<span>let's start:
16 g NaOH has 84 g of water
moles of NaOH =16/40
=0.4
moles of water =84/18
= 4.667
Total moles = 0.4+4.667
= 5.067
mole fraction of NaOH = 0.4/5.067
= 0.0789
Conclusion:
84 g water will have 0.4 moles of NaOH
1000g water will have [0.4x 1000]/84
= 4.76 moles
This is called molality.
ENJOY :)
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We know,
1000 cm³ = 1 L
1 cm³ = 1 / 1000 L
508 cm³ = (1 / 1000) * 508 L =
0.5080 L
So, 508 cm³ = 0.5080 LNow,
We know,
22.4 L = 1 mole
1 L = 1 / 22.4 mole
0.5080 L = (1 / 22.4) * 0.5080L =
0.0227 moles
So, 0.0277 moles moles of are added to the tank before it is used for paintball.
Answer:
Explanation:
Potassium iodide reacts with oxygen in presence of water to produce potassium hydroxide and potassium diiodoiodate(I) .
5KI + 2H₂O + O₂ =4 KOH + I₂ + K(II₂) .
The arrow that are drawn correctly are the cool air current and the upper air current. In the sea breeze, warm air moves up because it is less dense that the cool air. The cool air moves down to replace the warm air. The land breeze current moves from the land to the sea while the sea breeze moves from the sea to the land. This creates a continuous flow of current at the sea level.
Air, glass, plastic, wood, rubber are good insulators