You have a certain mass of helium gas in a rigid steel container. You add the same mass of neon gas to this container. Which of the following best describes what happens? Assume temperature is constant. a) The pressure in the container more than doubles. b) The volume of the container doubles. c) The volume of the container more than doubles. d) The pressure in the container increases but does not double. e) The pressure in the container doubles.

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon