Q4: Ethanol has a boiling point of 78°C. Water has a boiling point of 100°C. Describe how distillation is used to separate a mixture of ethanol and water.

Explanation:

A mixture of ethanol and water can easily be separated by distillation. Distillation separation technique utilizes the differences in boiling point of a mixture of two liquids.

Since water has a higher boiling point compared to alcohol, it makes it easier for the process of distillation to occur

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the answer is 75.0%.