The answer is A. They actually have negligible mass because gamma rays are photons with very high frequency. Gamma rays are the strongest in the electromagnetic spectrum meaning they have the highest energy. This way, they also have very low frequency hence have lower chances of interacting with matter thence more easily able to penetrate solids.
Answer: 1739.6g
Explanation:
P1 = 7.04MPa
T1 = 25°C = 25 + 273 = 298K
n1 = 150mol
P2 = 2MPa
T2 = 19°C = 19 + 273 = 292K
n2 =?
n1T1/P1 = n2T2/P2
(150x298)/7.04 = (n2x292)/2
7.04xn2x292 = 150x298x2
n2 = (150x298x2) /(7.04x292)
n2 = 43.49moles
Molar Mass of Ar = 40g/mol
Mass = n x molar Mass = 43.49x40 = 1739.6g
Did you perhaps mean the phase of matter?
If so, then a solution has only one phase of matter: liquid. It is always almost always liquid because solutions are made up of a solvent and a solute and a solvent is always a liquid. Though, some may come in an emulsion form, but still it can be considered as liquid