Question

Calculate the mass in grams of each of the following samples: (a) 1.2 moles of K (b) 75moles of Ha (c) 0.25 moles of steam (d) 1.05 moles of CuSO4.5H2O (e) 0.15moles of H2SO4 f the followings wind75 moles of H2 ​

Answer 1

Answer:

a)46.8 gm

c)4.5 gm

d)261.9 gm

e) 14.7 gm

Step-by-step explanation:

No. of moles = given mass / atomic or molecular mass

a) 1.2 = given mass / 39

given mass = 46.8 gm

b) Sorry but I think there is no element like Ha.

c) Steam is gaseous water, i.e. H2O.

0.25 = given mass / 18

given mass = 4.5 gm

d) 1.05 = given mass / 249.5

given mass = 261.9 gm

e) 0.15 = given mass / 98

given mass = 14.7 gm