chemistry

posted by .

SHOW WORK
How many moles of helium occupy 26.4 L at a pressure of 103.0 kPa, and 10 degrees Celsius?
A.) 0.03 mole
B.) 0.86 mole
C.) 1.16 mole
D.) 32.72 mole

  • chemistry -

    PV = nRT

    P = pressue
    V = volume
    n = moles
    R = 8.31
    T = Temperature (0c = 273K)

    (103.0)(26.4) = n(8.31)(283)
    2719.2 = n(2351.73)
    2719.2 / 2351.73 = n
    m = 1.16

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Determine the simplest formula for compounds that have the following analyses. The data may not be exact. A. 28.5% iron, 48.6% O, 22.9% S This is what I did: 28.5g Fe 1 mole Fe/55.847g = .51 mole 48.6g O 1 mole O/15.999g = 3.04 mole …
  2. chemistry

    Determine the theoretical yield of C when each of the following amounts of A and B are allowed to react in the generic reaction: A+2B-->3C 1) 1mol A; 1 mole B 2) 1mole A; 3 mole B 3) 2mole A; 2 mole B 4) 32mole A; 68 mole B
  3. Chemistry

    According to the balanced equation 6 moles of carbon dioxide will react with 6 moles of water to produce 1 mole of sugar and 6 moles of oxygen. What are the molar masses of the following compounds from the photosynthesis equation?
  4. Chemisty (please read soon)

    which will become a buffer in 1L of H2O? a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3 mole HCl d) 0.2 mole NaOH & 0.2 mole HBr e) 0.4 mole HC2H3O2 & 0.2 mole NaOH I think that the answer is e.
  5. chemistry

    What is the mass of 4.80 moles of MgCl2?My answer is: Mg=24.3 g/mole Cl2=35.5g/mole*2=71g/mole so, Mg 24.3+ Cl2 71= 95.3g/mole therefore 4.80 moles * 95.3 g/mole=471.84g Am i right pls correct me if i'm wrong thanks
  6. Chemistry

    Two liquids A and B have vapor pressures of 71.3 and 131 mmHg, respectively, at 25 degrees Celsius. What is the total vapor pressure of the ideal solution made up in the following concentrations?
  7. Chemistry

    How many moles of Sulfur are in 1 mole of Al2(SO4)3 and If the densitry of a noble gas is 1.783 g/L at STP, that gas is.... My guess: Argon?
  8. Chemistry

    1 mole of equimolar mixture of ferric oxalate and ferrous oxalate will require xmole of KMnO4 in acidic medium for complete oxidation, x isis: a) 0.5 mole b) 0.9 mole c) 1.2 mole d) 4.5 mole
  9. Science

    if 0.75 mole of helium gas occupies a volume of 1.5. what volume will 1.2 mole helium occupy at the same teperature and pressure?
  10. chemistry

    How much mole of dry hydrogen at NTP is liberated on heating 0.1 mole of Mg with excess of dilute HCl?

More Similar Questions