Chemistry Homework Help

24/7 Chemistry Homework Help

Get step-by-step solutions from expert tutors.

How it works?

Ask a question

Type, take a picture, or paste your question with all necessary details to ensure high-quality responses.

Get an answer in less than 24hrs

Once our tutors receive the question, they'll begin. You'll get an email once the solution is ready.

Get Notified

We will send you email and text notification to let you know when your question is answered.

Browse Homework Solutions

24 solutions

Pressure Units

Q. a barometer shows a 70.0 cm column of mercury. what is the pressure (in Pa)? the gravitational constant is 9.81 m s^-2 and the density of mercury is 13.6g cm^-3 a) 1185 b)108 c) 9.34x10^4 d)1.0

Solved • Dec 2, 2019

Pressure Units

Q. Bubbles of oxygen gas from photosynthesis form on the leaves of an underwater plant at a depth of 131 ft. If the plant is growing near the coast of new Jersey on a day on which the atmospheric pressure is 729 mmHg, what is the pressure of the oxygen gas in one of the bubbles mentioned above :

Solved • Nov 24, 2019

Pressure Units

Q. Bubbles of Oxygen gas from photosynthesis form on the leaves of an underwater plant at a depth of 140. ft. If the plant is growing near the coast of New Jersey on a day on which the atmospheric pressure is 760. mmHg , what is the pressure of the Oxygen gas in one of the bubbles mentioned above? (1 in = 2.54 cm) A. 5.13 atm B. 4.82 atm C. 3.86 atm D. 2.90 atm E. 0.96 atm

Solved • Nov 23, 2019

Pressure Units

Q. 1. A barometer shows a 62.0 cm column of mercury. What is the external pressure in Pa, atm, torr, and mmHg? (g = 9.81 m s^-2; d(Hg) = 13.6 g cm^-3)

Solved • Sep 25, 2019

Pressure Units

Q. High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 5.41x10^8 Pa, what is its running pressure in torr? Express the pressure numerically in torr.

Solved • Oct 28, 2019

Pressure Units

Q. The pressure in car tires is often measured in pounds per square inch (lb/in.^2), with the recommended pressure being in the range of 25 to 45 lb/in.^2. Suppose a tire has a pressure of 45.0 lb/in.^2. Convert 45.0 lb/in.^2 to its equivalent in atmospheres. Express the pressure numerically in atmospheres.

Solved • Oct 28, 2019

Pressure Units

Q. Convert 0.800 atm of pressure to its equivalent in millimeters of mercury. Express the pressure numerically in millimeters of mercury.

Solved • Oct 28, 2019