Sulfur (S) and fluorine (F) form many different compounds. SF6 contains 3.55 g of F for every gram of S. What is the formula of compound Y that contains 2.37 g of F for every gram of S?   Question 1 options:   SF9   SF4   SF5

Nitric acid is composed of HNO3 molecules. A sample weighing 4.50 g contains 4.30 1022 HNO3 molecules. How many nitrogen atoms are in this sample? How many oxygen atoms are in 61.0 g of nitric acid?

A binary compound between an unknown element E and hydrogen contains 91.27% E and 8.73% H by mass. If the formula of the compound is E3H8, calculate the atomic mass of E.

A compound called MMT was once used to boost the octane rating of gasoline. What is the empirical formula of MMT if it is 49.5% C, 3.2% H, 22.0% O, and 25.2% Mn?

An unknown compound contains only carbon, hydrogen, and oxygen ( CxHyOz ). Combustion of 5.50 g of this compound produced 8.07 g of carbon dioxide and 3.30 g of water. If 5.50 g of the unknown compound contained 0.183 mol of C and 0.367 mol of H , how many moles of oxygen, O , were in the sample?

A sample of C3H8C3H8 has 8.96×1024 H8.96×1024 H atoms. How many carbon atoms does the sample contain?

Carvone (C10H14O) is the main component of spearmint oil. It has a pleasant aroma and mint flavor. Carvone is added to chewing gum, liqueurs, soaps, and perfume. If you had 55.4 g of carvone, how many carbon atoms do you have?

4. A hydrocarbon has the following centesimal composition: 17.24% hydrogen and 82.74% carbon. The molecular mass of the compound is 58g/mol. The atomic masses: H=1; C=12.What are the empirical and true formulas of this compound? A) CH yC2H5 B) C2H5 and C8H16 C) C2H5 and C4H10 D) C4H10 C8H20 E) None of the above

Ascorbic acid (vitamin C) contains C, H, and O. In one combustion analysis, 5.24 g of ascorbic acid yields 7.86 g CO2 and 2.14 g H,0. Calculate the empirical formula and molecular formula of ascorbic acid given that its molar mass is about 176 g/mol. Add subscripts to complete the formulas. Empirical formula: CHO : Molecular formula: CHO :

Fulminating silver is the historic name for compounds that contain silver and which explode ("fulminate") easily. One example of a fulminating silver compound is made of 1 mole of silver for every 3 moles of nitrogen. If I have 192.3 g of this compound, how many grams of nitrogen do I have? 2.jpg Open file 3.jpg 5.jpg Open file 4.jpg Open file Орen file a 耳 99+ bp