Answer:
0.735M
Explanation:
The balanced equation of reaction is:
HCl + KOH ===> KCl + H2O
Using titration equation of formula
CAVA/CBVB = NA/NB
Where NA is the number of mole of acid = 1 (from the balanced equation of reaction)
NB is the number of mole of base = 1 (from the balanced equation of reaction)
CA is the concentration of acid = 2.5M
CB is the concentration of base = to be calculated
VA is the volume of acid = 14.7mL
VB is the volume of base = 50mL
Substituting
2.5×14.7/CB×50 = 1/1
Therefore CB =2.5×50×1/14.7×1
CB= 0.735M
Answer:
Gases we Breathe Out
It is the same air that we inhale. ... The amount of inhaled air contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide.
Answer:
18.
Explanation:
1) according to the reaction (M(Fe)=56; M(O₂)=32; V₀=22.4):
4Fe+3O₂⇒2Fe₂O₃; - ν(O₂)=0.75*ν(Fe);
2) ν(Fe)=m(Fe)/M(Fe)=60/56≈1.071 [mol];
3) ν(O₂)=0.75*1.071=0.804 [mol];
4) V(O₂)=V₀*ν(O₂); ⇒ V(O₂)=22.4*0.804=18 [lit].
Together, The continental shelf and the continental slope are a part of the Continental Divide