Determine the percent yield for the reaction in which 15.8 g of
NH3 and excess oxygen produce
21.8 g of NO gas and water.​

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount