Seew4altic5akmock Seew4altic5akmock

28-09-2016
Chemistry

contestada

If an atom has an atomic number of 15 and an atomic mass of 31, how many protons, neutrons and electrons does the atom contain?

Respuesta :

Alligatorteeth Alligatorteeth

12-10-2016

15 protons (atomic number is always the number of protons) 15 electrons because no charge was mentioned so it must be the same as protons 16 neutrons because mass number is the combined number of protons and neutrons

Answer Link

Otras preguntas

how is a county established

The practice of organizing and arranging visual elements on a screen is called __________. A. shot composition B. preproduction C. theory D. drama

Which parallel of latitude formed the southern boundary of the Pennsylvania colony

What elements should an assertion contain?

Fearing an erosion of American sovereignty, the U.S. Senate was unwilling to enter this international peace-keeping organization in the 1920s.

1.)What was the first system of government in Rome? 2.)What replaced this system? 3.)In what ways did the Roman government help the spread of Christianity, de

In “My Last Duchess” by Robert Browning, why did the poet use run-on lines? to express long, complex ideas and emotions to show that the duke prevents the

Martin luther king, jr., was a founder and the first president of the ___.

you buy a bike helmet for $22.26, witch includes 6% sales tax. the helmet is discounted 30% off the selling price, what is the original price

) Which of the following does not occur during pregnancy? a. a woman's respiratory rate and tidal volume increase. b. maternal nutrient requirements increase.