6.8 grams of KBR is dissolved in 100 grams of water

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes

In the diagram here that represents the reaction, which reactant, a or b, is the limiting reagent?