25-04-2020
Chemistry

contestada

the atomic number of Re is 75. The atomic mass of one of its isotopes is 186. How many neutrons are in an atom of this isotope?
A. 75
B.111
C. 186
D. 261

Respuesta :

SvetkaChem SvetkaChem

25-04-2020

Answer:

B.111

Explanation:

Atomic mass = number of protons(or atomic number) + number of neutrons

186 = 75 + number of neutrons

number of neutrons = 186 -75 = 111

Answer Link

muffordk768 muffordk768

13-11-2020

Answer:111

Explanation:

Answer Link

Otras preguntas

What substance provides energy or helps form body tissues? A. Nutrition B. Nutrient C. Carbohydrates D. Proteins

please answer fast???????????

QUICKLY PLEASE Triangle A’B’C’ is the image of triangle ABC. On a coordinate plane, triangle A B C has points negative 4, negative 1), (negative 5, negative 5)

What is the volume of the cone? 6 cm 14 cm

Which is the best example of a vivid sensory detail?

The first equation from the system of equations is graphed. Graph the second equation to find the solution of the system of equations. y = –x, y = 2x + 6 Wha

Answer my question ¿cómo estás hoy?

Find the point-slope equation of the line using the point (5, 3) and slope 3/2

Evaluate the expression 9/225

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.