Lab 9 pre-lab

Which one ?

Can someone explain to me why in the first part of the equation it would be 20-x instead of x-20?

At a pressure of 2.20 atm and 37 °C, the density of ____________ gas is 5.54 g/L.A) sulfur trioxideB) carbon dioxideC) sulfur dioxideD) chlorineE) krypton

The stopcock connecting a 4.82 L bulb containing oxygen gas at a pressure of 7.91 atm, and a 3.57 L bulb containing neon gas at a pressure of 2.92 atm, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, the final pressure in the system is _______atm.

ited .doc C The stopcock connecting a 2.00 L bulb containing nitrogen gas at a pressure of 636 mm Hg, and a 2.00 L bulb containing methane gas at a pressure of 446 mm Hg, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, what is the final pressure in the system? Submit Answer $ 4 R F 95 % Retry Entire Group F5 [Review Topics] [References] Use the References to access important values f needed for this question. T G 6 B MacBook Air Y 9 more group attempts remaining H & 7 U N mm Hg 8 1 M ( 9 K F9 O ) P Previous Email Instructor Next Save and Exit [ Show All 1 X

The total pressure in a mixture of gases is equal to the partial pressure(s) of ________.       A) the gas with the greatest number of moles       B) the gas with the smallest number of moles         C) the gas with the highest molecular weight       D) all the gases added together

One mole of N2 gas contains______N atoms a)1.20x1024 b)28 c)6.022x1023 d)2

One molecule of N2 gas contains ______N atoms a)1.20x1024 b)28 c)6.022x1023 d)2

Chemistry 1. A(n) _____ is a device used to measure atmospheric pressure. a. manometer b. psychrometer c. barometer d. sphygmomanometer 2. A device called a _____ is often used to measure the pressure of an enclosed sample of gas in the laboratory. a. psychrometer b. barometer c. manometer d. sphygmomanometer 3. Which of the following is not a unit of pressure? a. lb/in3 b. mm Hg c. atm d. torr 4. _____ states that the total pressure exerted by an unreactive mixture of gases is equal to the sum of the partial pressures that each of the components gases of that mixture exert. a. Boyle’s Law of Isolated Pressures b. Dalton’s Law of Individual Pressures c. Avogadro’s Law of Partial Pressures d. Dalton’s Law of Partial Pressures

Gas Stoichiom ND x - OneNote Insert Draw History Review View Learning Tools Test Atomic Structure NW1 Electrons in Atoms Periodic Table Reference Material 7. In one batch 214,000 grams of (NH.)2SO4is to be made. How many liters of NH3 are needed when the volume is measured at 24°C and 0.982 atm? 2 NH, + 1 H SO, -> 1(NH.),SO, 50.0 grams of CaC, is converted to CH,. How many liters, at 24°C and 745 torr of C H, should be produced? 8. I Ca(OH) I CH 1 CaC, + 2 HO >

A sample of carbon dioxide gas at a pressure of 0.620 atm and a temperature of 28.5 celcius, occupies a volume of 18.6 L. If the gas is allowed to expand at constant temperature to a volume of 27.3 L, the pressure of the gas sample will be _______atm.

1. A 2 L tank contains gas at a temp of 300k. How many moles are In the tank if the pressure is at 2.3 atm? 2. Assuming a mixture of N2 and O2 are in a tank, how many grams of O2 are inside if the partial pressure of N2 is 1.5 atm? 3. Assuming the volume remains constant, how will the gas pressure change if the pressure decreases by 200k? 4. 60g of gas in a 5 L container. Calculate the density and molar mass. 5. 20 moles of Argon in a 20 L tank at 300k temp. What is the pressure in the tank if Argon isn't an ideal gas?

6. Standard temperature and pressure (STP) are 0°C and 760 atm pressure.   Group of answer choices True False   7. A mixture of one mole of H2 and one mole of CH4 at STP will occupy a volume of 44.8 L.   Group of answer choices True False

A sample of gas (24.2 g) initially at 4.00 atm was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was __________ atm.

16-23

Dalton v Accessibility Mode Imn 7. Two tanks are connected by a closed valve. Each tank is filled with gas, and both tanks are held at the same temperature. We open the valve and allow the gases to mix. Tank A contains 5.00 L of oxygen at 24 atm, and tank B contains 3L of nitrogen at 32.0 atm. a. After the gases mix, what is the partial pressure of each gas? b. What is the total pressure? 8. A gaseous mixture contains 3.23 g of chloroform, CHCl3, and 1.22 g of methane, CH4. Assuming that both compounds remain as gases, what pressure is exerted by the mixture inside a 50.0 ml metal container at 275C? What is each of the partial pressures in atm?

16.3 L of gas at 33.6 °C and 711 mm Hg are heated to 193 °C, and the pressure is changed to 364 mm Hg. What is the new volume? Volume= _________L

All changes saved 10. A sample of gas stored at STP has a volume of 7.0 L. The gas is cooled to 250 K and expands to a volume of 8.0 L. What is the pressure of the gas after it is cooled? 40.1 kPa 160 kPa 80.1 kPa E 250 kPa | 11. Which question can be answered using the scientific method? D Which kind of wax melts faster? How do bees make wax? Who discovered wax? What kind of wax are crayons made of? PREVIOUS 1-50 of 50 NEXT REVIEW

A gas is held at constant temperature. The initial pressure & volume are 20 atm and 80 mL, respectively. If the pressure is reduced to 5 atm, then the new volume is ____________ mL.

23-According to Kinetic Molecular Theory, the kinetic energy of gas particles ________ with increasing temperatures. a-Decreases b-increases c-stays the same

Solve both parts otherwise I will downvote