Why are the average atomic masses of some of the elements in parentheses?

Butane is used as a fuel in camping gas stoves. 100 cm3 of butane is burned in excess oxygen. calculate the volume of carbon dioxide produced at r. t. p

Why do need to count atoms

A sample of an unknown compound was decomposed and found to be composed of 1.36 mol oxygen, 4.10 mol hydrogen, and 2.05 mol carbon. What is the empirical formula of the unknown compound?

A bowling ball sits still on a table. which statement is most correct

What does ""electron density in a particular tiny volume of space"" mean?

What scientists do that is the basis for there investigation

A reaction is zero order in a reactant. Which best describes what happens to the rate if the concentration of that reactant is cut in half? a: The rate changes to twice the original rate. b: The rate changes to one-half the original rate.

How many moles of hydrogen atoms are there in 1 mole of C6H12O6 molecules?

Which condition will release more energy when an electron changes levels? From n = 4 to n = 3 from n = 3 to n = 2 from n = 2 to n = 1

What happens when an electron moves from a higher energy level to a lower one