Chemistry

1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr.

2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L.
a)Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.85 atm while the temp is held constant.
b)Use Charles's law to calculate the volume the gas will occupy if the temperature is increased to 160 degrees Celsius while the pressure is held constant.

3.A scuba diver's tank contains 0.29 kg of O2 compressed into a volume of 2.3 L.
a)Calculate the gas pressure inside the tank at 9 degrees Celsius.
b)What volume would this oxygen occupy at 25 degrees Celsius and 0.94 atm?

and
4. Calculate the rms speed of NF3 molecules at 21 degrees Celsius.
Somebody please help me!

  1. 👍 0
  2. 👎 0
  3. 👁 510
  1. 1) 4.98*10^23

    1. 👍 0
    2. 👎 0
  2. 234

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product

  2. Chemistry

    How many molecules are in 2.10 mol CO2? A. 2.53 x 10^24 molecules B. 3.79 x 10^24 molecules C. 3.49 x 10^24 molecules D. 1.26 x 10^24 molecules*** I think it is D, but can someone check my work? Amount of mols x Avogadro's number

  3. Chemisty

    Enrico Fermi was a famous physicist who liked to pose what are now known as Fermi problems in which several assumptions are made in order to make a seemingly impossible estimate. One example of a Fermi problem is "Caesar's last

  4. science

    Thermal energy is caused by motion of? 1. mixing water molecules contained in a beaker 2. molecules in soild liquid and gas phases 3. mixing molecules together 4. molecules that have reached equilibrium the density of an object

  1. biochemistry

    please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin

  2. Chemistry-Please help

    Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. A)What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal

  3. Chemistry

    At 25°C, Kp 1 10-31 for the following reaction: N2(g) + O2(g) 2 NO(g) Calculate the concentration of NO, in molecules/cm3, that can exist in equilibrium in air at 25°C. In air, PN2 = 0.8 atm and PO2 = 0.2 atm.

  4. Science

    If Maria wants to have the best chance of blowing out all of the birthday candles on her birthday cake, she should bend down close to the candles, take a deep breath, make a small opening with her lips and then push her breath

  1. Chemistry

    Olive oil has a higher viscosity than benzene. Which statement best explains the reason for the difference in viscosity between these two liquids? A. Molecules of olive oil take up a smaller volume than molecules of benzene. B.

  2. Chemistry

    Balloon- CO2 Balloon- O2 Balloon- He Balloon- N2 Balloon- CH4 Represented above are five identical balloons, each filled to the same volume at 25 degrees Celcius and 1.0 atmosohere pressure with the pure gases indicated. A) which

  3. chemistry

    How do you calculate the % empty sapce in 100mL of air. Using Avogadro's number(6.02x10^23) and the average volume of O2 and N2(3.8x10^-24 cm3/molecule). I think you can use the ideal gas law but am not really sure how to do it. I

  4. Science--Check My Answers?

    1. What is true about X-rays and microwaves? a. X-rays have greater speed than microwaves. b. X-rays have greater amplitude than microwaves. c. X-rays have greater frequency than microwaves. d. X-rays have greater wavelength than

You can view more similar questions or ask a new question.