1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Deffense [45]
2 years ago
7

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?

Chemistry
1 answer:
USPshnik [31]2 years ago
7 0

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

You might be interested in
What is the difference between a halogen and a halide?<br><br> need help urgently!
lina2011 [118]

Answer:

In context|chemistry|lang=en terms the difference between halogen and halide. is that halogen is (chemistry) any element of group 7, ie fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal while halide is (chemistry) a salt of any halogen acid.

Explanation:

5 0
3 years ago
Read 2 more answers
1. Which of the following correctly represents a balance chemical equation? (a) NaCl + 2H2O → 2NaOH + 2Cl2 + H2 (b) 2NaCl+H2O →
butalik [34]

Answer:

thx sa points

Explanation:

8 0
2 years ago
The following charges on individual oil droplets were obtained during an experiment similar to Millikan's. Determine a charge fo
RSB [31]

Answer:

- 1.602 x 10⁻¹⁹coulombs

Explanation:

Charge on individual oil droplet would be multiple of charge on one electron . So we will find out the minimum common factor of given individual charges that is the LCM of all the charges given.

LCM of given charges like 3.204 , 4.806 ,8.01 and 14.42 . We have neglected the power of ten( 10⁻¹⁹)  because it is  already a common factor to all.

The LCM  is 1.602 . So charge on electron is 1.602 x 10⁻¹⁹.

4 0
3 years ago
Will marks brainly if it isn’t a copied answer!!!
Neporo4naja [7]

What kind of control like scientific?

5 0
2 years ago
Read 2 more answers
How many moles is 2.2 x 1023 atoms of Fe?
kow [346]

Answer:

it's 3.77 moles

Explanation:

Pls give brainliest :)

4 0
2 years ago
Other questions:
  • Which statements describe how stars are born? Check all that apply. Stars are born in clouds of gas and dust called nebulas. The
    7·2 answers
  • (25 hours ) /1 ( minutes) = ( hour )
    14·1 answer
  • Which of the following atoms:
    15·1 answer
  • The following questions are about ethyl bromide,n-propyl bromide, isopropyl bromide,t-butyl bromide, &amp; neopentyl bromide
    11·1 answer
  • Based on the description of geothermal energy, how does magma convection aid in the production of geothermal energy?
    15·2 answers
  • What is the chemical composition of acid rain?
    12·1 answer
  • Look closely at the rock cycle above. Imagine this rock forms just outside of the igneous intrusion at step D.
    7·1 answer
  • __________ is unchanged when a solution is diluted by the addition of solvent
    11·1 answer
  • Avogadro’s law and Charles’s law describe a proportionality of the volume of a gas when the pressure is constant. Which describe
    10·1 answer
  • All three types of rock form in which earth layer?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!