What is the percent increase of CO2 in 1.00 m3 of air between 1880 and 2014?...
a) Find the density of air (in kg/m3) at a pressure of 1.00 atm and a temperature of 35.0°C, assuming that air is 78% N2, 21% O2, and 1% Ar. kg/m3 b) Find the density of the atmosphere on Venus (in kg/m3), assuming that it's 96% CO2 and 4% N2, with a temperature of 724 K and a pressure of 92.0 atm.
A physics lecture room has a volume of 248 m3 . Part A For a pressure of 1.00 atm and a temperature of 26.0 ∘C, use the ideal-gas law to estimate the number of air molecules in the room. Assume all the air is N2. Part B Calculate the particle density-that is, the number of N2 molecules per cubic centimeter. Express your answer to three significant figures and include the appropriate units. Part C Calculate the mass of the air...
Part A What volume of 1.00 M HCl in liters is needed to react completely (with nothing left over) with 0.250 L of 0.500 M Na2CO3? Express your answer to three significant figures and include the appropriate units. Part B A 419-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 12.1 g CO2. What was the concentration of the HCl solution? Express your answer to three significant figures and include the appropriate units. A Review Constants Periodic...
What mass of carbon dioxide is present in 1.00 m3 of dry air at a temperature of 23 ∘C and a pressure of 733 torr ?
Part A What mass of carbon dioxide is present in 1.00 m3 of dry air at a temperature of 21 ∘C and a pressure of 645 torr ? Part B Calculate the mass percentage of oxygen in dry air.
If 1.00 m3 of water at 0∘C is frozen and cooled to -12 ∘C by being in contact with a great deal of ice at -12 ∘C, estimate the total change in entropy of the process. Express your answer to two significant figures and include the appropriate units.
A proposed car air bag uses a canister of CO2 gas to inflate a 54 L bag at 20 ∘C and 1.04 atm pressure. What mass of CO2 must the canister contain? Express your answer to two significant figures.
The 2014-TB aluminum strut is fixed between the two walls at A and B. It has a 2 in. by 2 in. square cross section, and is subjected to the lorsional loading shown where T = 24 lb-ft and T 3 7 lb.ft. Figure 1) Part A Determine the reactions at the fixed support A Express your answer to three significant figures and include appropriate units. TA= Value Units Submit Request Answer Part B Determine the reactione at the lixed...
What is the approximate mass of air in a living room 4.3m×3.9m×2.7m? The density of air is 1.29 kg/m3. Express your answer to two significant figures and include the appropriate units.
1. What volume of 1.00 M HCl in liters is needed to react completely (with nothing left over) with 0.750 L of 0.200 M Na2CO3? Express your answer to three significant figures and include the appropriate units. 2. A 639-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 15.1 g CO2. What was the concentration of the HCl solution? Express your answer to three significant figures and include the appropriate units. Hydrochloric acid (HCl) reacts with sodium...