solve both pls Question 21 The density of a gas is 3.48 g/Lat STP. What is...
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Question 1 (1 point) What happens to the volume of a gas if the temperature of the gas decreases from 40°C to 20°C? Doubles Increases a little Does not change Decreases a little Gets halved Question 2 (1 point) Convert 25°C to K. -212 K -248 K 262 K -298 K 298 K Question 3 (1 point) What happens to the pressure of a gas if the volume of the gas increases? The pressure increases. The pressure...
1.) A gas is found to have a density of 3.165 g/L at STP. What is its molar mass? Which of the following gases is it most likely to be? Molar Mass: _________ a. NH3 b. O2 c. Cl2 d. SF6 2.) Calculate the pressure exerted by 5.05 moles of NCl3 gas in a 20.00-L container at -205°C for a real gas. (for xenon: a= 42.63 atm·L2/mol2 and b= 0.2450 L/mol) 3.) Which of the following is NOT true in...
QUESTION 8 The density of a gas is 1.2 g/L at STP. What is its molar mass? a. 30 g/mol b. 27 g/mol c. 46 g/mol d. 18 g/mol e. 29 g/mol QUESTION 4 What is the oxidation half-reaction for the reaction of zinc with hydrochloric acid? Zn(s) + 2H+ (aq) + 2C1"(aq) → Zn2+(aq) + 2Cl(aq) + H2(8) O a. 2H +(aq) + 2e (aq) → H 2(3)+261 (aq) b. 2H +(aq) + 2e - → H2(g) OC. Zn(...
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Nite Gas Laws Problem Set 1. According to Dalton's Law, what is the pressure of H, gas in a mixture with a total pressure of 1.5 atm if the hydrogen gas has a mole fraction of 0.5? (Ans: 0.75 atm) 2. In Charles Law the relationship between (P&T or V&T) is determined to be (inversely/directly) proportional. 3. Why must only SI units be used when making calculations using the Ideal Gas Equation? 4. What is...
Molar Volume 11. What is the volume of 0.60 g of methane (CH4 MM = 16.04 g/mol) at STP? STP? many grams of methane (CHE MM = 16.04 g/mol) are there in 7.00 7,00 L of the past Ideal Gas Law 0.278 8 of a mystery gas hydrocarbon occupies a volume of 0.400 L at 5 pressure of 886 mmHg. What is the molar mass of this gas, and what is L at 55.0°C and a what is its identity...
question 5.77
5.77 A sample of argon (Ar) gas occupies 65.0 mL at 22'C 750 torr. What is the volume of this Ar and gas sample at STP 5.78 A sample of 02 gas occupies 257 mL at 20°C and 1.20 atm of this O at STP? 570 Calculate the pressure, in atmosphere, of 7.0mof a monoxide stored in a 30.0-1..container at 65 5.71 Calculate the volume of 44.0 g of cartbo on at STP Calculate the volume of 44.0...
Question 37 - Part A Which of the following compounds will behave least like an ideal ges at low temperatures? O CCH 0 0 OKr OF o Ar SUDAN Request Answer Part B According to the kinetic molecular theory, the pressure of a gas in a container will decrease the the average kinetic energy of gas particles increases number of collisions with the container wall increases O temperature of the gas decreases O volume of the container decreases number of...
*SHOW YOUR WORK* (Boyle's Law): 1. What is the final volume (in mL) or argon gas is 50.0 mL at 705 torr is compressed to a pressure of 2.75 atm, at constant temperature? (Lewis Dot Structures): 2. Draw Lewis structures for the following molecules. Include partial charges, AXE designation, (example: AX2 E2), Electron-pair geometry and geometric-molecular shapes. Is it Polar or Non-Polar? CH2Cl2 SO2 3. Which of the following explains why the pressure of a gas increases when the temperature...
Problems 1. According to the Ideal Gas Law, which of the following is/are correct for a gas cylinder of fixed volume filled with one mole of oxygen gas? Please explain each one. a. When the temperature of the cylinder changes from 15 °C to 30 °C, the pressure inside the cylinder doubles. b. When a second mole of oxygen is added to the cylinder, the ratio T/P remains constant. C. An identical cylinder filled with the same pressure of hydrogen...
L. Under that conditions of temperature and pressure would you expect gases to obey the ideal-gas equation? 2 Calculate the value of R in L-atm/mol-K by assuming that an ideal gas occupies 3 Why do you equalize the water levels in the bottle and the beaker? 5 What is the value of an error analysis? 224 Lmol at STP 4 Why does the vapor pressure of water contribute to the total pressure in the bottle? Suggest reasons why real gases...