The reaction shown below produces at least one gaseous product in aqueous media. The resulting gas is usually collected for future use/analyses. (The vapor pressure of water at 20.21 ∘C is 2.369 kPa.) LiH(s) + H2O(l) ⟶ LiOH(aq) + H2(g)

A sample of LiH is completely reacted to produce H2 gas at a total external pressure of 741.2 mmHg at 20.21 ∘C. The volume of gas collected was 1073.09 mL. What mass of LiH was used to produce the gas?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.