Yes <span>cation is bigger than an anion
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Given information:
Mass of pure silver = 195 mg
To determine :
Mass of silver chloride required to plate 195 mg of pure silver
Calculation:
The silver chloride used for silver plating usually contains 75.27 % silver
i.e.
every 100 mg of silver chloride will contain 75.27 mg silver
therefore, amount of silver chloride corresponding to 195 mg of silver would be = 195 mg * 100 mg/75.27 mg
= 259.1 mg
Answer:
Explanation:
<em>ANSWER : CORRECT OPTION WILL BE :(D). 75 %
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<em>MASS % OF CaCO3 = ( Mass of CaCO3 / Mass of the egg-shell sample ) * 100</em>
Answer:-
0.3 moles
Explanation:-
According to the question,
Volume of nitrogen gas V = 6.8 litres.
Pressure of nitrogen gas P = 100 kPa.
Temperature of nitrogen gas T = 273 K.
We know the value of universal gas constant R = 8.314 litres kPa K−1 mol−1
Using the relation
PV = nRT
We have Number of moles of nitrogen gas n = P V / RT
= 100 kPa x 6.8 litres / ( 8.314 litres kPa K−1 mol−1 x 273 K)
= 0.3 mol
Thus there are 0.3 moles of nitrogen gas in 6.8 liters at standard temperature and pressure (273 K and 100 kPa)
