A 2.00 g sample of unknown hydrocarbon is found to contain 1.50 g carbon and 0.50 g hydrogen. What is the compoun percent composition by mass?

(Correct!) What is the mass of carbon dioxide that contains the same number of atoms as 10.0 g of H₂SO3? 21.5 g 24.2 g 19.8 g 15.7 g 10.7 g (Your correct answer)

Problem A sample of an unknown compound contains 0.21 mol of zinc, 0.14 mol of phosphorus, and 0.56 mol of oxygen. What is the empirical formula?Plan We are given the amount (mol) of each element as fractions. We use these fractional amounts directly in a preliminary formula as subscripts of the element symbols. Then, we convert the fractions to whole numbers.

Help ost comr X AHRQ's Healt X Illinois StateL X Mind Tap - 55750828934189288909969212&elSBN=9781305657... ☆ Q Search this References Use the References to access important values if needed for this question. A compound is found to contain 37.23 % carbon, 7.827 % hydrogen, and 54.94 % chlorine by mass. What is the empirical formula for this compound? To answer the question, enter the elements in the order presented above. Submit Answer

Please help. I have gotten the first answer right please help with the second.

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[References] with the empirical formula CH, was found to have a molar mass of approximately 84 g. What is the molecular formula of the compound? ements in the order: C, H.) ormula: swer Try Another Version 1 item attempt remaining

2. Theoretically, should the experimental mass percent water values for everyone who used the same hydrate be approximately the same value? Why or why not?

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