How many protons does zinc have in its atom?
a. 65
b. 35
C. 30
d. 95

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

Adilute aqueous potassium nitrate solution is

Is a pencil falling to the floor anon contact force, a force, or a contact force