Answered

The molar mass of SiO2 is 60.09 g/mole.
If a particular grain of sand has a mass of 0.00415 grams, how many moles of SiO2 does it contain?
Drag the values to the correct location to show the dimensional analysis to convert the given to the goal
using correct known conversion facts.
60.09 grams # 6.90 x 10-5 moles ## 0.249 moles
1 mole # 0.00415 grams



Answer :

GinnyAnswer
To find the number of moles of SiO2 in the given mass of the sand grain (0.00415 grams), you can use the molar mass of SiO2 (60.09 g/mole) in a dimensional analysis. Here's the correct setup for the conversion: - Start with the given mass of the sand grain: 0.00415 grams - Set up a conversion factor using the molar mass of SiO2: 1 mole / 60.09 grams - Calculate the number of moles of SiO2: 0.00415 grams * (1 mole / 60.09 grams) = 6.90 x 10^-5 moles Therefore, the sand grain contains approximately 6.90 x 10^-5 moles of SiO2.

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