while studying exothermic reactions, laura and her lab partner are instructed to add magnesium to hydrochloric acid. based on their math, the theoretical yield of magnesium chloride is 10.75 grams. they measured the mass of magnesium chloride at the conclusion of the reaction and found that 10.31 were produced. what is the percent yield?

a)104%
b)96%
c)91%
d)88%

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

Explain what happens at the saturation point when adding salt to water at room temperature.