WORD Problem: Consider the reaction between silicon tetrachloride and hydrogen gas which yields a solution of hydrogen chloride (aka hydrochloric acid) and a precipitate of silicon. If 18.1 g of silicon tetrachloride reacts with 8.4 L of hydrogen gas (at STP), what mass of silicon will precipitate out?

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

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure