What kind of energy transformation occurs in a gasoline-powered car?

a.
chemical energy is converted into mechanical energy.

b.
mechanical energy is converted into light energy.

c.
light energy is converted into sound energy.

d.
sound energy is converted into chemical energy.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.