dtgarcia928 dtgarcia928

13-10-2020
Chemistry

contestada

an atom has 79 protons, 78 electrons and a mass number of 118. how many neutrons does this atom have

Respuesta :

Justtdoingwork Justtdoingwork

21-10-2020

Answer:

39

Explanation:

Electrons weigh almost nothing, so their mass doesn't really matter for these types of problems. Just subtract 118-79 to find the remaining mass which is for the neutrons.

Answer Link

Otras preguntas

Nina has the flu and a high fever. Choose the terms that correctly complete the sentences. Nina has the flu and a high fever. Her immune system is exhibiting th

13^2 * 5^2 - 10^2 *6^2 = ?

¿Hicistie tu malatya Ayer? A. Sí , hice mi maletas ayee B. Sí, hizo mi maleta ayer C. Sí , hago mi maleta ayee D. Sí, have mi maleta ayer

what did scientist observe when they studied the magnetic fields of rocks on the sides of mid ocean ridges?

Rewrite log₅(x+3) into an equivalent expression using only natural logs

What are the solutions to the equation? х^2 + 6x = 40

Is this positive or negative

If the m∠SRW = 85°, what are the measures of ∠VRU and ∠URW? m∠VRU = ° m∠URW = °

in literature, what is tone

Which statements are true about the graph of the function h(x) = -5x2 + 60x - 200? Select three options. The axis of symmetry is the line x = -6. The graph of h