onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent...
Tetraethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71% C and 6.23% H. What is the empirical formula of tetraethyllead?
Tetraethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71% C and 6.23% H. What is the empirical formula of tetraethyllead?
A coolant widely used an automobiles engines is 38.70% carbon, 9.74% hydrogen, and 51.56% oxygen. It's molar mass is 62.07 g/mol . What is the molecular formula of the compound?
Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 64 produces 0.3599 g H20 and 2.1977 g CO2, what is the molecular formula of this compound? 3. A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH(aq), what is the molar mass of the acid? 4. The amount of calcium in a 15.0-g sample was determined by converting the...
24) In 116.9 g of NaCl, how many particles (or ‘formula units’) of NaCl are present? A: 25) What is the empirical formula for a compound that consists of 0.676 g of Iron and 0.773 g of Sulfur? A: 26) What is the molecular formula for ethylene glycol (antifreeze)? The empirical formula is CH3O and the molar mass is 62.07 g/mol. A:
7 A compound having an approximate molar mass of 165-170g has the following percentage composition by mass: carbon, 42.87%; hydrogen, 3.598%, oxygen, 28.55%, nitrogen 25.00%. Determine the empirical and molecular formulas of the compound. A compound consists of carbon and hydrogen. The molar mass of this compound id 44.1 g/mol The percent by mass of carbon is 81.71%. Determine the empirical and molecular formulas of the compound 8.
A compound with the empirical formula CH, has a molar mass of 70 g/mol. What is the molecular formula for this compound? molecular formula:
A compound with the empirical formula of NaSO₄ and a molar mass of 238 g/mol has a molecular formula of:
Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...