John dalton proposed a theory that all matter is made up of individuals particles which cannot be divided. what were those particles?

How do the ionic radii vary within a group of metals how do they vary within a group fo nonmetals?

Show You Know It: Mole Relationships How many moles of alanine, C3H7NO2, are there in 159g of alanine? Alanine's molar mass is 89.1g/mol 022 x 1023 for Avogadro's number Number • Molar Mass Mes

Which term best describes the rate at which global erosion takes place

Calculate the concentration of oxalate ion (c2o42-) in a 0.175 m solution of oxalic acid (c2h2o4). [for oxalic acid, ka1 = 6.5 * 10-2, ka2 = 6.1 * 10-5.]

Which organism is a prokaryote? A. bacterium B. paramecium C. hippopotamus D. strawberry plant

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon

Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons Neutrons are in motion around a nucleus that contains protons and electrons Protons are in