Calculate the residence time of sodium. fill in the blanks. use t= m/f mass (m) flow rate (f) ton ton/year sodium 2.8 x 10^13 3.5 x 10^5 zach is investigating the residence time of sodium in sea water. according to zach's data table, the residence time of sodium written in scientific notation is x 10 years.

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Which of the following isotopes has the same number of neutrons as phosphorus-31?