Answer:
67° C increase
Explanation:
235 gm * 4.186 J /g-C * x = 66 000 J x = degree change C°
x = 67 degrees C
1st balance C : C5H12 -> 5CO2
2nd balance H: C5H12 -> 6H2O
final balance O : (5x2+6)/2=8 -> 8O2
So answer is: C5H12+ 8O2 -> 5CO2+ 6H2O
Answer:
C. 7.50g
Explanation:
The percent (%) by mass of a solute in a solution refers to the number of grams contained in 100g of solution by that solute. In this case, 5% by mass of pottasium chloride (KCl) means 5g of KCl is contained in 100g of solution.
Therefore, in 150g of solution, there would be:
5g/100g × 150g
= 0.05 × 150
= 7.50g of KCl solute.
Hence, 7.50g of pottasium chloride would be expected to be collected by evaporating 150.0 g of the solution.
Physical is something you can see with your eyes Chemical is something you can not
Answer:
The molar solubility of carbon dioxide gas is .
Explanation:
Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.
To calculate the molar solubility, we use the equation given by Henry's law, which is:
where,
= Henry's constant =
= partial pressure of carbonated drink
where = p = Total pressure = 0.400 atm
= mole fraction of
Putting values in above equation, we get:
Hence, the molar solubility of carbon dioxide gas is .