Pick the two true statements from the following: graduated cylinders are used to measure volume. all graduated cylinders measure liquids with the same precision. graduated cylinders are the only instruments used to measure volume in the laboratory. always read a graduated cylinder from the bottom of the meniscus.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.