Explanation:
The given data is as follows.
Current (I) = 3.50 amp, Mass deposited = 100.0 g
Molar mass of Cr = 52 g
It is known that 1 faraday of electricity will deposit 1 mole of chromium. As 1 faraday means 96500 C and 1 mole of Cr means 52 g.
Therefore, 100 g of Cr will be deposited by "z" grams of electricity.
z =
= 185576.9 C
As we know that, Q = I × t
Hence, putting the given values into the above equation as follows.
Q = I × t
185576.9 C =
t = 53021.9 sec
Thus, we can conclude that 100 g of Cr will be deposited in 53021.9 sec.
Answer:
Explanation:
Silicon, phosphorus, sulphur, and chlorine oxides are acidic
Sodium oxide, which reacts with water to produce sodium hydroxide. Magnesium oxide, which reacts with hydrochloric acid to form magnesium chloride. Copper(II) oxide, which reacts with nitric acid to form copper nitrate are basic.
Answer: Percent ammonia in is 38.2 % in 3 significant figures.
Explanation:
To calculate the mass percent of element in a given compound, we use the formula:
Molar mass of = 267 g/mol
Mass of =
Thus
Thus percent ammonia in is 38.2 % in 3 significant figures.
Answer:
it's B(Energy source,conductor and receiver)