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Concept explainers
(a)
Interpretation:
The molecular weight of the methane gas and its density in gram per litre should be identified.
Concept introduction:
It can also be defined as that one mole of any gas contains a volume of
The conditions of
(b)
Interpretation:
The molecular weight of the carbon dioxide gas and its density in gram per litre should be identified.
Concept introduction:
Ideal gas law: The gas law which relates the variables temperature, volume, pressure and the number of molecules and this law can be mathematically expressed as:
It can also be defined as that one mole of any gas contains a volume of
The conditions of
(c)
Interpretation:
The molecular weight of the oxygen molecule and its density in gram per litre should be identified.
Concept introduction:
Ideal gas law: The gas law which relates the variables temperature, volume, pressure and the number of molecules and this law can be mathematically expressed as:
It can also be defined as that one mole of any gas contains a volume of
The conditions of
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Chapter 8 Solutions
Fundamentals of General, Organic, and Biological Chemistry, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (8th Edition)
- A helium gas cylinder of the sort used to fill balloons has a volume of 0.180 m3 and a pressure of 150 X 105 Pa (150 atm) at 298 K (25 °C). How many moles of helium are in the tank? How many grams?arrow_forwarddefine the equilibrium constant KP for the chemical equilibrium ofideal-gas mixtures?arrow_forwardHow many moles of chlorine gas at 120. °C and 33.3 atm would occupy a vessel of 39.0 L?arrow_forward
- How many liters of dry hydrogen gas, measured at 798 mmHg and 21C, will be released by the decomposition of 230 mL of H20 at 1.42atm and 30C? 2 H20 (g) → 2 H2 (g) + O2 (g) Answer to 3 decimal places. Your Answer: Answer unitsarrow_forwardAn adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%)O2 20.6 15.1CO2 0.0 3.7N2 77.4 75.0H2O 2.0 6.2The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O2, CO2, and H2O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute. 2. Calculate the volume of air exhaled per milliliter inhaled. 3. At what rate (g/min) is this individual losing weight by merely breathing?arrow_forwardA cylinder of gas at room temperature (20 degrees Celsius) has a pressure P1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 1.2p1?arrow_forward
- A quantity of gas in a piston cylinder had a volume of 0.539 m^3 and a pressure of 200 Pa. the piston compresses the gas to 0.222 m^3 in an isothermal (constant-temperature) process. What is the final pressure of the gas?arrow_forwardAt 25.0 °C the Henry's Law constant for dinitrogen monoxide (N,0) gas in water is 0.025 M/atm. Calculate the mass in grams of N,0 gas that can be dissolved in 450. mL of water at 25.0 °C and a N,0 partial pressure of 1.31 atm. Be sure your answer has the correct number of significant digits. ?arrow_forwardIn 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate the percent dissociation of (a) 0.40 M HClO; (b) 0.035 M HClO (Ka = 2.9x10-8).arrow_forward
- Determine and report the pressure of collected hydrogen gas in atmospheres. Report this result to one more digit than allowed by applying the rules of significant figures. (1 atm = 760 mm Hg, an exact conversion factor.) Determine the moles of hydrogen collected by substituting the appropriate quantities into the ideal gas equation and solving. Report this result to one more digit than allowed by applying the rules of significant figures. Notes: the gas temperature is the same as the listed temperature; R = 0.082057 L-atm/mol-K. Be mindful of units. Determine the experimental atomic mass of Cu. Round this result to the correct number of significant figures. Determine the percent relative error (= ????????????−?h????????? ? 100). The molar mass of Cu is 63.546 g/mol. Mass of copper before electrolysis 6.008 g Mass of copper after electrolysis 5.860 g Volume of H2 collected 58.9 mL Pressure of H2, PH2 720.8 mm Hg Temperature 24.0 oCarrow_forwardA mouse is placed in a sealed chamber with air at 754.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 and H2O produced by the mouse. The gas volume in this chamber is measured to be exactly 2.00 L, the temperature is held constant at 295 K. After two hours the pressure inside the bottle falls to 717.4 torr. What mass of oxygen has the mouse consumed?arrow_forwardNicotine, an alkaloid in the nightshade family of plants that is mainly responsible for the addictive nature of cigarettes, contains 74.02% C, 8.710% H, and 17.27% N. If 40.57 g of nicotine contains 0.2500 mol nicotine, what is the molecular formula?arrow_forward
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