<span>When ammonium is dissolved in wated, we have,
NH3 + H2O >> NH4+ + OHÂŻ
pOH = -log[OH-]
pOH = -log[2.25x10^-2]
pOH = 1.6478
Since pH + pOH=14. Therefore pH = 14 - pOH = 14 - 1.648 = 12.3522.
[H+]=10^-pH
[H+]=10^(-12.3522)
[H+]= 4.3250 * 10 ^(-5)</span>
Answer:
The reason that the balloon shrinks is because when the temperature drops, helium becomes more dense then it already is. So what happens is that its molecules lose energy, slows down and moves closer together to conserve heat and this decreases the volume inside the balloon because the helium molecules are moving closer together, rather than outward toward the shell of the balloon which cause the balloon to swell then shrink. The gas law that causes this to happen is the Charles law.
Explanation:
Answer:
they must have same atomic number and different atomic mass
Explanation:
To form bonds with noble gases, a lot of energy is required to form those bonds. Halogens, on the other hand, are extremely reactive. ... The halogens tend to be very reactive, while the noble gases are in no way reactive and don't bond easily, if at all.