This is the chemical formula for diethyl ether: (CH,CH,),O. Calculate the mass percent of carbon in diethyl ether. Round your answer to the nearest percentage.

Which element has the largest mass % in alcohol CH3CH₂OH? (Hint: calculate the "mass" of each atom, C, H, O, in the compound) All three elements are the same! H O

Convert 1.36 x 10-18 grams of X3Z5 into molecules/formula units of the same compound. (Assume that the molar mass of X is 32.36 grams per mole and the molar mass of Z is 56.03 grams per mole.) Assume that Avogadro's number is 6.022 x 1023. Report your answer to three decimal places.

How many atoms of chloride are in 2.38 moles of sodium chloride?  I have the answer as 1.43 x 10^24. But i am so lost on how to get to that answer, i need a step by step solution on how to find it. Thank you :)

One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows that the composition of chrysotile is 26.3% Mg, 20.2% Si, 1.45% H, and the remainder of the mass is oxygen. Determine the empirical formula of chrysotile. ( Type in the formula without spaces or subscripts in the order it appears in the problem. As in Mg1Si2H3O4)

How to i measure the mass oxalate when i only have the potassium ferrioxalate sample of 0.127 g but no grams of oxalate? please help

A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and 0.440 g of hydrogen. A) What is the simplest formula of the compound (Write C first and then H)? You won't be able to make the numbers a subscript. For instance, for MgCl2 enter MgCl2. B) The molar mass of the compound was found to be 42.08 g/mol. What is the molecular formula of the compound? You won't be able to make the numbers a subscript. For instance, for MgCl2 enter MgCl2.

This is the chemical formula for acetone: (CH3) CO. Calculate the mass percent of carbon in acetone. Round your answer to the nearest percentage. 1% X Ś

This is the chemical formula for methyl acetate: (CH3)₂ CO₂. Calculate the mass percent of carbon in methyl acetate. Round your answer to the nearest percentage. %

20) Write the empirical formulas for the following compound: HH -0- A) C,H¿O2 B) CH,0 C) CH,O 21) Write a sentence that describes how to determine the number of moles of a compound in a known mass of the compound if we know its molecular formula. A) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the molar mass of the compound by the mass of compound. B) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound. C) Use the molecular formula to find the molar mass; to obtain the number of moles, multiply the mass of compound with the molar mass of the compound. 22) Compare 1 mole of H, 1 mole of O, and 1 mole of F2. Which has the largest number of molecules? Which has the greatest mass? A) All three have the same number of molecules, since a mole is defined as a specific number of particles. B) O2 has the largest number of molecules. C) H2 has the largest number…