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
Sergeeva-Olga [200]
3 years ago
8

How many atoms are there in 3.4moles if helium ,show the calculation

Physics
1 answer:
prohojiy [21]3 years ago
6 0
Answer: 20.4752789138x x  10^23 atoms
To count how many atoms in moles you need to know Avogadro's number. Avogadro's number dictate that for every mole there is 6.022140857 × 10^23 molecule/atoms.
Then 3.4 moles of helium will be 3.4x 6.022140857 x  10^23 atoms= 20.4752789138x x  10^23 atoms
You might be interested in
HELP QUICK WILL MARK AS BRAINLEST!!!
ohaa [14]
The answer is c hope it helps
8 0
3 years ago
Calculate the velocity of an apple that falls freely from rest and drops for 3.5 seconds.
padilas [110]

Answer:

initial velocity(u)=0

time(t)=3.5sec

acceleration (a)=9.8m/s²

final velocity (v)=?

Explanation:

we have

v=u+at=0+9.8×3.5=34.3m/s

6 0
2 years ago
An uniform electric field of magnitude E = 100 N/C is oriented along the positive y-axis. What is the magnitude of the flux of t
Ede4ka [16]

Answer:

The magnitude of the flux of electric field through a square of surface area is zero.

Explanation:

E=100 NC^{-1}\\\\A=2 m^2\\\\Electic\,\,flux\,\,flux\,\,is\,\,given\,\,as:\\\\\phi_E=E.A\,cos\,\theta

It is given that square box is parallel to yz-plane which has normal vector perpendicular to plane in x-direction. Angle between normal vector of area and electric field is 90°. Substituting in (1)

\phi_E=E.A\,cos\,(90^o)\\\\\phi_E=0

4 0
3 years ago
Which statement accurately describes science?
slava [35]
Answer: We don’t really ever need to know how to dissect a frog but hey, one day maybe I’ll need to give a frog a discectomy
5 0
3 years ago
Work is the transfer of _______ that occurs when a force makes an object move.
Vlad1618 [11]
I think it is energy
4 0
3 years ago
Other questions:
  • In musical language, mezzo forte (mf) signals that the music's volume should be
    8·1 answer
  • PLEASE ANSWER QUICK!! 3. Fill in the chart below to identify the properties of shape and volume for each type of matter.
    6·1 answer
  • In concept simulation 10.2 you can explore the concepts that are important in this problem. astronauts on a distant planet set u
    14·1 answer
  • Which nutrient is the first (easiest) to be broken down and absorbed for energy use in the body? Water Carbohydrates Fats Protei
    8·1 answer
  • List one way to take advantage of creating even more kinetic energy on this particular technologically advanced field
    14·1 answer
  • Which is the most closely related to the color of an acid-base indicator when dipped into solution?
    6·2 answers
  • Traveling in a circle requires a net force
    9·1 answer
  • PLEASE ANSWER ASAP BEFORE MY TEACHER AND MY MOM KILLES ME PLEASE ASAP
    15·2 answers
  • Neon has 3 naturally occurring isotopes, Neon-20, Neon-21, and Neon-22. Neon's average atomic mass on the periodic table is 20.1
    8·1 answer
  • Task: At the end of the lesson you will be asked to develop a final writing assignment on the environmental problerns
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!