Difference between empircal formula and molecular formula

Which of the following is an endothermic reaction? condensation of steam combustion of methane the reaction in a cold pack an explosion

What is the composition of the supercluster

How does a new hypothesis replace an order exclamation of something in the natural world

What mass of solid sodium formate (of MW 68.01) must be added to 150 mL of 0.42 mol/L formic acid (HCOOH) to make a buffer solu - tion having a pH of 3.74? Ka = 0.00018 for HCOOH. Answer in units of g.

Which type of elements on the periodic table would you expect to have low ionization energy?

Ammonia can be prepared by the reaction of magnesium nitride with water. The products are ammonia and magnesium hydroxide. Write and balance the equation.

Which period is the shortest in the long form of the periodic table? Name all the elements in this period.

A mole of gas at 0.0oC and 760. torr occupies 22.4 L. What is the volume of this gas at 25. oC and 760. torr

Is a nylon string conductor or insulator

Discuss 2 ways the cells are alike