1)
<Solve using the formula which is:
Mass=Density×Volume
2)
3)
(Length × Width × Height)
(Answer=7.5)
Larry's average speed is
(total distance) / (total time).
Speed = (80 km) / (60 min) = 80 km/hr .
Larry's average velocity is
(distance between start- and end- points),
in the direction from the start-point to the end-point.
Velocity = (40 km east) / (60 min) = 40 km/hr east .
Answer: Each hydrogen atom shares two electrons with each carbon atom, forming single covalent bonds, and the carbon atoms share four electrons between them, forming a double bond (two covalent bonds between the same pair of atoms).
Explanation:
This is a representation of the compound ethylene, C₂H₄, that shows the arrangement of the atoms (bonds):
H H
| |
C = C
| |
H H
The single lines (vertical dashes in this particular case) represent single covalent bonds, which are the result of sharing one pair (two) electrons between the given atoms, and the double lines ( two horizontal dashes) represent double bonds, which means that the carbon atoms are sharing two pair (four) electrons.
Newton's law of universal gravitation gives the gravitational force between two objects:
F = GMm/r²
F = gravitational force, G = gravitational constant, M & m are the masses of the two objects, r = distance between the objects
