Which scientist discovered that atoms contain electrons?

Identify that stereo isomers of the complex [Ni (NH3) 2Br2]

How is it possible for a compound to both have ionic and covalent bonds

Which of the following observations would indicate that a material is a pure substance? It does not dissolve in water. It changes color after heating. It cannot be physically broken down into different types of atoms.

What is the total number of valence electrons in a sulfide in th ground state?

The period of a sound 440-Hertz sound wave is how many second/second.

What would the charge be on an atom with 9 protons 9 electrons and 10 neutrons

PH + pOH = 14. What is the hydroxide concentration of a solution with pH of 8?

A student Increases the temperature of a 417 cubic centimeter balloon from 278 K to 231 K. Assuming constant pressure what should the new volume of the balloon be

What is the molarity of a solution with 1.17 moles of Ca (OH) 2 disolved in 0.2 liters of water? A. 1.17 M B. 0.2 M C. 0.17 M D. 5.85 M

What happens to acetone molecules when you add heat to a beaker of liquid acetone?