The partial pressure of oxygen in a sample of air is 452 ...
The partial pressure of oxygen in a sample of air is 452 mm Hg and the total pressure is 780 mm Hg. What is the mole fraction of oxygen?
0.203
0.579
2.030
5.790
Correct answer is B
Mole fraction = \(\frac{\text{Partial pressure of component}}{\text{Total pressure of compound}}\)
= \(\frac{452}{780}\)
= 0.579
Which of the following elements would produce coloured ions in aqueous solution? ...
The metal that is used as a catalyst in the hydrogenation of oils is ...
(I). 3CuO(s) + 2NH3(g) -----> 3Cu(s) + 3H2O(l) + N2(g) (II). 2NH3(g)&n...
The pH of four solutions W, X, Y, Z are 4, 6, 8, 10 respectively, therefore ...
25cm<sup>3</sup> of a mixture of nobel gases was obtained from air after the removal of ...
The compound above exhibits ...
What is the chemical symbol for Thorium? ...
Who proposed the planetary model of the atom with electrons orbiting the nucleus? ...