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
Nimfa-mama [501]
3 years ago
7

A large cyclotron directs a beam of He++ nuclei onto a target with a beam current of 0.250 mA. (a) How many He++ nuclei per seco

nd is this? (b) How long does it take for 1.00 C to strike the target? (c) How long before 1.00 mol of He++ nuclei strike the target?
Chemistry
1 answer:
nikitadnepr [17]3 years ago
8 0

Answer:

a. 7.8*10¹⁴ He⁺⁺ nuclei/s

b. 4000s

c. 7.7*10⁸s

Explanation:

I = 0.250mA = 2.5 * 10⁻³A

Q = 1.0C

1 e- contains 1.60 * 10⁻¹⁹C

But He⁺⁺ Carrie's 2 charge = 2 * 1.60*10⁻¹⁹C = 3.20*10⁻¹⁹C

(A).

No. Of charge per second = current passing through / charge

1 He⁺⁺ = 2.50 * 10⁻⁴ / 3.2*10⁻¹⁹C

1 He⁺⁺ = 7.8 * 10¹⁴ He⁺⁺ nuclei

(B).

I = Q / t

From this equation, we can determine the time it takes to transfer 1.0C

I = 1.0 / 2.5*10⁻⁴ = 4000s

(C).

Time it takes for 1 mol of He⁺⁺ to strike the target =?

Using Avogadro's ratio,

1.0 mole of He = (6.02 * 10²³ ions/mol ) * (1 / 7.81*10¹⁴ He ions)

Note : ions cancel out leaving the value of the answer in mols.

1.0 mol of He = 7.7 * 10⁸s

You might be interested in
Natasha and Reanna observe a large airplane in the troposphere. Which experimental setup below would best determine how changing
snow_lady [41]

Answer:

i am pretty sure the answer is a

Explanation: because the airplane's flight time has to be the independent variable for it to affect the dependent variable that is the speed of how fast the airplane is going.

8 0
3 years ago
Read 2 more answers
jenny dissolves as much salt as she can in 100mL of room temperature water. she learned in class that less salt will dissolve in
Slav-nsk [51]

Answer:

if ice is added more salt can be dissolved ...........

5 0
2 years ago
Read 2 more answers
Help would be much appreciated, I'm being timed<br> I'll mark brainliest !!
Vitek1552 [10]
Group 17

Please brainliesttt
7 0
3 years ago
Which of the following statements is true?
VikaD [51]

The answer is likely to be A

7 0
3 years ago
Read 2 more answers
Which is the correct name for the comound N2O3
ivann1987 [24]
Dinitrogen trioxide is the compound N2O3. :)
3 0
3 years ago
Read 2 more answers
Other questions:
  • How many kj of heat are needed to completely vaporize 3.30 moles of h2o?
    8·1 answer
  • Complete and balance the following reaction. Zinc loses two electrons to form an ion. What type of reaction does this equation r
    5·2 answers
  • which of the following is true ? soil forms from weathered rocks and organic materials. fertile soil usually forms in areas with
    5·1 answer
  • For a titration of 25 ml of naoh solution, 23.30 ml of hcl solution if used. what is the molarity of naoh
    7·1 answer
  • A sample of lead has a density of 11.3 g/cm3 and a mass of 123 grams, what is the volume of the sample?
    8·1 answer
  • Points
    6·1 answer
  • Write the conventional, total ionic, and net ionic equations for Mg(s)+H2O(l)
    8·1 answer
  • Balance the following:<br> CsH12 +<br> 02<br> CO2+<br> |<br> H20
    9·1 answer
  • Which would lower the reaction rate?
    12·1 answer
  • Explain why it is important to eat the wet sand before heating the iron wool​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!