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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.

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

Romashka [77]

The balanced reaction is
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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.

Tcecarenko [31]

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:

P= 3.00 atm

V= ?

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R= $0.082057338 \;L \;atm \;K^{-1}mol^{-1}$

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Putting value in the given equation:

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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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