What determines the mass number of an element?

the number of protons minus the number of electrons

the number of protons

the total number of protons, electrons, and neutrons

the total number of neutrons and protons

Aluminum sulfate is formed when an aluminum cation that has a 3 + charge combines with a sulfate ion that has a 2 - charge. Write the formula for the compound aluminum sulfate. Font Sizes

What is the correct formula of calcium fluoride

Apply the given electronegativities to each bond in the examples below to see which are polar and which are nonpolar. Multiple bonds are treated the same as single bonds. H-O-H O-C-O H-C-N

Which of the following is an example of energy causing motion? A. bowling ball on a ball stand B. boy holding a bowling ball C. rolling ball scattering the bowling pins D. Bowling pins scattered on the ground

Not related to any subject but how do you tell someone you like them?

Henry's law states that the solubility of a gas is directly proportional to its partial pressure, LaTeX: S_g=k/cdot P_gS g =

Lord kelvin described the concept of absolute zero temperature and the laws relating the change in thermal energy during chemical reactions. whaty type of chemist would be be considered todayh

What is the subscript for oxygen in its molecular formula

Over time, an iron nail reacts with water to produce iron oxide, or rust. Which of the following is a signal that rusting has taken place?

A statement of the first law of thermodynamics is that: A. the total energy of the universe is constant. B. in a spontaneous process, the entropy of the universe increases. C. the total energy of the universe is always decreasing. D.