Thank you for visiting A balloon is filled with 36 6 liters of helium gas What is the mass of the helium at STP grams He 1 mole 22. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
Final answer:
To find the mass of helium at STP, divide the given volume of helium gas by the molar volume of gas at STP, then multiply by the molar mass of helium gas.
Explanation:
To find the mass of helium at STP, we need to convert the given volume of helium gas to moles using the molar volume of gas at STP. The molar volume of a gas at STP is 22.4 L/mol. First, convert 36.6 liters to moles by dividing the volume by the molar volume:
- 36.6 L ÷ 22.4 L/mol = 1.63 moles
Next, we can use the molar mass of helium to convert moles to grams. The molar mass of helium is approximately 4 g/mol. Multiply the number of moles by the molar mass:
- 1.63 moles × 4 g/mol = 6.52 grams
Therefore, the mass of helium at STP is 6.52 grams (rounded to three significant figures).
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