2. If a solution of KNO, has 80 g/100 of
water at 70 °C, what is its saturation?
Unsaturated, saturated, or
supersaturated?

3. Which substance does not follow the
trend of increasing solubility with a rise
in temperature?

4. According to what you've read, why is
this probably the case for this substance?

5. If there is 140g of KI per 100 g of water and the solution is saturated, what must it’s temperature be?

6. How would you make a supersaturated solution of KClO3?

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

im sorry i dont know