To whom it may concern,
Hello, I need help with this question:
Question:
Two moles of He (Helium) gas are at 24 degrees C and a pressure of 210 kPa. If the gas is heated to 46 degrees C and its pressure reduced to 21 % of its initial value, what is the new volume?
Which formula should I use?
Let me know when you can.
Thank you!
To whom it may concern, Hello, I need help with this question: Question: Two moles of...
To whom it may concern, Hello, I need help with this question: Question: Compute the number of molecules in a gas contained in a volume of 5.00 cm^3 at a pressure of 8.00E-03 atm and a temperature of 500 K. Which formula should I use? Please let me know when you can. Thank you!
To whom it may concern, Hello, I need help with this question: Question: "A cylinder with a piston contains 0.6 kg of water at 100 degrees C. What is the change in internal energy of the water when it is converted to steam at 100 degrees C at a constant pressure of 1 atm? The density of water is 1000 kg/m^3 and that of steam is 0.6 kg/m^3. The latent heat of vaporization of water is 2.26E+06 J/kg." Let me...
To whom it may concern, Hello, I need help with this question: Question: An aluminum cup of 0.20 liter capacity is filled with mercury at 14.0 degrees Celsius. How much mercury, if any, will spill out of the cup if the temperature is raised to 25.0 degrees Celsius? The coefficient of volume expansion of mercury is 1.82 E-04/ degree Celsius. Express your answer in cubic centimeters. I am having some difficulty picturing this. Which formula should I use? I think...
To whom it may concern, Hello, I need help with this question. The answer for Joules/Kelvin of J/k = 3.894655709 is not correct. Question: "A 20.0 g ice cube at 0.0 degrees C is placed in a lake whose temperature is 13.0 degrees C. Calculate the change in entropy (in joules/Kelvin) of the system as the ice cube comes to thermal equilibrium with the lake. (c for water = 4186 J/kg-K)" What formula should I use? Let me know when...
To whom it may concern, I need help with this question: Question: A scuba diver at 10 m below the surface of a lake, where the temperature is 5 degrees C, releases an air bubble with a volume of 16 cm^3. The bubble rises to the surface, where the temperature is 22 degrees C. What is the volume of the bubble (in cubic centimeters) just before it reaches the surface? (The density of water is 1000 kg/m^3 and air pressure...
To whom it may concern, Hello, I need help with this question and seeing if I am doing the work and drawings correctly with units. The answer 843.0296378 meters per second is not correct. Question: "Two electrons are 2.40 m. apart. Another electron is shot from infinity and comes to rest midway between the two. What must its initial velocity be (in meters/second)? " Let me know when you can. Thank you!
QUESTION 4 A balloon containing 2.1 moles of Helium takes up 2.3 L. If the balloon is opened and the amount of gas is reduced to 1.4 moles of Helium, what is its new volume (in L)? The temperature and pressure are held constant. A. 3.45 B. 1.5 C.8.0 1.3 QUESTION 5
I need help in these questions: please help ! 1. A balloon containing 157 moles of ammonia gas has an initial volume of 60.0 mL at a temperature of 80.0 C. What is its final temperature when the volume is reduced to 50 mL? 2. An atmospheric sample contains nitrogen at 554 torr, carbon dioxide at 170 torr and oxygen. Assuming STP conditions and a total of 10.0 moles of the gas mixture, what is the partial pressure of oxygen...
Hello, I need help with the following word problem:
Question:
"You are a detective trying to solve a murder. A body was found
by a janitor with an initial temperature of 85 degrees Fahrenheit
at 7:00 AM. One hour later, when you arrive at 8:00 AM, the body of
the victim has dropped to 80 degrees Fahrenheit. The temperature of
the office was at a constant 70 degrees Fahrenheit. With your
knowledge of the human anatomy, you know that the...
Hello, this is the up-dated accounting question that I have.
Images are attached. If you need more information, let me know.
Thanks in advance.
We were unable to transcribe this imageD. Internal Rate of Return Cash tlows by year Year 3 Use excel IRR formula Year 0 Year 1 ear 2 Year 1 Ycar 5 Year G IRR OK, you can type this data in Ox, you can type this data in ox, you can type this data in Not...