danny6718 danny6718

16-01-2018
Chemistry

contestada

What is the total number of protons in the nucleus of calcium -42?

Respuesta :

skylajohnston skylajohnston

25-01-2018

Since the atomic number of calcium is 20. The number of protons is also 20.

Answer Link

Otras preguntas

Why does the cyclops live alone in a cave

Jessie has never seen snow, but today the weather conditions may be just right! He knows the temperature on the Fahrenheit thermometer must be _______ degrees o

Necesito sacar los adjetivos de este texto. Yellowy-green field that finds its complements in green-gold stand of larches and the five shades of gray in the ne

A survey found that 25% of pet owners had their pets bathed proffesionally rather than doing it themselves. If 18 pet owners are randomly selected, the probabil

How did the increased availability of atmospheric oxygen affect the evolution of the eukaryotic cell?

Wendell is a great surfer, but he never considers surfing as a career. Instead he goes into accounting, for which he has no real passion. Wendell is exhibiting

Johnny is growing "tomatoes" in a light chamber in his dorm closet. some are given red light, some are given green light, and some are given blue light. under w

2. Quadrilateral ABCD is inscribed in a circle. Find the measure of each of the angles of the quadrilateral. Show your work Would the measure of angle B be x fo

In the figure to the right, ABCD is a rectangle. Find the area of △ABC, if the area of △AOD is 10.

A substance with a hardness of 8 will scratch a substance with a hardness of 7.