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
liraira [26]
3 years ago
7

What shows how many molecules there are of a chemical formula? ​

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0

Answer:

no of moles = mass / molar mass

1 mole = 6.02 *10^23 molecules

I don't know if that helped

You might be interested in
The bacteria starts at 2million.The doctor prescribes an antibiotic that reduces the bacteria population to 1/4 of its size each
Bogdan [553]

i think its B but iam not sure

8 0
2 years ago
What is 3x-4y=4 using substitution method
andreev551 [17]

Answer:

y=3x/4 - 1

Step-by-step explanation:

6 0
3 years ago
Martina needs to make a total of 40 deliveries this week. so far she has completed 12 of them. what percentage of her total deli
Luda [366]

Answer: 10 percent

Step-by-step explanation:

because she was supposed to do 40 she did only 12 so it is 10%

7 0
3 years ago
Ryan wants to use the Fermi process to estimate the number of basketballs that would fill a gymnasium. As part of the process, h
Westkost [7]
A basketball is the shape of a sphere.

The volume of a sphere is given by

V= \frac{4}{3} \pi r^3

Given that the diameter of the basketball is 10 in., thus the radius is 10 / 2 = 5 in.

Thus, the volume of the basketball is given by

V= \frac{4}{3} \pi(5)^3 \\  \\ = \frac{4\times125}{3} \pi=523.6\ in^3

Therefore, The best approximate of the volume of the basketball is 5\times10^2\ in^3
3 0
2 years ago
Use the elimination method to find all solutions of the system:
weqwewe [10]

Answer:

x = 3    and    y = 4

Step-by-step explanation:

Given

[Correct Question]

x^2 - 2y = 1

x^2 + 5y = 29

Required

Solve using elimination

First, we eliminate x.

Subtract equation (1) from (2)

x^2 - x^2 + 5y - (-2y) = 29 - 1\\

5y - (-2y) = 28

5y +2y = 28

7y = 28

Divide through ny 7

y = 4

Take x^2 - 2y = 1

Make x^2 the subject

x^2 = 1 + 2y

Substitute 4 for y

x^2 = 1 + 2*4

x^2 = 1 + 8

x^2 = 9

Take square roots

x = \sqrt 9

x = 3

7 0
2 years ago
Other questions:
  • Your grandmother gave you 1.62 with which to buy a present this cover two out of three of the cost how much did the Present cost
    5·1 answer
  • Can someone help me please?
    10·1 answer
  • Which function is the inverse of f(x) = 2x + 3
    13·1 answer
  • Please help I don't understand this thank you
    5·1 answer
  • PEMDAS PLEASE HELPPPP!
    6·1 answer
  • Solve 3 ^ (x - 8) = 8 for x using the change of base formula logb y = (log y)/(log b)
    5·2 answers
  • Calculate the quotient.
    10·1 answer
  • Evaluate the logarithm log8 8
    7·1 answer
  • Find the derivative<br>g(t)=7t4 –4t3 +6t2 +9t–19
    12·1 answer
  • Given PRQ = XYZ, sketch a diagram and state all corresponding sides and angles.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!