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AlexFokin [52]
4 years ago
15

A student adds 4.00g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry

ice sublimes (converts to gaseous CO2)
Chemistry
1 answer:
kondaur [170]4 years ago
5 0

Answer : The volume of the balloon at STP is, 2.04 L

Explanation :

First we have to calculate the moles of dry ice.

\text{Moles of dry ice}=\frac{\text{Mass of dry ice}}{\text{Molar mass of dry ice}}

Molar mass of dry ice (CO_2) = 44 g/mol

\text{Moles of dry ice}=\frac{4.00g}{44g/mol}=0.0909mol

Now we have to calculate the volume of dry ice.

As we know that 1 mole of substance contains 22.4 L volume of gas.

As, 1 mole of dry ice contains 22.4 L volume of gas.

So, 0.0909 mole of dry ice contains 0.0909 × 22.4 L = 2.04 L volume of gas.

Thus, the volume of the balloon at STP is, 2.04 L

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According to the stoichiometry the CO2 formed is 1/2 the moles of H2O. So take the moles of CO2 as 5moles.

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the specific heat of the metallic element rhodium is 0.240 j/g-k at 25°c. if 586 j of heat is added to an 80.0 g block of rhodiu
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The expected final temperature of the block, given that 586 J of heat were added to it is 55.5 °C

<h3>How to determine the final temeprature</h3>

We'll begin by obtaining the change in the temperature of the block. This can be obtained as follow:

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Divide both sides by MC

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Finally, we shall determine the final temperature of the block. This can be obtained as follow:

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ΔT = T₂ – T₁

30.5 = T₂ – 25

Collect like terms

T₂ = 30.5 + 25

T₂ = 55.5 °C

Thus, from the calculation made above, we can conclude that the final temperature is 55.5 °C

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