Chem

Calculate the massif 3.76x10^20 molecules of tricarbon disulphide. Determine the volume,at STP, of 10.24mol helium gas.

asked by Joe
  1. mass C3S2 = molar mass C3S2 x (3.76E20/6.02E23) = ?

    For the second, use PV = nRT

    posted by DrBob222

Respond to this Question

First Name

Your Answer

Similar Questions

  1. HELLO I NEED HELP AND NOBODY EVER HELPS ME.

    1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and
  2. science

    1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and
  3. AP Chem

    Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632
  4. chemistry

    A gas mixture is composed of 4.3 grams of hydrogen (density at STP = 0.089 g/L) and 2.9 grams of helium (density at STP = 0.179 g/L). What is the percentage (v/v) helium in the mixture? If v/v = Volume of gas/total volume how
  5. Chem

    How many molecules are there in an ideal gas with a volume of 1.99 L at STP?
  6. chem

    Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5g of neon at STP.
  7. Chemistry

    A sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/L t 273K and 1.00 atm. I know that the sample is at STP and that the 1 mole of
  8. Chem

    What volume do 3.8 x 10^22 molecules of NO2 gas occupy at STP?
  9. Physics

    At what temperature is the rms speed of helium molecules half its value at STP (0 C, 1.0 atm})?(answer in K) I think i need to use V_rms=sqrt3kT/m k=1.38e^-23J/K helium has 4g so i think helium molecule is 4/6.02e23 but i don't
  10. Chem

    Which of the following are correct statements? (Could be as many as 4) 1. One mole of gas contains 22.4 representative particles 2. Standard pressure is 100 mm Hg 3. One mole of a gas must have the same volume as one mole of any

More Similar Questions