Calculate the cost of gasoline for a 420-mile trip if your car averages 20 miles/gallon of gas, and the gas cost 0.95/gallon.

Answer : The cost of gasoline for a 420-mile trip is, $19.95

Solution :

As, 20 mile distance covered by 1 gallon of gas

So, 420 mile distance covered by of gas

Now we have to calculate the cost of gasoline.

As, 1 gallon of gas cost = $0.95

So, 21 gallon of gas cost =

Therefore, the cost of gasoline for a 420-mile trip is, $19.95

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

the maximum mass of nh3 is nh3 in grams