What is the number of moles of hydrogen that is needed to produce 0.253 mol of water

A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?

When 35 g of a metal at 94 ◦c is added to 51 g of water at 22 ◦c, the temperature of the water rises to 27 ◦c. what is the specific heat capacity of the metal?

President Nixon promised over $3 billion in economic aid to North Vietnam after the war. a. true b. false

Which of the following choices is the most conclusive in determining whether a chemical reaction has taken place?

What causes red giants expand to become larger than main-sequence stars?

If you can choose any animal in the world to be, what animal would you choose. (I'd be a wolf or a dog, mostly a wolf)

Determine the molecular geometry about each interior nitrogen atom of n2h4.

When all of the bulbs in the parallel circuit were first lit, did they all illuminate equally?

1. Electronegativity is the ... a. amount of energy required to remove the most loosely bound electron from an atom. b. tendency of an atom to lose an electron to another atom. c.

What can the particles of a liquid do that the particles of a solid can't do?