Original post by ra1500
Help pls on number 6.
Can you do all the other ones?
Is it just the 9 to 6 to 1 that you're struggling with?
Original post by ra1500
yeah
9 + 6 + 1 = 16.
The abundance of the first one is 9/16 x 100 %
I got 33.3 for the average relative mass: I'm not entirely sure if that's correct though.
EDIT: I think the second part is:
(75 x 35) + (25 x 37) /100= 35.5
Just to reiterate; I'm not sure if I'm correct.
Just a quick question; is this GCSE work? If so, Year 10 or Year 11?
EDIT: I think the second part is:
(75 x 35) + (25 x 37) /100= 35.5
Just to reiterate; I'm not sure if I'm correct.
Just a quick question; is this GCSE work? If so, Year 10 or Year 11?
(edited 6 years ago)
Quick Reply
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