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anonymous
 one year ago
If you were asked to convert 4.2 X 10^22 atoms of aluminum to moles, which of the following should you use for the conversion?
anonymous
 one year ago
If you were asked to convert 4.2 X 10^22 atoms of aluminum to moles, which of the following should you use for the conversion?

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imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 4.2 \times 10^{22}}{ N_{A} }\] N_{A} is the avagadro number

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.11mole of any substance has 6.022 x 10^23 particles of it

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1so 1 mole of Al has 6.022 x 10^23 atoms

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.0well which one of those is true? is 6.023x10^23 atoms of Al equal to 13 moles Al

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1now if 1 mole has 6.022 x 10^23 atom then how many mole will have 4.2 x 10^22 atoms :)

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1can u calculate how many moles will have 1 atom?

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1well just because it has that bad number 26.891... we can't say its wrng we have to give proper reasoning ok we know that 1mole has 6.022 x 10^23 particles we need to find how many moles will have 1 particle so 1st answer this 6 bags have 3 chocolates how many bags will have 1 chocolate?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2What's with the mass of aluminum? The origianl question just want number of moles.

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1ur saying B is correct cause it has got mass/ nvm its ok :)

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2But the original question was just "how many moles is 4.2 x 10^22 atoms".

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2There are 6.023 x 10^23 atoms per mole. You have 4.2 x 10^22 atoms. 4.2 x 10^22 * 1 mole/6.023 x 10^23 atoms

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Or number 4 in your list

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.22.03 X 10^24 atoms * 1 mole/6.023 x 10^23

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Look carefully at my answer. You don't multiply both numbers.

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1number of moles = no of atoms /avagadro number :)

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2I made a graphic which shows the calculation more clearly:

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2okay 1 more question.

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1moles=mass/molar mass molar mass of silver=108

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Remember to learn how to set it up correctly. What if you set it up as 107.9/68.3?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Yes you set it up the right way 68.3/107.9 but you will have to see why.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2The important thing is if you know the correct way to set up the answer because I'm assuming you will be tested on this, right?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2So then you will definitely have to learn how to set up the answer.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Well imqwerty and myself looked at the answers and we're sure they are correct.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Atomic mass of copper = 63.55 meaning there are 6.023 x 10^23 atoms for every 63.55 grams of copper. We need to know atoms in 68.7 grams of copper: 68.7 * 6.023 x 10^23 atoms / 63.55 grams copper = 6.511 x 10^23 atoms which is C which is your answer

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Moles in 125 g of NI atomic mass Ni = 58.71 grams per mole 125 grams * 1 mole / 58.71 grams = 2.129 moles B (which is your answer)

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1#( 1mole of silver=108gm=6.022x10^23 particles \[\frac{ 108\times 5.8 \times 10^{23} }{ 6.022 \times 10^{23}}=mass of (5.8 \times 10^{23})particles\]

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2I'm working on number 8

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2It seems to me you just want correct answers as opposed to HOW to set up the answers. Question 8  your answer is wrong. What is the mass of 25 atoms of mercury? (your answer)

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1yes sofia :) thas correct

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2So what is your answer for #8?

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1np :) sofia can u tell how did u find out the mass

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1nvm :) tell ur method

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Yes it is either B or C for #8

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Did you figure out #8 yet?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Yes it is C  very good!
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