jgsdjfkklfj7025 jgsdjfkklfj7025

01-06-2018
Chemistry

contestada

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

Respuesta :

01-06-2018

19. The atomic number is the same as protons and electrons unless it have a - or a + charge the electrons are going to change

Answer Link

Otras preguntas

Which is a sentence fragment? A. This morning the sunrise was spectacular. B. We bought milk, bread, and eggs. C. A pencil, four sheets of paper, and a rule

what is the average of the first 50 even numbers?

What is the term used to describe a person who served a ruler or prince? a. courtier b. Renaissance man c. humanist d. sprezzatura

Which of the following is a characteristic of a nation? a sovereign government a large population a strong economy an official language

Because art is ____________, people sometimes disagree about whether something is a work of art. (Select the best answer.) a. imaginative b. Creative c. subj

Find the missing number in the patter explain your reasoning 12,24,72,288

what is the place value of 1 in the number 0.413

Explain how the value of the 7 in 327,902 will change if you move it to the tens place

An endemic disease is best described as a disease that __________. a. rarely affects a specific place or group of people b. is characteristic of a specific pl

Democracy was first practiced in which part of the world?