The atomic number of an element is equal to the number of protons in each atom of the element. All helium atoms have 2 protons. What is the atomic number of helium?

IS orange juice a solid liquid or gas and why

Calculate the pH of a blood plasma sample with a total CO 2 concentration of 25.6 mM and bicarbonate concentration of 24.5 mM. The relevant p K a of carbonic acid is 6.1. Enter the answer with three significant figures.

Are they ionic compound, covalent compound, or acid -pb (BrO3) 2 -P4O10 -BaBr2 -zn (C2H3O2) 2 -Cul -Kc103 -H3PO3 -Pcl5 -HBrO4 - Al2 (CO3) 3 - Na2S2O3 - Hg2Cl2 - Cs2O2 -Sn3 (PO3) 2

The element found naturally in the earth that has the heights atomic number is

Compared to the mass and the penetrating power of an alpha particle, a beta particle has? 1) Less mass and greater penetrating power 2) less mass and less penetrating power 3) more mass and greater penetrating power 4) more mass and less penetrating

Constance is making a vegetable soup that contains carrots, beans, water, salt, pepper, bits of ham, and onions. the soup has to cook for 4 hours. while the soup is cooking, what will happen to some of the minerals that are in its ingredients?

Which of the following form solid solutions? Select all that apply. naturally occurring minerals gases present in air HCl and water sugar and water metal alloys

Alan's go-kart travels 1750 feet per minute, and Barry's go-kart travels 21 miles perhour. Who's go-kart travels faster?

What needs to happen for a solute to dissolve in a particular solvent? A) the attractions between the solute and solvent molecules must be greater than the attractions keeping the solute together and the attractions keeping the solvent together.

Which is a conversion factor for this statement of equality: 12 in. = 1 foot? 12 feet1 in. 12 feet 1 in. 1 in. 12 feet 1 in. 12 feet 1 foot12 in. 1 foot 12 in. 1 foot1 in. 1 foot 1 in.