Acertain gasoline engine has an efficiency of 30%; that is, it converts into useful work 30% of the heat generated by burning a fuel. if the engine consumes 0.80 l/h of a gasoline with a heating value of 3.25 times 10^4 kj/l, how much power does it provide? express the answer both in kw and horsepower. suppose the fuel is changed to include 10% ethanol by volume. the heating value of ethanol is approximately 2.34 times 10^4 kj/l and volumes of gasoline and ethanol may be assumed additive. at what rate (l/h) docs the fuel mixture have to be consumed to produce the same power as gasoline?

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

the answer is 75.0%.