Humpty Dumpty weighs 400 Newtons. He falls off a wall 3 m high. How much work was done by gravity on Humpty Dumpty?

Is 2AI + 3O2 = 2AI2O3 balanced or unbalanced?

What does paranthasis mean on an ion

If 4.52 moles of Na react with an excess of water, how many grams of H2 are formed?

characteristic do many protists share with bacteria and archaea?

Why does increasing the temperature of a reaction cause the reaction rate to increase?

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?

How many litres of 0.215 m NaCl contains 4.30 mol of this salt? Assume this solvent is H2O I'm confused on this question because little m is molality but when I looked this up on google, someone solved the problem assuming it was molarity

How can a neutral atom become a positively-charged particle?

The last column of the periodic table contains the noble gases, elements that do not easily form chemical bonds.

When pollution is removed from the air by a natural process, it