Answer:
The mass of silicon in 329 g of quartz is 153.73 g. This can be calculated using the formula n = (m × c) / 100, where n is the number of grams of the element present, m is the mass in grams of the compound and c is the percent of the element in the compound. Thus, we can plug in 329 as the mass of the compound, and 46.7 as the percent of silicon in the compound, to get a result of 153.73 g of silicon in 329 g of quartz.