Refer to the example about diatomic gases a and b in the text to do problems 19 - 27.
it was determined that 1 mole of b2 is needed to react with 3 moles of az.
how many grams in one mole of b2? a) 14 b) 28. c) 1

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

answersilicon (si); oxygen (o);

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