A4.704.70 g sample of a solid containing nini is dissolved in 20.0 ml water. a 5.00 ml aliquot of this solution is diluted to 100.0 ml and analyzed in the lab. the analyzed solution was determined to contain 5.355.35 ppm nini . determine the molar concentration of nini in the 20.0 ml solution.

Iwould but i dont know the answer

The correct answer is:   [c]:     "it is the minimum amount of material needed to sustain a fission  reaction."

Large asteroid and comet impacts. because they can have a huge impact on the environment, such as a loss of land, and crust on the earth with the big holes they produce. on the other hand, volcanic eruptions can also cause change within the environment by producing land, but im actually not quite sure which one would be a better answer, hopefully you read this and didnt just flat out choose the first sentence i have spoken! your welcome~