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
Nikolay [14]
3 years ago
12

The total negative charge on the electrons in 1kg of helium (atomic number 2, molar mass 4) is____________.

Physics
2 answers:
tekilochka [14]3 years ago
4 0

Answer:

Explanation:

n = \frac{m}{M}

n = \frac{1000}{4}

         = 250 moles.

    N  = n×6.02×10^{23}

        = 1.505×10^{26}

Total charge = (1.505×10^{26}) × (1.6×10^{-19})

                     = 2.4×10^{7} C.

vazorg [7]3 years ago
3 0

Answer:

Number of electrons=2

charge of an electron, e=1.6*10^-19

Q=ne     Q=2*1.6*10^-

-19

m=1kg=1000g

n=m/M=1000/4=250

N=nL

N=2*1.6*10^-19*250*6.02*10^23

N=4.8*10^7 C

Explanation:

You might be interested in
Which of the following is made up of vibrating electric and magnetic fields
hichkok12 [17]
A i think
hope it helps!!:)))
4 0
3 years ago
Read 2 more answers
What are the fundamental units involved in pascal<br>​
Llana [10]

Answer:

<h2>FUNDAMENTAL UNITS INVOLVED ARE : NEWTON AND SECOND .</h2>

<h2>FORMULA OF PRESSURE = </h2>

<h2>P=F/A </h2>

4 0
3 years ago
Read 2 more answers
A project is located in an area with a demand-response program and on a site that has enough room for a wind-turbine to allow fo
Ksju [112]

Answer:

A. The project's energy costs will decrease

Explanation:

Since the project is located in an area with a demand-response program and on a site that has enough room for a wind-turbine to allow for on-site renewable energy.

Hence, the project's energy costs will decrease very well because it's implementing both of these strategies;

- Area with demand-response program.

- On-site renewable energy.

5 0
3 years ago
A spring stretches 0.2 cm per newton of applied force. An object is suspended from the spring and a deflection of 3 cm is observ
siniylev [52]

Answer:

m=1.53kg    

Explanation:

To solve this problem we use the Hooke's Law:

F=k*\Delta x     (1)

F is the Force needed to expand or compress the spring by a distance Δx.

The spring stretches 0.2cm per Newton, in other words:

1N=k*0.2cm ⇒ k=1N/0.2cm=5N/cm  

The force applied is due to the weight

F=mg

We replace in (1):

mg=k*\Delta x  

We solve the equation for m:

m=k*\Delta x/g=5*3/9.81=1.53kg    

7 0
3 years ago
Does exists the friction force in space?If yes,tell an full example
VashaNatasha [74]
Yes, friction does exist in space. Friction has nothing to do with the earth's atmosphere. It exists everywhere in the universe. <span />
5 0
3 years ago
Other questions:
  • What is the speed of sound in dry air at 0°C? A. 316 meters/second B. 331 meters/second C. 346 meters/second D. 373 meters/secon
    14·2 answers
  • Which of the following is an accurate statement?
    12·1 answer
  • Aunt Matilda goes to a well and throws a penny straight down the well at 3.0 m/s. She hears a splash after 0.5 seconds. How deep
    6·1 answer
  • An oxygen atom picks up two additional, free floating electrons. Is the charge of the newly formed oxygen ion positive, negative
    5·2 answers
  • If an object is 413 Kg in mass and 640 M3. What is the density? Will It Float?
    15·1 answer
  • PLEASE HELP
    9·2 answers
  • You can take your heart rate for 6 seconds and multiply by 10 to get the 60 second count quickly during
    13·1 answer
  • Can anyone pls help me with this I’ll appreciate it. I’m trying to study for a test but I don’t know the answer to this.
    11·1 answer
  • The normal formula to find force is F = m*a. What kind of math do you need to do
    7·1 answer
  • Echoic sensory memory is used when a lightning bolt flashes across the sky. please select the best answer from the choices provi
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!