Answer:
each gas in the mixture add to give the total pressure (Ptot = P1 + P2 + P3 + ...) 1. ... After mixing, there will be the same number of moles of each gas, at the same T, just in a different volume. .OOL ... Pe=1697 atm P = 174_ atm. (1.000. ... Oxygen is pumped into a tank to supply breathing air for scuba diving, until the gas
Explanation:
Answer:
See the answer below.
Explanation:
<em>If an aqueous solution of two salts contains both Na2CO3 and Na2SO4, the following steps will prove the occurrence of both carbonate and sulphate ions:</em>
1. Add a dilute acid (such as HCl) to the solution. The presence of carbonate ion will result in the release of carbon dioxide gas which will be shown by formation of effervescent bubbles. The gas can be proven to be carbon dioxide by channeling it into a lime water which usually turns milky with the presence of the gas.
2. Add barium chloride to an acidified portion of the aqueous solution. The presence of sulphate ion will be indicated by the formation of white barium sulphate precipitate. Initial acidification is done to disperse off any carbonate ion that might be present in the solution and give a false-positive white precipitate result.
Explanation:
The generated Na+ and OH-ions are immediately surrounded by molecules of water (typically 6, each). There is the development of the exothermic hydration sphere for each ion. It seems as though there is negative overall energy of dissolving solid NaOH.
Now, since this dissolution is exothermic the temperature of the mixture rises.
Alcohal is in liquid state and in plasma free electrons are present
They have the same number of valence electrons.