Lithium and potassium have similar chemical properties because the atoms of both elements have the same

(1) mass number

(2) atomic number

(3) number of electron shells

(4) number of valence electrons

What type of cleaner is appropriate for grease that has built up on appliances?

Some amount of water is evaporated from a 2.0 L, 0.2 M NaI solution, to from a 1.0 L solution. The molar mass of NaI is 150 g/mol. What is the final concentration of NaI solution in

10. The number of protons in an atom is determined by the? a. Symbol b. Atomic mass c. atomic number d. group or period

Which of the following would be the best name for MgCl2?

According to Bohr's model of the hydrogen atom, what determines the energy of an electron? A. the radius of its orbit B. the direction of its orbit C. the stability of its orbit

Copper (cu) is a transition element used in the making of coins. calculate the mass in grams of 0.0420

In 1864, the Solvay process was developed to make soda ash. One step in the process is represented by the balanced equation below.

A chemist must prepare of aqueous potassium permanganate working solution. He'll do this by pouring out some aqueous potassium permanganate stock solution into a graduated cylinder and diluting it with distilled water.

What is the best name for the molecule below? a compound with 10 total carbons with a double bond and the rest single bonds.

What Word means the gradual change and build up of organisms in an enviroment