Ask questions and get helpful responses.
Ask a New Question
  1. Questions

chemistry

Convert the following pressures to pressures in atmospheres. a. 151.98 kPa
b. 45.6 psi

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Suzanne

  1. 1 atm = 101.325 kPa.
    1 atm = 14.7 psi

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    DrBob222

  2. How do I actually do this? I am trying to show my daughter how to do it and have no clue.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Suzanne

  4. Those are conversion factors that I posted. Let's work with the first one. A conversion factor converts anything you have into anything you want (if you have the right factor and use it correctly). So the factor is 1 atm/101.325 kPa and of course it can also be 101.325 kPa/1 atm.

    So you want 151.8 kPa converted to atm. That's 151.8 kPa x factor = ? atm. So we could do this two ways, only one of which is correct.
    151.8 kPa x (1 atm/101.325 kPa) = ?
    OR
    151.8 kPa x (101.325 kPa/1 atm) = ?

    So which do we pick. We always choose the one in which the unit we want to lose is canceled and the unit we want to stay stays. That is, notice the first way the kPa in the numerator cancels with kPa in the denominator. What unit is left? atm. And that's what we want. We want the answer in atm. If you guessed wrong and used the second way of doing it, notice that nothing cancels. In fact, the unit you get is (kPa)^2/atm which isn't the unit we wanted and you KNOW that can't be right. With practice you want need to do it trial and error but mentally you will place the unit you want to cancel in the bottom of the factor and the unit you want to keep goes on top of the fraction. Hope this helps.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    How much absolute (total) pressure must a submarine withstand at a depth of 120m in the lake. Give answer in kPa. (Use 10m/s^2 for g). h=120m p_water = 1 g/cm^3 = 1000 kg/m^3 p_atmosphere = 101.3kPa P_total = ? P_water =density

  2. physics

    How much absolute (total) pressure must a submarine withstand at a depth of 120m in the lake. Give answer in kPa. (Use 10m/s^2 for g). h=120m p_water = 1 g/cm^3 = 1000 kg/m^3 p_atmosphere = 101.3kPa P_total = ? P_water =density

  3. holy name university

    the pressure of a mixture of nitrogen,carbon dioxide and oxygen is 150 kPa.Wat is the partial pressure of oxygen if the partial pressures of the nitrogen and carbon dioxide are 100 kPa and 24 kPa,respectively?

  4. Chemistry

    Two liquids, A and B, have vapor pressures at a given temperature of 24 mmHg and 36 mmHg, respectively. We prepare solutions of A and B at a given temperature and measure the total pressures above the solutions. We obtain the

  1. Chemistry

    A McLeod gauge measures low gas pressures by compressing a known volume of the gas at constant temperature. If 315 cm^3 of gas is compressed to a volume of 0.0457 cm^3 under a pressure of 2.51 kPa what was the original gas

  2. chemistry

    Some SO3(g), intially at 1.000 atm, is placed in an empty reaction vessel. At equilibrium, the total pressure is 1.017 atm. Assuming the partial pressures are in atmospheres, what is Kp for the reaction below? 2 SO3(g) ⇌ 2

  3. mole fraction

    A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 241 torr. Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What

  4. chemistry

    Some CH4(g), initially at 1.000 atm, is placed in an empty reaction vessel. At equilibrium, the total pressure is 1.981 atm. Assuming the partial pressures are in atmospheres, what is Kp for the reaction below? 2 CH4(g) ⇌

  1. Chemistry

    A mixture of 0.47 mole of H2 and 3.59 moles of HCl is heated to 2800C. Calculate the equilibrium partial pressures of H2 Cl2 and HCl if the total pressure is 2.00 atm. For the reaction Kp is 193 at 2800C. H2(g) +Cl2(g) = 2HCl (g)

  2. Math 156

    The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136 mm Hg and a standard deviation of 13.4 mm Hg. Find the two blood pressures having these properties: the mean is midway between

  3. Chemistry

    At pressures greater than 60,000 kPa, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions? A.)It is much greater. B.)It is much less. C.)There is no difference. D.)It depends on the

  4. Chemistry

    The vapor pressures of ethanol (C2H5OH) and 1-propanol (C3H7OH) are 100 mmHg and 37.6 mmHg, respectively. Assume ideal behavior and calculate the partial pressures of ethanol and 1-propanol at 35 degrees Celsius over a solution of

Still need help? You can ask a new question.