Moisesp345
Moisesp345
02-10-2020
Chemistry
contestada
What is the mass number of the atom shown?
Respuesta :
legoshes
legoshes
02-10-2020
Answer:
21
Explanation:
Formula;
Mass number = number of protons + number of neutrons
= 9 + 12
= 21
Answer Link
VER TODAS LAS RESPUESTAS ( 26+ )
Otras preguntas
Washington, Jefferson, or Jackson: Which administration made or failed to make the United States more democratic?
Use the triangle on the right and show work pleaseeewill mark brainliest
Allie and Lilly went shopping. They have $95 to spend on a new dresses for the school dance. They already spent $15 on jewelry. If they want matching dresses th
which phase of the writting strategy do students decide on a topic or angle
A proton travels through uniform magnetic and electric fields. The magnetic field is in the negative x direction and has a magnitude of 2.66 mT. At one instant
Rewrite this point-slope form equation in slope-intercept form. y - 3 = -2 (x + 4) y = - 2x + 7 y = -2x – 5 y = - 2x – 11 y = - 2x + 1
15 pts. Topic experiment of rate of reaction. answer with explanations. don't answer bad things or wrong you would be reported.
Can you please help me with this?
How did you get the light to shine? in science
whats the answer? a. -99/20 b. 99/20 c. 44/45 d. -44/45
