a)

d_{X//H_2}={M_X}/{H_2}=8

->M_X=8.2=16(a m u)

b)

d_{Y//H_2}={M_Y}/{M_{H_2}}=15

->M_Y=15.2=30(a m  u)

c)

d_{Z//H_2}={M_Z}/{M_{H_2}}=32

->M_Z=32.2=64(a m u)

d)

d_{T//kk}={M_T}/{29}=1,517

->M_T=1,517.29\approx 44(a m u)

e)

d_{U//kk}={M_U}/{29}=2,759

->M_U=2,759.29\approx 80(a m u)

a)

M_X = 8.2 = 16(g//mol)

b)

M_Y = 15.2 =30(g//mol)

c)

M_Z = 32.2 = 64(g//mol)

d)

M_T = 1,517.29 = 44(g//mol)

e)

M_U = 2,759.29 = 80(g//mol)