10. A sample weighing 106.7 grams is analyzed and found to contain 42.97 g of potassium,...
A compound is analyzed and found to contain 68.54% carbon, 8.63% hydrogen, and 22.83% oxygen. The molecular weight of this compound is known to be approximately 140 g/mol. What is the empirical formula? What is the molecular formula?
a sample of an unknown compound was analyzed and found to contain 19.97% phosphorus and oxygen. What is the empirical formula of the compound? 4, Calculate the empirical formula for the compound formed when 10.83 g of zinc are heated with sulfur to form 16.16 g of zinc sulfide.
A very flammable compound was analyzed and found to contain 82.63% carbon and 17.38% hydrogen by mass. the molecular mass is 58.14 g/mol. find the empirical formula and molecular formula
A 7.39 g sample of a compound containing C, H, and O is analyzed using combustion analysis. In a separate experiment, the molecular mass of the compound is found to be 300.44 g. The combustion analysis produces 21.63 g CO2 and 6.2 g H2O. A.How many grams of carbon were in the original sample? a)2.45g b)11.8g c)5.9g B.How many grams of hydrogen were in the original sample? a) .69g b).75g c).82g C.How many grams of oxygen were in the sample?...
compound is found to contain 63.65 % nitrogen and 36.35 % oxygen by mass. the empirical formula is? the molar mass is 44.02 g/mol. what is the molecular formula? A compound is found to contain 6.360 % silicon , 36.18 % bromine , and 57.46 % iodine by mass. the empirical formula is? the molar mass is 441.7. what is the molecular formula? A compound is found to contain 64.80 % carbon , 13.62 % hydrogen , and 21.58 %...
Please Help!!!!! A white powder is analyzed and found to contain 43.64% phosphorus and the rest oxygen by mass. The compound has a molecular weight of 283.88 g/mol. What are the compounds empirical and molecular formulas?
20) A compound was analyzed and found to be 47% Carbon, 11% Hydrogen and 42% Oxygen, What is its Empirical Formula? What is its molecular formula if its molecular weight is 304 g/mole?
20) A compound was analyzed and found to be 47% Carbon, 11% Hydrogen and 42% Oxygen, What is its Empirical Formula? What is its molecular formula if its molecular weight is 304 g/mole?
A solid sample (Sample 1) is analyzed and found to contain 1.47 g carbon and 0.123 g hydrogen. A second sample (Sample 2) is expected to be composed of the same pure compound. If Sample 2 is found to contain 2.17 g hydrogen, how much carbon is expected in the sample ?
A sample found on the lab bench is analyzed and found to contain Y, Ba, Cu, and O. The inorganic compound contains 13.34% Y, 41.23% Ba, and 16.81% O. When 0.173 grams of the sample is dissolved in 25 mL of cyclohexane the mixture freezes at 6.28°C. WHAT IS THE MOLECULAR FORMULA FOR THE INORGANIC COMPOUND? f.p. cyclohexane=6.55°C kf (cyclohexane) = 20.2°C/m ?(cyclohexane) = 0.779 g/mL kf (H2O) = 1.858°C/m kb (H2O) = 0.512°C/m