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
masya89 [10]
2 years ago
15

You want to plate a steel part having a surface area of 160 with a 0.002--thick layer of lead. The atomic mass of lead is 207.19

. The density of lead is 11.36 . How many atoms of lead are required
Engineering
1 answer:
Pepsi [2]2 years ago
3 0

Answer:

<u><em>To answer this question we assumed that the area units and the thickness units are given in inches.</em></u>

The number of atoms of lead required is 1.73x10²³.    

Explanation:

To find the number of atoms of lead we need to find first the volume of the plate:

V = A*t

<u>Where</u>:

A: is the surface area = 160

t: is the thickness = 0.002

<u><em>Assuming that the units given above are in inches we proceed to calculate the volume: </em></u>

V = A*t = 160 in^{2}*0.002 in = 0.32 in^{3}*(\frac{2.54 cm}{1 in})^{3} = 5.24 cm^{3}    

Now, using the density we can find the mass:

m = d*V = 11.36 g/cm^{3}*5.24 cm^{3} = 59.5 g

Finally, with the Avogadros number (N_{A}) and with the atomic mass (A) we can find the number of atoms (N):

N = \frac{m*N_{A}}{A} = \frac{59.5 g*6.022 \cdot 10^{23} atoms/mol}{207.19 g/mol} = 1.73 \cdot 10^{23} atoms    

Hence, the number of atoms of lead required is 1.73x10²³.

I hope it helps you!

You might be interested in
Looking back, I was sure that I was going to die that November afternoon. Tornado watches in Alabama are as common as eggs are f
yKpoI14uk [10]
The author uses forshawdow in this passage
4 0
3 years ago
Read 2 more answers
Request for proposal (RFP) is a type of document that contains the information and proposals mostly through the bidding process.
Art [367]

Answer:

Answer to the following is as follows;

Explanation:

A request for proposal is a documentation that invites prospective contractors to submit business opportunities to an agency or corporation interested in procuring a commodities, product, or valuable resource through a bid procedure.

A request for proposal (RFP) is a commercial document that introduces a project, defines it, and invites eligible contractors to compete on its completion.

8 0
2 years ago
System Integration summary
kenny6666 [7]

Answer:

System integration can be defined as the progressive linking and testing of system components to merge their functional and technical characteristics into a comprehensive interoperable system.

Explanation:

....

6 0
2 years ago
2x²-6x+10/x-2 x=2<br><br><br>plsssss<br><br><br><br>​
aleksandr82 [10.1K]

Answer:

hope it helps you..

5 0
2 years ago
Many households in developing countries prepare food over indoor cook stoves with no ducting system to exhaust the combustion pr
lorasvet [3.4K]

Answer:

   C = 0.22857 ng / m³

Explanation:

Let's solve this problem for part the total time in the kitchen is

          t = 2h (60 min / 1h) = 120 min

The concentration (C) quantity of benzol pyrene is the initial quantity plus the quantity generated per area minus the quantity eliminated by the air flow. The amount removed can be calculated assuming that an amount of extra air that must be filled with the pollutant

amount generated

         C = co + time_generation rate / (area_house + area_flow)

         C = 0.2 + 0.01 120 / (40+ 2)

         C = 0.22857 ng / m³

7 0
3 years ago
Other questions:
  • How do i get my camera to work in the app, i just got a new phone and it won’t pull up the camera
    14·1 answer
  • Technician A says that when using an impact wrench to remove a bolt from the front of an engine's crankshaft, the crankshaft mus
    15·1 answer
  • A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while theprototype
    8·1 answer
  • Air in a rigid tank is initially at 320 K and 130 kPa. Heat is added until the final pressure is 438 kPa. What is the change in
    9·1 answer
  • Suppose that tank holds 1% liquid water by volume and 99% vapor water by volume at a temperature of 185oC. What is the quality?
    10·1 answer
  • PLEASE HELP!!!!!!!!!!!!!!!!!!!!! I AM BEING TIMED!!!!!!!!!!!!!!!!!!!!!! 30 MINUTES LEFT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    7·2 answers
  • Omplete the following program: [0.5 X 4 = 2]
    11·1 answer
  • .If aligned and continuous carbon fibers with a diameter of 6.90 micron are embedded within an epoxy, such that the bond strengt
    11·1 answer
  • A dual-fluid heat exchanger has 10 lbm/s water entering at 100 F, 20 psia and leaving at 50 F, 20 psia. The other fluid is glyco
    13·1 answer
  • PLS HELP! which statement is the best example of how society affects the useof technology? A. Farmers in hilly areas grow crops
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!