101.325 kPa = 760 mmHg.
So, 25.0 kPa is 187.515 mmHg
Answer: Galaxy
Explanation: A galaxy is a large system of stars held in place by mutual gravitation.
The empirical formula is obtained by calculating the mole ratios of the atoms in the elements.
The number of moles =mass/ R.A.M
For hydrogen, no. of moles=8/1=8
For oxygen, no. Of moles=64/16=4
The tabular solution is attached.
I think the answer is yellow. Sorry if I got it wrong