List two common acids that are not harmful to the body when ingested and a product in which each is used.

Not all acids are harmful to the body. Some acids are called dietary acids, that is, we take then in our diets. Examples of this is citric acid and lactic acid. Citric acid is found in oranges, limes, lemons, etc. Lactic acid is found in milk. Lactic acid is used in the industrial production of milk while citric acid is used in the industrial production of fruit drinks such as Ribena drink. 

It was ernest rutherford

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.