Answer:
Cl2 at 250 K < Cl2 at 300 K < H2S at 250 K < H2S at 300 K.
Explanation:
Answer:
a liquid
Explanation:
I'm not for sure but I just looked it up
Answer:
b) 63.7 kJ
Explanation:
we have ΔH = 127.3 kJ/mol
for 1.00 mole of CO the equation can be re-written as,
since the number of moles are halved ΔH also gets halved as per Hesse's law of constant summation,
ΔH =
= 63.7 kJ
The atomic number of calcium is 20 which means it has 20 protons and as an atom (not an ion) it also has 20 electrons. These are in four energy levels (1 though 4) .
<h2>
Answer:</h2>
- Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas.
example: Acetic acid
- Bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery;
example: sodium bicarbonate
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