= 2 × 23 + 2 × 52 + 2 × 16
= 182 grams
1 mole of weighs = 182 g
8 moles weigh = 8× 182
=
or
a group of students wants to see how temperature affects the time it takes for spilled water to dry up. in the investigation wat
2 answers:
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Answer : The final concentration of is, 2.9 M
Explanation :
Expression for rate law for first order kinetics is given by:
where,
k = rate constant =
t = time passed by the sample = 3.5 min
a = initial concentration of the reactant = 3.0 M
a - x = concentration left after decay process = ?
Now put all the given values in above equation, we get
Thus, the final concentration of is, 2.9 M
All the given compounds are basic on acidifying their solubility increases.
<u>Explanation:</u>
solubility will increase, since it is basic in nature, on acidifying solubility increases.
being basic on acidification, the solubility increases.
is alkaline in nature, it gets neutralized and there is no increase in acidity.
is a salt and it shows no effect on acidification.
is a salt but insoluble in water and shows no effect on acidification.
is strongly basic in nature, on acidifying the solubility increases.