I think it is D- diluting a solution sorry if i am wrong
Answer: The planet, named after the Roman goddess of art and beauty, can actually be bright enough to cast shadows on a moonless night. It appears so close to the sun because its orbital radius is smaller than the Earth's, and because it also moves faster than Earth, its orbital period is shorter.
It means that 19.3g of gold is packed into 1cm^3.
Answer:
The value of
is
.
Explanation:
Given that,
Number 
Energy difference = 6\times10^{-21}\ J[/tex]
Temperature T =300 K
We need to calculate the value of 
We know that,



Hence, The value of
is
.