Given the balanced reaction below, If 0.10 mol of BF3 is reacted with 0.25 mol H2, which is the limiting reactant? 2 BF3+ 3H2=2B+ 6HF

A- .40 mol Hf
B- .75 mol Hf
C- .50 mol Hf
D- .30 mol Hf​

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?