the percentage of silver in a solid sample is determined gravimetrically by converting the silver to ag+(aq) and precipitating it as silver chloride. failure to do which of the following could cause errors in the analysis?

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.