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3 attempts left Check my work Check my work Enter your answer in the provided box. At 31°C a sample of ammonia gas exerts a pressure of 4.70 atm. What is the pressure when the volume of the gas is reduced to one-tenth (0.10) of the original value at the same temperature? atm
Saved 3 attempts left Check my work Enter your answer in the provided box. When 161.0 mL of water at 26.0°C is mixed with 91.0 mL of water at 85.0°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.) PC < Prex Nexo 7 of 14 W
lue 00 points 3 attempts left Check my work A sample of helium gas has a volume of 1.40 L at 169 K and 5.00 atm. When the gas is compressed to 0.428 L at 50.0 atm, the temperature increases markedly. What is the final temperature? Enter your answer in the provided box.
Saved 3 attempts left Check my work Enter your answer in the provided box. When 23.4 mL of 0.500 M H2SO4 is added to 23.4 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17ºC. Calculate AH of this reaction. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water.) (d for water =...
3 attempts left Check my work Enter your answer in the provided box. Determine the pressure of N, (in atm) under the following conditions. 32.0 g at 13.3°C in 5.00 L L atm
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...
W-assignment Saved 6 attempts left Check my work How many g of solute are needed to prepare the following solution? 1.50 x 102 g of 2.00% (m/m) Na2CO3 Enter your answer in the provided box. g Na,Co;
KQuestion 3 (of 12) 3. value: 10.00 points 3 attempts left Check my work Enter your answer in the provided box. At 46°C a sample of ammonia gas exerts a pressure of 3.01 atm. What is the pressure when the volume of the gas is reduced to one-fifth of the original value at the same temperature? atm eBook & Resources References
Saved 3 attempts left Check my work Enter your answer in the provided box, Liquid methanol (CH3OH) can be used as an alternative fuel in pickup and SUV engines. An industrial method for preparing it uses the catalytic hydrogenation of carbon monoxide: catalyst CO(g) + 2H2(8) CH2OH(1) How much heat (in kJ) is released when 15.0 L of CO at 85°C and 112 kPa reacts with 14.6 L of H, at 75°C and 744 torr? kJ
3 attempts left Check my work Enter your answer in the provided box. An ideal gas originally at 0.85 atm and 65°C was allowed to expand until its final volume, pressure, and temperature were 94 mL, 0.60 atm, and 49°C, respectively. What was its initial volume? mL