Select all the correct answers.
Which sentences contain a noun clause?
A:Rhett was unwilling to listen to what his friend told him.
B:Jade won the Frisbee competition that was held in the city park.
C:Whoever said that the early bird catches the worm was right.
D:The cowboy threw his lasso at the bull, which quickly threw it off and raced away.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally