Answer:
B
Explanation:
A is wrong because heat is what makes the process faster.
B is right because the finer grains are able to dissolve at a higher rate since the amount of one grain reduces it's time to dissolve.
C is wrong because simply adding more water will not increase or decrease the dissolving rate.
Answer: The actual value of
is -618 J/mol
Explanation:
Relation of ree energy change and equilibrium constant

where,
= Free energy change
= standard free energy change = +29 kJ/mol =
R = universal gas constant
T = temperature = 
= equilibrium constant = 


The actual value of
is -618 J/mol
Potato I don't know the awnser
<u>Answer:</u> The correct answer is Option a.
<u>Explanation:</u>
The reaction between sodium thiosulfate and nitric acid produces a number of products. The balanced chemical equation for the reaction of two follows:

By Stoichiometry of the reaction:
1 mole of sodium thiosulfate reacts with 2 moles of nitric acid to produce 2 moles of sodium nitrate, 1 mole of water, 1 moles of sulfur dioxide and 1 mole of solid sulfur.
Hence, the correct answer is Option a.
A lever is a machine made of fulcrum and rigid beam. Force is added to either side of them beam.