O₂(s)  +2 CO₂ (g)→  2 Na₂CO₃(s)  + O₂(g)

Step 1 : find the moles  of Na₂O₂

moles = mass÷  molar mass

from periodic table the  molar mass  of Na₂O₂ = (23 x2) +( 16 x2) = 78 g/mol

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Step 2: use the mole ratio to determine the moles of CO₂

from given equation  Na₂O₂ : CO₂ =2 :2 =1:1

Therefore the  moles of CO₂  is also = 5.58 moles

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that is at STP      1  mole of a gas = 22.4 L

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<em>by cross multiplication</em>

= (5.58 moles x 22.4 L) / 1 mole = 125 L

 

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