O STOICHIOMETRY -Finding mass percent from chemical form ulae This is the chemical formula for hexanal:...
STOICHIOMETRY Finding molar mass from chemical formulae The chemical formula for diethyl sulfoxide is: (CH2CH2), so Calculate the molar mass of diethyl sulfoxide. Round your answer to 1 decimal place. I g-mol ! STOICHIOMETRY Finding molar mass from chemical formulae The chemical formula for diethyl sulfoxide is: (CH2CH2), so Calculate the molar mass of diethyl sulfoxide. Round your answer to 1 decimal place. I g-mol !
O STOICHIOMETRY Finding chemical formulae from a mole ratio An unknown compound has the following chemical formula: PbO where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 4.0 mol of oxygen and 3.9 mol of lead. Write the complete chemical formula for the unknown compound. X 5 ?
chemical bonding, equations and stoichiometry
stoichiometry and equations
1. Calculate the mass percent of titanium in the mineral ilmenite, FeTiO3. What mass (in grams) of ilmenite is required if you wish to obtain 750 g of titanium (Ti)? [Fe = 56; Ti = 48; O = 16] (3)
VII O STOICHIOMETRY Percent yield of chemical reactions Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H,O). If 0.332 g of water is produced from the reaction of 1.1 g of hydrochloric acid and 2.1 g of sodium hydroxide, calculate the percent yield of water. Round your answer to 2 significant figures. 0% x 3 ?
stoichiometry
5. Paris green is a highly toxic emerald green compound with the form 1 the formula Cu(C,H,O), 3Cu(ASO),. What is its percent by mass arsenic? 6. A gas that is produced when fruit ripens contains 85.62% C and 14 380 mass. The molecular mass was found to be twice the empirical formula 1 molecular mass. What is the molecular formula of this gas? 7. A hydrocarbon molecule contains twice as many hydrogen atoms as carbon atoms. Its molar mass...
Chemical Conversion (Stoichiometry): Aluminum Scrap to Alum Data mass of aluminum - 0.54g mass of water + filter paper - 42.84g mass of alum product + watch class + filter paper - 43.70g Calculate the mass of your alum produce - this is the actual yield of you synthesis??? Calculate the molar mass of alum [KAl(SO4)2 * 12H2O] - round the result to the nearest 0.1 gram/mol??? Calculate the theoretical yield in grams for this reaction. Assume the aluminum is...
O STOICHIOMETRY Limiting reactants Kalem A v Gaseous ethane (CH,CH) will react with gaseous oxygen (O) to produce gaseous carbon dioxide (CO) and gaseous water (HO). Suppose 11.1 g of ethane is mixed with 22. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to 2 significant digits.
Acetohydrazine is an organic compound with the chemical formula C2H6N2O. Its percent composition by mass is: 8.163% hydrogen 21.60% oxygen 32.43% carbon 37.81% nitrogen How many grams of carbon does a 38.64 g sample of acetohydrazine contain?Be sure to use the correct number of SFs for your answer.
Chromium is most commonly mined in the form of chromite, which has the chemical formula FeCr2O4. Calculate the percent by mass of each element in chromite, and give your answers to four significant digits %Fe= %Cr= %O=
O STOICHIOMETRY Solving moles-to-moles limiting reactant problems - Hydrogen (H2) gas and oxygen (O2) gas react to form water (H20) vapor. Suppose you have 3.0 mol of H, and 7.0 mol of o, in a reactor. Calculate the largest amount of H,O that could be produced. Round your answer to the nearest 0.1 mol. Il mol x 5 ?