where is this ques? can you tell me?
http://www.scribd.com/mobile/doc/73549537
Page two first question
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where is this ques? can you tell me?
Vishal
Umm, idk
yar tuje pata hai me maths me bohot kaccha hu and isme calculations he aur wo bhi algebra to probs heVishal
RIP.yar tuje pata hai me maths me bohot kaccha hu and isme calculations he aur wo bhi algebra to probs he
what's the answer?
RIP.
what's the answer?
I think it might be C or D coz the Si28 should be the highest in percentage abundance(relative abundance)
First i thought of B but i didn't have any reasonThe answer is B. I've done some calculations and still couldn't find it.
yeah see it as this is a type of algebra quesLemme see.
Naturally occuring silicon is a mixture of three isotopes, 28Si, 29Si, and 30Si. The relative atomic mass of silicon is 28.109. What could be the relative abundance of each of the three isotopes?
Help pls I can't figure it out
ZaqZainab do solve this
ZaqZainab do solve this
Hi can anyone please help me with the following questions-
View attachment 46260
The answer is B, if possible can someone please highlight the chiral centres cause i thought it should be C
View attachment 46261
The answer is D, i don't get this one at all.
View attachment 46262
The answer is B though I thought it can equally be A or B.
View attachment 46264
The answer is C
View attachment 46265
The answer is B
View attachment 46267
The answer is C, that is option 2 and 3 is correct.
View attachment 46268
The answer is D
Thank you so much for your effort and time!
A: (91.1*28 + 7.9*29+30)/100 = 28.009
B: (92.2*28 + 4.7*29 + 3.1*30)/100 = 28.109
So, B.
The idea is to multiply the relative abundance with the isotopic mass and take the average of the abundances.
Do note, though, that sometimes the three or four or however many abundance percentages are given DO NOT add up to 100%. You've to be careful what you divide with!
I know how to do it if i were to calculate the answers one by one, but i was actually looking for an alternative way to find it without doing that.
But i guess it's impossible since there's 3 unknown and 1 equation.
Thanks btw!
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