nikiyah nikiyah

03-09-2020
Chemistry

contestada

What is the mass number of an
atom which contains 21 electrons,
21 protons, and 24 neutrons?
21
66
42
45

Respuesta :

coxliberty2003 coxliberty2003

14-09-2020

Answer:

66 i think

Explanation:

because i add 21+21+24=66

Answer Link

Otras preguntas

Please help me form a paragraph! (En espanol)

What is the enlightenment? Think of the Enlightenment in the broad sense of the word as the intellectual trend that includes all of the authors we have covered

For several weeks, the function f(x) = 3(4) * represented the number of birds infected with an illness x weeks after the first birds became sick. How did the nu

I wanna learn python but I don't know any websites that I can learn it online. Thanks for attention!

Does anyone know what topic this is ?

What efforts have been made in Nepal to produce skilled human resource for the economic and social development of the country?

many tickets_________by mrs hoa tomorrow

a list of our cultural identity

In "The Treasure of Lemon Brown" what did Greg do as he entered his house, knowing that he was about to receive a lecture? A. defend himself B. smile C. slam th

a rectangular plot has 17m length and 14m width. What will be the cost of fencing at a rate of Rs.25 per meter