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Helen [10]
3 years ago
12

Shiloh wanted to observe the changes that occurred during an exothermic reaction. He monitored the changes and placed them in a

chart.
Chemistry
1 answer:
Nostrana [21]3 years ago
7 0
<span>The activation energy was reached was 10:45 a.m. The additional energy did not affect the reaction.</span>
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Calculate the grams of sodium hydroxide formed when 2.24 moles of sodium oxide react with water
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If 2.24 moles of sodium oxide react, that means 4.48 moles of NaOH is formed as it is a 1 to 2 stoichiometric relationship.

Now we multiply by the molar mass to get grams.

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How many mL will a 0.205 mole sample of He occupy at 3.00 atm and 200 K? Report your answer to the nearest mL.
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1.1214 mL will a 0.205-mole sample of He occupy at 3.00 atm and 200 K.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Using equation PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

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V= \frac{0.205 \;mole\;0.082057338 \;L \;atm \;K^{-1}mol^{-1} X 200}{3 \;atm}

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Learn more about the ideal gas here:

brainly.com/question/27691721

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