Magnesium chloride yield sulfur dioxide Calcium carbonate yields calcium oxide plus carbon dioxide Nitrogen plus hygrogen yield ammonia Hydrochloric acid plus sodium hydroxide yield sodium chloride plus water

Hey I need some advice. I'm currently a high school junior, and I am HOPELESS at mathematics. I've always managed to scrape by with 65s, and trust me its not lack of effort, I try really hard. All my other grades are over 90s, with the exception of sciences which are in the high 80s. Last year I...

81 divided by 3726.83 divided by 3158

1.) NaCl (aq) + MnO2 (s) -------->Mn2+ (aq) + Cl2 (g) in H2SO4 2.) KCN (aq) + KMno4 (aq) --------> CNO- (aq) + MnO2(s) in KOH

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