Answer:
20 electrons
Explanation:
The atomic number equals the amount of protons in an atom's nucleus, but this number is also equal to the amount of electrons. So if the atomic number is 20, that means there are 20 protons and 20 electrons. ( they need to balance out since they have opposite charges)
I hope that helps :)
Answer:
The required volume of hexane is 0.66245 Liters.
Explanation:
Volume of octane = v=1.0 L=
Density of octane= d =
Mass of octane ,m=
Moles of octane =
Mole percentage of Hexane = 45%
Mole percentage of octane = 100% - 45% = 55%
Total moles = 11.212 mol
Moles of hexane :
Moles of hexane = 5.0454 mol
Mass of 5.0454 moles of hexane,M = 5.0454 mol × 86 g/mol=433.9044 g
Density of the hexane,D =
Volume of hexane = V
(1 cm^3= 0.001 L)
The required volume of hexane is 0.66245 Liters.
Answer:
Earthquake is the movement of the tectonic plates of the earth. It begins naturally under the surface. The two main causes of the earthquakes are the Tectonic activity linked with the plate margins and the faults in these plates. colliding in the convergent boundary or sliding past each other at the transform boundary.
Explanation: