How many neutrons does element X have if its atomic number is 39 and its mass number is 79?

A taxable explanation that's supported or refute it is called an

Which provides the best analogy for an electron in an atomic orbital? A. a bee moving from flower to flower in a garden B. a bird resting on a tree branch C. an ant crawling on the surface of a leaf D. a bee trying to escape from a closed jar

How many electrons does it take to make 80 μc (microcoulombs) of charge?

How are electrons arranged in an atom

What is the kinetic energy of an automobile with a mass of 1273 kg traveling at a speed of 12 m/s? answer in units of j?

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.

Does sound move as a longitudinal or transverse wave in a medium?

Which configuration would produce an electric current? a. Rotate a coil of copper wire between two magnets. b. Connect a wire between a copper and zinc strip sitting in a beaker of water. c.