Which formula represents a polar molecule? (ch4) (hcl) (nh3)

An ideal gas at constant temperature is confined in an airtight cylinder, and a piston pushes down on the gas in the cylinder.

If you were given a 16.0 ml sample of solution A, describe how you could determine the mass of the sample using only your graph answer

Calculate the mass (in g) of a single starch molecule (c6h10o5).

Which of the following statements describes all the variables in an experiment? A. All variables are measured to provide data for the experimental results. . B. All variables are kept the same from one part of the experiment to another. OC.

What is the molarity of a solution containing 56 grams of solute in 959 ml of solution? (molar mass of solute = 26 g/mol) ?

A man is making chicken noodle soup and has found it to be too salty. What method could he use to make the soup less salty? a. Add equal measured amounts of water to the soup. b. Bring the soup to a boil so that some of the broth evaporates. c.

A solution of H2SO4 (aq) with a molal concentration of 3.97 m has a density of 1.216 g/mL. What is the molar concentration of this solution?

How can you chose values for x when making a table of values representing a real world situation?

If a sample containing 2.50 ml of nitroglycerin (density=1.592g/ml) is detonated, how many total moles of gas are produced?

A helium balloon initially at room temperature is dunked into a bucket of liquid nitrogen (T = 77 K). Which of the following will occur?