Make measurements that you can use to predict the volume of hydrogen gas that will be produced during this reaction. Show your measurements and how you calculate your prediction in the space below (Hint: how many mL of gas for every mol)
Its 177g of Mg metal added to HCl.

56 moles of   lieter in chemistry

what is the question?

the answer is barium and copper bromide

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