Answer:
Option a, 
Explanation:
According to Arrhenius concept of acids and bases, acids are those substances which releases H+ in aqueous solution and bases are those which releases OH- in aqueous solution.
Among the given only can release 
in aqueous solution.
LiOH releases 
, therefore it is an Arrhenius base.
and 
cannot releases .
So, the correct option is option a.
You are given
the hydrate CoCl2.6H20. You are required to get the percentage of water in this
chemical substance. The first thing to do is to get the molar mass of CoCl2.6H20
and CoCl2. The molar masses are 237.8 grams per mole and 129.8 grams per mole
respectively. The formula in getting the percentage of water is
%=[1-(grams
of CoCl2/grams of CoCl2.6H20)]*100.
Substitute the
molar masses of CoCl2.6H20 and CoCl2.
%=[1-(129.8 grams
of CoCl2/237.8 grams of CoCl2.6H20)]*100.
<u>% of water
= 45.42%</u>
Answer:
18 years old or when they become mature.
Explanation:
Answer: C) The mass stays constant as it changed from a liquid to a gas
Explanation: Mass stays constant, it's never destroyed or created. It follows the law of conservation of mass.
