Saved Bookmarks
| 1. |
CASO4 2) Calculate the mass of calcium sulfate containing 120 g of calcium (Ar(Ca) = 40; A (S) = 32);A (0) = 16):4b) 312 ga) 528 gcorrectc) 360 gd) 408 ge) no answer is |
|
Answer» Formula unit mass of CaSO 4 .2H 2 O= (Number Calcium atoms x atomic mass of Calcium) + (Number Sulphur atoms x atomic mass of sulphur) + (Number OXYGEN atoms x atomic mass of Oxygen) + (Number Water MOLECULES x MOLECULAR mass of water molecule)=(1×40)+(1×32)+(4×16)+(2×18)=40+32+64+36=172Formula unit mass of gypsum = 172 |
|