Refer to the Newsela article "How You Can Make a Solar Oven To Cook with a Pizza Box."

What is the author's purpose in mentioning variables in designing the solar oven?

to show how easy it is to produce solar energy

to encourage readers to vary the design

to explain how wasteful solar energy production can be

to show the author did not think too hard about the design

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

Table sugar completely dissolved in water is an example of a?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.