Answer:
I think it's D cause one of the requirements for a planet is that it has to revolve around a star
The charge is neutral.
To find the charge, subtract the number of electrons from the number of protons. Because they are the same, there is no charge.
Given :
Mass of O₂, m = 25.43 g.
To Find :
How many liters of gas will you have at STP.
Solution :
Molecular mass of O₂, M.M = 2 × 16 gram/mole
M.M = 32 gram/mole
Number of moles is given by :
n = m/M.M
n = 25.43/32 mole
n = 0.79 mole
Hence, this is the required solution.
This is not chemistry but it's A, off top.
