The automobile fuel called e85 consists of 85 % ethanol and 15 % gasoline. e85 can be used in so-called "flex-fuel" vehicles (ffvs), which can use gasoline, ethanol, or a mix as fuels. assume that gasoline consists of a mixture of octanes (different isomers of c8h18), that the average heat of combustion of c8h18(l) is 5400 kj/mol, and that gasoline has an average density of 0.70 g/ml. the density of ethanol is 0.79 g/ml. by using the information given, calculate the energy produced by combustion of 1.5 l of gasoline.

of energy is produced by combustion of 1.5 L of gasoline.

Explanation:

The average heat of combustion of liquid octane =

Density of gasoline = 0.70 g/mL

Mass of gasoline with volume 1.5 L be m

V = Volume = 1.5 L = 1500 mL

Since gasoline consists of a mixture of octanes. We can treat gasoline as a compound as octane.

Moles of octane =

Energy produced by combustion of  9.2105 mol of gasoline:

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

personal, she chose to do it.