Chemistry College

A sample of gas at 62.0°C occupies a volume of 4.80 L at a pressure of 2.90 atm. How many
moles of gas are contained in the sample?

Answers

Answer 1

Answer: 37.01 moles (mol) of gas

Explanation:Use PV=nRT

which is also equal to n=PV/RT

P=2.90

V= 4.80

R = 8.31 (R will always be the same in any equation)

T= 62.0

2.90 x 4.80= 13.92 / 8.31 x 62= 515.22

13.92/13.92=515.22/13.92

n= 37.01 mol

Related Questions

1. How many electrons are in Argons outer shell?
2. How many electrons are in Lithium's outer shell?
3. How many times can Oxygen bond?
4. What is the charge on a phosphorus ion?
5. What is the charge on a calcium ion?​

Answers

Answer:

jwwnwwjkqnwjwmwnqnqwnmqaj

Answer:

1. 8

2.1

3.4 times

4.3-

5. 2+

Explanation:

1. it qualifies under the octet rule and is completely stable.

2. 1 because  it fills every shell and has one left over

3. each time an element like oxygen bonds it can be surrounded by 8 electrons in order to be stable and each line that you may see counts as two electrons so it can have 1 bond line in each direction.

4.&5. It just is that way

1. A helium-filled balloon had a volume of 8.50 L on the ground at 20.0°C and a
pressure of 750.0 Torr. After the balloon was released, it rose to an altitude where the
temperature was 40.0°C and the pressure was .550 atm. What is the new volume of
the balloon in liters at the high altitude?

Answers

Answer:

133.74 L

Explanation:

First we convert the given pressures and temperatures into atm and K, respectively:

750.0 Torr ⇒ 750/760 = 0.9868 atm20°C ⇒ 20+273.16 = 293.16 K40°C ⇒ 40+273.16 = 313.16 K

Then we use the PV=nRT formula to calculate the number of moles of helium in the balloon, using the data of when it was on the ground:

0.9868 atm * 8.50 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 293.16 Kn = 2.866 mol

Then, knowing the value of n, we use PV=nRT once again, this time to calculate V using the data of when the balloon was high up:

0.550 atm * V = 2.866 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 313.16 KV = 133.74 L

Which is one factor that increases the speed of a sound wave? A. higher temperature B. lower temperature C. traveling in a liquid rather than a solid D. traveling in a gas rather than a liquid

Answers

C. A sound wave travels faster in less dense material

Answer: c

Explanation:

Other Questions
Four resistors , R1=12ohms, R2= 15 ohms , R3= 18 ohms and R4=10 ohms are connected to 6 v battery in series what is the total resistance in the circuit? I really need help! pls..... I will make brainlist if the answers are good and right. suppose that grade point averages of undergraduate students at one university bell-shaped distribution with a mean of 2.57 and a standard deviation of 0.4 describe where approximately 99.7% of a grade point averages lie put the following equation on a line into slope intercept form simplified all fraction 12 x + 3 Y equals -18 Pam always drives under the speed limit to her risk and keep insurance costs down. Even so, she got into an accident and filed a to cover the expenses of repairing her car. One of the costs of doing so was that her insurance would likely increase in the future.answers:1. reduce2. claim3. premiums Explain how music can help people who are going through rough situations in their life. What effect would not having music have on said person? What is the y-interceptof this line? PLEASE HELP I WILL MARK BRAINLIEST TO WHOEVER ANSWERS CORRECTLY FIRST Directions: Read the passages and underline words and phrases that help set the mood. Write down the mood of the passage and explain your answer.Mood # 11. Trey looked out the window. The rain was still pouring down. He threw his baseball glove on the couch with a sigh. The thunder cracked and his phone dinged. Trey picked up the phone. It was a message from his cousin: The game is cancelled because of the weather. Trey didn't reply to the message. He threw the phone back on his bed and rubbed his temples. The rain pattered on the roof.Q: What is the MOOD of this paragraph? Q: Why do you believe this? Explain your answer by referring to the text and providing exact evidence. Can someone help me with these two for brilliant please The material point moves in a straight line according to the law s (t) = t ^ 2 + 10t - 5, the stage of the point's velocity at the moment t = 2.Find the speed of the point at the momentt = 2i translated this problem from different language, hopefully everything was translated right, please help, thank you A parking garage owner wants to collect $2,250.00 in parking fees. If he charges $15.00 for each car, how many cars are needed to meet his goal?A 150 carsB 168 carsC 169 carsD 301 cars PLEASE HELP WILL MARK BRAINLIEST If HIPPAA Laws were active in the 1950s,what impact do you think it might have hadon Biomedical Science? Evan gets a C in history, so hebecomes determined to get an A inmath.What defense mechanism is Evanusing?A. projectionB. compensationC. denial Where is the population center of the Guianas?mountainscoastinteriorplateaus 20 A measure of the speed and direction of an object's motiona. velocityb. speed.c. momentum necesesito un Ensayo de un tema libre Does 514, 684, 855 make a right triangle PLEASE HELP I WILL GIVE BRAINLESIST Joel rides bikes in his city There are 4 lengths of race tracks.