Answer:
Sodium is higher than Potassium in thesame group
Explanation:
Sodium and potassium are the elements present in the first group of the periodic table. In group, atomic size increases from top to bottom this implies that even atomic radius increases. This causes less attraction force by nucleus on the electrons of outermost orbit of the atom and hence reduces the first ionisation energy, which is the energy required to remove the electron from the outermost orbit of an atom. So, as potassium is below sodium in the group, sodium has greater ionisation energy than potassium
Answer: (D) 0.025 mol
Explanation:
The given balanced equation is :
According to stoichiometry :
4 moles of ammonia reacts with = 5 moles of oxygen
Thus 0.30 moles of ammonia reacts with = moles of oxygen
Now as given moles of oxygen are more than the required amount, oxygen is the excess reagent.
moles of oxygen left = 0.40 - 0.375 = 0.025
Thus 0.025 mol excess reagent remains.
Answer:
Concentration of oxygen (O2) = 2.7 x 10^-6 M
Explanation:
The concept of Henry's law was applied as this shows the relationship between solubility and the pressure in atm, and sometimes it is related to the concentration in molar as it was applied and shown in the attachment.