As the temperature of a sample of gas falls from 37.8 ºC to 77.9 ºC, its pressure falls to 103.8 mm Hg. If the volume did not change, what was the original gas pressure?

Select one:

a. 91.9

b. 50.4

c. 120

d. 414

Brass is a combination of a number of elements. Its exact composition can vary.

What is the pH of a 2.1 M solution of HClO4?

A solution is a homogeneous mixture.

Which type of soil holds the least water

Predict the products of NaCl (ag) + AgNO3 (ag)

An analytical chemist is titrating 242.5 mL of a 1.200 M solution of hydrazoic acid HN3 with a 0.3400 M solution of NaOH. The pKa of hydrazoic acid is 4.72. Calculate the pH of the acid solution after the chemist has added 1006.

A gas stream contains 18.0 mol% hexane and the remainder nitrogen. the stream flows to a condenser, where its temperature is reduced and some of the hexane is liquefied. the hexane mole fraction in the gas stream leaving the condenser is 0.0500.

What type of solution is aerated water. why is it so.

What elements form chemical bonds

Which of the following is not a pseudoscientific claim