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lubasha [3.4K]
2 years ago
14

30 Pointss Please make sure it is correct please

Chemistry
1 answer:
Vsevolod [243]2 years ago
6 0

Answer:

Option C is correct.

Explanation:

The graph shows birth and death rate in Japan. Birth rate has declined with the passage of time, as shown in the form of blue line whereas death rate is nearly constant, which can be seen as red line. More precisely, birth rate has decreased from ~30 to 10 whereas death rate is nearly ~10 all the times, although it was slightly decreased in the middle. Therefore, option C is the correct option...

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Write the formula and determine the percent by mass of the salt in barium hydroxide octahydrate *
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2C2H2(g)+5O2(g)=4CO2(g)+2H2O(g)
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The volume of ethyne, C₂H₂ required to produce 12 moles of CO₂ assuming the reaction is at STP is 134.4 L

<h3>Balanced equation</h3>

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From the balanced equation above,

4 moles of CO₂ were produced by 2 moles of C₂H₂

<h3>How to determine the mole of C₂H₂ needed to produce 12 moles of CO₂</h3>

From the balanced equation above,

4 moles of CO₂ were produced by 2 moles of C₂H₂

Therefore,

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<h3>How to determine the volume (in L) of C₂H₂ needed at STP</h3>

At standard temperature and pressure (STP),

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6 moles of C₂H₂ = 6 × 22.4

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Learn more about stoichiometry:

brainly.com/question/14735801

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6 0
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