Question

0.9 a)10 grams of calcium carbonate (CaCO3) produces 3.8 grams of
carbon dioxide (CO2) and 6.2 grams of calcium oxide (Cao). Show that
these observations are in agreement with the law of conservation of mass.
b) How many atoms are present in H2S molecule?
c) Calculate the molecular mass of CH3OH.
d) Write the name of compound i) Al2(SO4)3​

Answer 1

Answer:

(a) mass of reactant part is equal to the total mass of product part hence if follows law of conservation of mass

(b) total atom =3. 2 atom of hydrogen and 1 atom of sulphur in one molecule of h2s

(c) 12+3*1+16+1=32

(d) Aluminium sulphate