habibaazimi habibaazimi

03-04-2020
Chemistry

contestada

How many Neutrons does Calcium have if it has 20 electrons and an atomic number of 41?

Respuesta :

03-04-2020

Calcium has 21 Nuetrons, because 41 - 20 = 21

Answer Link

Otras preguntas

How do you simplify (x+9)(x-9)

The ratio of the present ages of Reshma and Rekha is 2:3.After how many years,the ratio of their ages will be 5:7?

can someone pls help with this, I would appreciate it

1. cordless power drill 2. car 3. microwave oven 4. cell phone 6. sun 7. solar powered flood light 8. corded pencil sharpener a. nuclear---light----thermal ener

For each of the following 1.Plane Mirror 2.Concave Mirror 3.Convex Mirror 4.Thin Concave Lens 5.Thin Convex Lens Draw the 2 Ray Diagrams for each of the above w

Activity 2: Careers and Career Choices 2.1. In a tabular format list, the institutions of higher learning and qualifications obtained at these different higher

Sangita has deposited rs 1,00,000 in a commercial bank for 2 years at the rate of rs 5 interest per annum for rs 100. The ages of her elder daughter and younger

Give a brief description of strain theory.

1. cordless power drill 2. car 3. microwave oven 4. cell phone 6. sun 7. solar powered flood light 8. corded pencil sharpener a. nuclear---light----thermal ener

what is the approximate value of 9/11-4/9