Water acts as solvent and it has no effect on the amount of the acid or the titrating agent.
<span>Also, the concentration of the titrating agent must be known exactly, the amount of solvent is less important (the more diluted it is, the more accurate is the titration).</span>
B. It protects the species classified as endangered
Answer:
The answer to your question is
a) 212.7 g
b) 110 g
Explanation:
a) Mass of three moles of Chlorine
Atomic weight of Chlorine = 35.45 g but chlorine is a diatomic molecule then the atomic weight = 2(35.45) g = 70.9 g
70.9 g of Cl₂ --------------- 1 mol
x --------------- 3 moles
x = 3(70.9)/1
x = 212.7 g
b) mass of one mole of K₂S
Molecular mass = (39 x 2) + (32 x 1)
= 78 + 32
= 110 g
110 g of K₂S ---------------- 1 mol
Density = 7.90 g/cm³
volume = 1.00 cm³
Therefore:
mass = density * volume
mass = 7.90 * 1.00
mass = 7.90 g