chem

Forty miles above the earth's surface the temperature is 250 K and the pressure is only 0.20 mm Hg. What is the density of air (in grams per liter) at this altitude? (Assume the molar mass of air is 28.96 g/mol.)

PV=nRT
n/V= molar desity= P/RT
mass density= molar density*molmass
= P*(molmass)/RT

Watch your units.

  1. 👍 0
  2. 👎 0
  3. 👁 644

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    a diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15 degrees celcius. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is

  2. Science

    1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed

  3. trig

    In a computer simulation, a satellite orbits around Earth at a distance from the Earth's surface of 2.1 X 104 miles. The orbit is circular, and one revolution around Earth takes 10.5 days. Assuming the radius of the Earth is 3960

  4. Science

    On the surface of the Earth, it is approximately 6,200 miles to the North or South pole. How many miles is it between two parallels 5 degrees apart?

  1. Science

    Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1

  2. Physics, fluid mechanics

    The temperature of earth atmosphere drops 5°C for every 1km elevation above the earth surface. If the air temperature at ground level is 15°C and 760 mmHg, determine the elevation in m when the pressure is 380 mmHg. Assume the

  3. math 15

    find the minimum height above the surface of the earth so that the pilot at point a can see an object on the horizon at c 125 miles away. assume the diameter of the earth to be 8000 miles.

  4. Physics

    The surface of the Sun is approximately 5700 K and the temperature of the Earth's surface is about 290 K. What total entropy change occurs when 1000 J of heat of energy is transferred from the Sun to the Earth?

  1. Earth Science

    On the surface of the earth, it is approximately 6,200 miles from the equator to the north or south pole. How many miles is it between 2 parallels 1 degree apart?

  2. Precalculus

    A nautical mile equals the length of arc subtended by a central angle of 1 minute on a great circle on the surface of Earth. If the radius of Earth is taken as 3960 miles, express 1 nautical mile in terms of ordinary, or statute,

  3. Chemistry

    Divers know that pressure exerted by the water increases about 100kPa with every 10.2 m of deptt. This means that at 10.2 m below the surface, the pressure is 201kPa; at 20.4 m, the pressure is 301kPa; and so forth. Given that the

  4. chemistry

    A scuba diver takes a 2.3L balloon from the surface, where the pressure is 1.0atm and the temperature is 37degrees C, to a depth of 35m, where the pressure is 4.5atm and the temperature is 18degrees C.what is the final volume at

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