What formula has an ion formed by lithium atom which has a mass number of 7

What is the independent variable in this investigation? mass volume sample number substance density

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?