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What is the amount of potassium permanganate in 300mL of a 1 in 25 solution?
Suggested Answer: C
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We have 1g of potassium permanganate in 25mL We have 300mL of solution
For every 25mL of that 300mL, we have 1g of KmnO4
300mL must have 12g of potassium permanganate (300ml/25mL)
28 comments · newest first
JA
Jacki
10 months ago
I thought it would be less, but okay!
DO
Donette
11 months ago
1 in 25 means 12 grams in 300mL.
TR
Trina
11 months ago
Wait, how do you get that? Seems off.
VE
Verlene
11 months ago
Totally agree, 12 grams makes sense.
IZ
Izetta
11 months ago
It's 12 grams in that solution!
CA
Casey
12 months ago
I’m leaning towards option B, 8 grams, but I can’t recall how I got there. I hope I didn’t mix up the calculations!
RE
Renay
12 months ago
I’m a bit confused about the units. Does the 1 in 25 mean 1 gram in 25 mL? I feel like I might have seen something like this before.
AN
Anglea
12 months ago
I remember practicing similar questions, and I think you multiply the total volume by the fraction to find the mass. So maybe it’s 300mL divided by 25?
JO
Jolanda
1 year ago
I think a 1 in 25 solution means there’s 1 part solute for every 25 parts solution, but I’m not sure how to calculate that for 300mL.
PA
Pauline
1 year ago
Ugh, I'm really struggling with this one. Chemistry is not my strong suit. I'm just going to guess and hope for the best.
MI
Mira
1 year ago
I think I've got this! We need to find the volume of the solute in the 300mL solution. Since it's a 1 in 25 solution, the volume of the solute is 1/25 of the total volume, which is 300mL. So the volume of the solute is 12mL. Now we just need to find the mass of the solute, which should be the answer.
JA
Jacquelyne
1 year ago
Hmm, I'm a bit confused on how to approach this. Is there a formula we need to use to calculate the amount of solute? I'm not sure if I'm remembering that correctly.
GA
Gabriele
1 year ago
Okay, let's think this through step-by-step. We have a 1 in 25 solution, so that means the concentration is 1 part solute to 25 parts solvent. We need to find the amount of potassium permanganate in 300mL of this solution.
DE
Delisa
2 years ago
I'm not sure, but I think it's D) 14 grams based on the volume of the solution.
TO
Tora
2 years ago
I believe it's C) 12 grams because of the concentration.
CE
Ceola
2 years ago
Haha, I bet the answer is C) 12 grams. That's my lucky number, so it must be the right choice!
JU
Julian
2 years ago
This question is a piece of cake! The answer is clearly A) 1 gram. I could do this in my sleep.
JE
Jesus
2 years ago
Hmm, I'm torn between C) 12 grams and D) 14 grams. I'll have to double-check my calculations.
RO
Romana
2 years ago
B) 8 grams
MA
Macy
2 years ago
A) 1 gram
AL
Alba
2 years ago
I think it's A) 1 gram.
AN
Annalee
2 years ago
B) 8 grams sounds about right to me. I remember learning about this in chemistry class.
LE
Lea
2 years ago
B) 8 grams
BA
Barrie
2 years ago
A) 1 gram
KE
Kendra
2 years ago
I think the answer is D) 14 grams. Potassium permanganate is a strong oxidizer, so we need to be precise with the concentration.
ST
Stephaine
2 years ago
I'm pretty sure it's B) 8 grams.
CO
Corrina
2 years ago
I think it's actually C) 12 grams.
SU
Susana
2 years ago
I agree, the answer is D) 14 grams.