Atom x has an atomic number of 19 and has a mass number of 39. the number of protons in atom x is equal to

Calculate the mass percent (m/m) of a solution prepared by dissolving 45.09 g of NaCl in 174.9 g of H2O.

How is an electromagnet different from a bar magnet? A) Bar magnets have a north and south pole, but electromagnets do not. B) Electromagnets are strong, permanent magnets, but bar magnets are always weaker.

Identify the particles of an atom. positively charged, electron, proton, neutron, and negatively charged.

Sometimes a particle of radiation penetrates a substance and continues on its way, and sometimes it doesn't.

An element's atomic number is 66 how many protons would an atom of this element have

Which atom can bond with each other to form chains, rings or networks? (1) carbon atoms (2) hydrogen atoms (3) oxygen atoms (4) nitrogen atoms

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

The ksp of copper (ii) carbonate, cuco3, is 1.4 * 10-10. calculate the solubility of this compound in g/l.

A 1.0857 gram pure sample of a compound containing only carbon, hydrogen, and oxygen was burned in excess oxygen gas. 2.190 g of carbon dioxide and 0.930g of water were produced. Find the empirical formula of the compound.

Can you solve the anagrams cduopomn yeproprt eeculomc mentag icatreno