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Shkiper50 [21]
3 years ago
7

How many moles are in 22 grams of lithium

Chemistry
1 answer:
N76 [4]3 years ago
6 0

Answer:

3.1695 moles

Explanation:

Moles × grams/1 mole = x amount of grams

Grams: 1 mole/grams

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A 17.6-g sample of ammonium carbonate contains ________ mol of ammonium ions.
postnew [5]
These problems are a bit interesting. :)

First let's write the molecular formula for ammonium carbonate. 

NH4CO3 (Note! The 4 and 3 are subscripts, and not coefficients)

17.6 gNH4CO3

Now to convert to mol of one of our substances we take the percent composition of that particular part of the molecule and multiply it by our starting mass. This is what it looks like using dimensional analyse. 

17.6 gNH4CO3 * (Molar Mass of NH4 / Molar Mass of NH4CO3)

Grab a periodic table (or look one up) and find the molar masses for these molecules! Well. In this case I'll do it for you. (Note: I round the molar masses off to two decimal places)

NH4 = 14.01 + 4*1.01 = 18.05 g/mol
NH4CO3 = 14.01 + 4*1.01 + 12.01 + 3*16.00 = 78.06 g/mol


17.6 gNH4CO3 * (18.05 molNH4 / 78.06 molNH4CO3)
= 4.07 gNH4

Now just take the molar mass we found to convert that amount into moles!

4.07 gNH4 * (1 molNH4 / 18.05 gNH4) = 0.225 molNH4

4 0
3 years ago
2) Will all atoms behave exactly the same when the temperature is changed? ​
Butoxors [25]

no...the atoms will not behave the same

as when temperature is increased, the atoms vibration and kinetic energy will also be increased....they come in excited state...

where as when temperature is reduced ,atoms kinetic energy slows down....

7 0
3 years ago
I need help plz..
Anuta_ua [19.1K]

Answer:

1. a simulation 2. saurology

Explanation:

4 0
2 years ago
Read 2 more answers
Can someone please help me with this?
yaroslaw [1]

Answer:

Lonic.an electron will be transferred from potassium to the chlorine atom

3 0
3 years ago
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Why do we use commas after transition words?
ra1l [238]

Answer:

C - commas indicate a natural pause in the sentence

8 0
2 years ago
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