11 a student combined 1.2 g of h2 gas and 5.4 g of he gas in a 2.5 l closed container. what was the pressure exerted by the h2 gas if the mixture was at 22°c? (r = 0.08206 l · atm/mol · k) 36 atm 0.43 atm 12 atm 5.8 atm

For each of the following mixtures decide if filtering would be suitable to separate the substances. explain your answers. oil in water sugar in water sand in water chalk in water tea leaves in a cup of tea

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?