Calculate the mass of O2 produced by the decomposition of KClO3 when 856 mL of O2 is collected over water at 20.0°C and 1.015 atm. (The vapor pressure of water at 20.0°C is 17.5 torr.)

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.

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Why does his teacher ask him to balance the equation by including the correct coefficient