An unknown quantity of gas is held at a temperature of 295 k in a container with a volume of 25 l and a pressure of 742 kpa. how many moles of gas are in the container?

Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Which element is the least metallic between cadmium, silver, zinc, or iron?