In 1994, to commemorate the 200th anniversary of a beverage company, a giant bottle was constructed and filled with 2.25 * 10 ^ 3 kg of the company's lemonade. Suppose the lemonade has an initial temperature of 28.0 C when 9.00 * 10 ^ 2 kg of ice with a temperature of -18.0 C is added to it. What is the lemonade's temperature at the moment the temperature of the ic reaches 0.0 C? Assume that the lemonade has the same specific heat capacity as water.

  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