What is the mass percent of of 0.389g of silicon that reacts with oxygen to form 0.832g silicon dioxide

2) if 10.00 g of iron metal is reacted with 14.5 g of Cla gas, how many grams of ferric chloride (FeCI) will form? 4) ) In general what are some reasons for obtaining a percent yield of less than 100%

Measurements show that unknown compound X has the following composition: element mass % carbon 62.6% hydrogen 4.20% |охудen 33.4% Write the empirical chemical formula of X. ?

A compound of found to contain 37.47% carbon, 12.61% hydrogen, and 49.92% oxygen by mass. What is the empirical formula for this compound? Enter element is order listed above

how many grams of nitrogen are required to form 545g of ammonia

The molar masses of sulfur and oxygen are 32 grams per mole and 16 grams per mole respectively: The % sulfur in sulfur dioxide is

Given the reaction has a percent yield of 88.8%, what is the mass in grams of aluminum iodide that would be required to yield an actual amount of 87.25 grams of aluminum?

A compound of mass 0.496g consisted of only C,H and O. It was completely burned in oxygen,producing 1.56g of CO2 and 0.638g of H2O. a) calcualte the number of moles of carbon dioxide formed b) calculate the number of moles of water formed c) what is the empirical formula of the substance?

What is the percent composition by mass (to one decimal place) of Oxygen and hydrogen in 1 mol of water?

How many molecules exist in 2.30 mol of H2O?