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Part 1: Calculate the number of moles of CO2 whose mass is 7.08 g. 0.161 mol...
The density of air at 776.0 torr and 24.0°C is 1.216 g/L. Part 1: Calculate the average molar mass of air. 29.05 g/mol Part 2 out of 2 From this value, and assuming that air contains only molecular nitrogen and molecular oxygen gases, calculate the mass percent of N, and of Oz in air. N2 % Re 02 % 3 attempts left Check my work Next part Gu
2 attempts left Check my work At 82.7°C and 799 torr, calculate the number of moles and mass of 4.42 L of CH, gas. mol
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If a cylinder contains 15.6 g of CO2 in 13.5 L at 455 K, what is the pressure? atm 10 2 attempts left Check my work Enter your answer in the provided box. 0.25 points Determine the pressure of N2 (in atm) under the following conditions. 0.26 mol at 23°C in 23.4 L eBook atm Print Be sure to answer all parts. A sample of natural gas at 650 mm Hg contains 79%...
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31. Calculate the number of moles and the mass of gas in 3.40 L of He at STP. A. 0.152 mol 0.608 g B. 76.2 mol. 305 g C. 0.152 mol, 0.0379 g D. 76.2 mol. 19.0 g E. 1.00 mol, 4.00 g 32. Calculate the number of moles in 95.0 g of O., and the volume that it would occupy at 80.0°C and 3.50 atm A 11.9 mol, 266 L B. 5.94 mol, 11.1 L C....
3. Using the mass of NaHCO3, calculate the number of moles of NaHCO3. PART A: REACTION STOICHIOMETRY Thala Tablet 1 Tablet 2 Average Data 20.2g 1,99 a 194.919 187.31 g Mass of NaHCO, Mass of Beaker + Acetic Acid + NaHCO, +Watch Glass before Reaction Mass of Beaker + Reaction Mixture + Watch Glass after Reaction Calculated Results (see below for guidance) Mass of CO2 Gas Released 1:02 g Moles of CO2 Gas Released 0.6231 Ymol 0.02227 mol Moles of...
Calculate the number of moles of CO2(g) produced when 0.250 mol CH4() is burned in the presence of 0.400 mol O2(g). CHA(a) + 2 O2(g) - CO2a) + 2 H2O(g) 0.500 mol CO2 0.200 mol CO2 0.125 mol CO2 0.400 mol CO2 0.250 mol CO2
7. value 0.00 points 3 attempts left Check my work Calculate the number of mol corresponding to 19.0 g Be. Enter your answer in the provided box. mol Be value 1.00 points 3 attempts left Check my work Calculate the number of mol corresponding to 0.065 kg Si. Enter your answer in the provided box. mol Si 9. value 0.00 points 3 attempts left Check my work What is the average molar mass of the following elements? Be sure to...
polnis 3 attempts left Check my work Calculate the mass in g of 0.280 mol of NH3. Enter your answer in the provided box g NH3
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Calculate the volume of CO2(g) formed at STP when 75.0 g of Cacos(s) reacts with 125 mL of 8.00 M HCl(aq). Mol Mass CaCO3 = 100. g/mol. STP = exactly OC and 1 atm pressure (Hint: Is the equation balanced?) HCl(aq) + CaCO3(s) - CaCl(aq) + CO2(g) + H20(1) n= mass/mol mass; MV = n;
Calculate the number of moles of CO2(a) produced when 0.250 mol CH2(g) is burned in the presence of 0.400 mol O2@). CH4(9) + 2 O2(g) + CO2(g) + 2 H2O(g)