Answer:
Solution
1.4 gm of CaO⟶n0.4 gm of Oxygen
1.0 gm of O2⟶3.5 gm of Ca
According to the law of definite proportions
n/m=y/x
⇒1.4/0.4=3.5.
⇒3.5=3.5
Explanation:
John Dalton, an English chemist
3KOH + H₃PO₄ ----> K₃PO₄ + 3H₂O
3 moles 1 mole
3 moles KOH ------ 1 mole H₃PO₄
X moles KOH ------ 1,56 mol
X = 3×1,56
X = 4,68 moles of KOH
:)
The answer c) A- Cell membrane because it selects what molecules enter/exit the cell
