Potassium has a mass number of 40 and an atomic number of 19. how many protons does it have?

What is the value of ∆G in a spontaneous reaction? less than 0 greater than 0 equal to 0 equal to 1

What is a example of a molecule of a single element

How many moles of oxygen are needed to make 6.50 moles of magnesium oxide?

Enter ionic and net equations: feso4 (aq) + na3po4 (aq) arrow fe3 (po4) 2 (s) + na2so4 (aq)

Which organic compound is produced when three fatty acid molecules bond to one glucose molecule?

A chemical engineer is developing a process for producing a new chemical. One step in the process involves allowing a solution of potassium hydroxide to react with a solid. Which action would most likely increase the reaction rate for this step?

Determine which elements are balanced and unbalanced for each chemical equation below when every compound is given a coefficient of one.

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is salt and Solution B is salt. She wants to obtain ounces of a mixture that is salt.

Reactions that affect the nucleus of an atom are called? A. Fusions B. Radioactive decays C. Nuclear reactions D. Fissions

The amplitude of a wave is most directly related to what wave characteristic? Crest length Frequency Wavelength Wave height