QUICK HELP CHEMISTRY GUYS I HAVE 15 MINUTES BEFORE I NEED TO SUBMIT i just need answe

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kkona
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If 25.00 mL of 4.50 M NaOH(aq) is diluted with water to a volume of 750.0 mL, what is the molarity of the diluted NaOH(aq)?

If 5.15 g Fe(NO3)3 is dissolved in enough water to make exactly 150.0 mL of solution, what is the molar concentration of nitrate ion?
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kkona
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Help please 8 minutes
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kkona
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HELPW
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5hyl33n
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(Original post by kkona)
If 25.00 mL of 4.50 M NaOH(aq) is diluted with water to a volume of 750.0 mL, what is the molarity of the diluted NaOH(aq)?

If 5.15 g Fe(NO3)3 is dissolved in enough water to make exactly 150.0 mL of solution, what is the molar concentration of nitrate ion?
Why would you leave this 15 minutes before it is due?

For the second one:

1) You need to find the molecular weight.
2) Find the number of moles.
3) Divide moles by litres. Remember to convert!

Now you need to write the balanced equation and see how many moles of you need of NO3^-
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kkona
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(Original post by 5hyl33n)
why would you leave this 15 minutes before it is due?

For the second one:

1) you need to find the molecular weight.
2) find the number of moles.
3) divide moles by litres. Remember to convert!

Now you need to write the balanced equation and see how many moles of you need of no3^-
2 monutaes tell me the answer i dont have time
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5hyl33n
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(Original post by kkona)
2 monutaes tell me the answer i dont have time
That's your problem. We are not here to tell you the answer. You need to work it out yourself. If you are stuck, that is fine, but it seems like you haven't even tried!
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Ne en mia nomo
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Sorry, but you specifically wanted help from BOYS.
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kkona
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(Original post by 5hyl33n)
That's your problem. We are not here to tell you the answer. You need to work it out yourself. If you are stuck, that is fine, but it seems like you haven't even tried!
ight I just guessed I put one as 0.142, I missed the lecture for this so thats why I asked I mean -2 points at the max
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5hyl33n
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(Original post by kkona)
ight I just guessed I put one as 0.142, I missed the lecture for this so thats why I asked I mean -2 points at the max
I suggest you catch up with what you missed then! :work:
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kkona
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(Original post by 5hyl33n)
I suggest you catch up with what you missed then! :work:
did I get it right tho
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5hyl33n
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(Original post by kkona)
did I get it right tho
What did you put as your answers?
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kkona
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(Original post by 5hyl33n)
What did you put as your answers?
0.142 and 0.158 i dont remember for which questions. I just guessed
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5hyl33n
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(Original post by kkona)
0.142 and 0.158 i dont remember for which questions. I just guessed
You couldn't have guessed because you are partially there with the 0.142 answer. You just forgot one last step. It's asking for the molar concentration for the nitrate ion.
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