4/7/2023 0 Comments Atomic mass of alCalculate the number of C atoms present in 84.5 g of isopropanol (rubbing alcohol), C3H8O?Ĥ16. The atomic masses of carbon, hydrogen, and oxygen are 12.07g, 1.008g and 16.00g respectively. How many moles of chloroform (CHCl3) are there in 210.45 g of chloroform? C = 12.01 amu, H = 1.008 amu and Cl = 35.45 amu.Ĥ15. Calculate the molecular mass of methanol (CH4O), given the atomic masses of C = 12.01 g, H = 1.008 g and O = 16 g.Ĥ14. Given that its molar mass is about 120 g. Which of the following is the molecular formula of peroxyacylnitrate (PAN), one of the components of smog, and is a compound of C, H, N, O, with percent composition by mass: 19.8% C, 2.5% H, 11.6% N. How many water molecules are present in 5.34 mL of water at a temperature of 4oC, which the density of water at this temperature is 1.00 g/mL? Atomic masses of H and O are 1.008 g and 16.00 g respectively.Ĥ12. How many oxygen (O) atoms are there in 2.31 x 10^4 g of urea. Calculate for the number of molecules of ethane (C2H6) present in 0.431 g of C2H6. Calculate the number of atoms present in 4.22 g of zinc (Zn).Ĥ09. Determine the mass in grams of a single atom of Ge which has an atomic mass of 72.59.Ĥ08. Given 16.7 moles of gold (Au), how many grams of Au are there? Atomic mass of Au is 197.0g.Ĥ07. Calculate the number of moles of cobalt (Co) atom in seven billion Co atoms?Ĥ06. How many grams are there in 4.57 x 10^21 amu?Ĥ05. How many number of atoms are there in 1.32 x 10^3 g of Lead (Pb)? Pb atomic mass is 207.7g.Ĥ04. Calculate the moles of Magnesium (Mg) present in 93.5 g of Mg? (Mg atomic mass = 24.31g)Ĥ03. The radius of Na atom is 186 pm and atomic number is 11.Ĥ02. The radius of the nucleus is given, and 3.04 fm. Determine the density of the space occupied by the electrons in the Na atom. SEE: More Questions and Answers in General Chemistry Continue Practice Exam Test Questions Part IX of the SeriesĬhoose the letter of the best answer in each questions.Ĥ01.
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