Zandria

Most popular questions and responses by Zandria
  1. Chemistry

    Which of the following indicates the greatest pressure? A) 1 atm B) 777 torr C) 5.5 mm Hg D) 1000 Pa E) 12 psi

    asked on June 14, 2009
  2. Chemistry

    Which of the following indicates the least pressure?A) 1 atm B) 777 torr C) 5.5 mm Hg D) 100 kPa E) 12 psi

    asked on June 14, 2009
  3. Chemistry

    A cylinder of argon gas contains 125 mol at a pressure of 150 atm and a temperature of 27°C. After some of the argon has been used, the pressure is 136 atm at 27°C. What mass of argon remains in the cylinder? A) 4.23 × 103 g B) 113 g C) 5.52 × 103 g D)

    asked on June 14, 2009
  4. Chemistry

    Calculate the height, in feet, of a column of water that would exert the same pressure as a column of mercury that is 754 mm high. (The density of mercury is 13.6 g/cm3 and the density of water is 100 g/cm3.)

    asked on June 14, 2009
  5. Chemistry

    Given the following thermochemical equation, calculate the heat (in kJ) involved in decomposing 18.0 g of water to give one mole of H2 (g).

    asked on June 14, 2009
  6. chemistry

    A sulfuric acid solution at 25 °C has a density of 1.27 g/mL. A 20.0-mL sample of this acid is measured out at 25 °C, introduced into a 50-mL flask, and allowed to cool to 21 °C. The mass of the flask plus solution is then measured at 21 °C. Use the

    asked on May 25, 2009
  7. Chemistry

    (a) What is the diameter, in micrometers, of a spherical ink droplet from an early version of an ink-jet printer if the volume of the droplet is 200 ± 10 pL? If the ink has a density of 1.1 g/mL, what is the mass in milligrams of ink in a droplet from

    asked on May 25, 2009
  8. chemistry

    A small storage tank for liquefied petroleum gas (LPG) appears to be spherical and have a diameter of about 1 ft.Suppose that some common volumes for LPG tanks are 1 gal, 2 gal,5 gal, and 10 gal. Which is the most probable voume of this particular tank?

    asked on May 25, 2009
  1. Chemistry

    A cylinder of argon gas contains 125 mol at a pressure of 150 atm and a temperature of 27°C. After some of the argon has been used, the pressure is 136 atm at 27°C. What mass of argon remains in the cylinder? A) 4.23 × 103 g B) 113 g C) 5.52 × 103 g D)

    posted on June 14, 2009