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Question

determine the volume in liters of 42.34 grams of neon gas at STP

Answer 1

Step 1) Convert g of Ne to moles using its MW

42.34 g Ne x (1 mol Ne / 20.18 g Ne) = 2.098 mol Ne

Step 2) At STP, 1 mol of a gas will occupy a volume of 22.4 L. Use this ratio to calculate the volume occupied by 2.098 mol of Ne.

2.098 mol Ne x (22.4 L / 1 mol Ne) = 47.00 L