Acompany is developing a new type of airplane that can take off like a helicopter. before they begin manufacturing the airplanes in a large scale, they first build a prototype. what is the main purpose of building a prototype? a: to find a market in which to sell the product b: to train factory workers about how to make the product on a large scale c: to make sure the design works as expected d: to show future customers what the product will look like?

C, to make sure the design works as expected.

A prototype is first, typical model of the said product. Hope this helps!

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"