Answer:
A - A fruit of vegetable will begin to grow
When Cr+3 + 3e- → Cr(s)
So according to the charge formula:
charge Q = I * t
when we have I (the current) = 7.4 a
and t (the time in seconds) = 1.85d * 24h * 60 min*60sec= 159840 sec
by substitution:
Q = 7.4 a * 159840 sec = 1182816 C
now to get the mass we have to use Faraday constant which is:
F = e NA
= 1.602 x 10^-19 * 6.022 x 10^23
= 96485 C mol^-1
when e is the electron charge & NA Avogadro's number for the charge in on mol
and as we can see from the equation Cu3+ reacts with 3 electrons so,
the mass of Cr(s) = Q* (1mole-/F) * (1molCr / 3 mol e-)
= 1182816 * (1/96485) * (1/3)
= 4.1 g
Along each row of the periodic table, the atomic mass increases from left to right.
Explanation:
The elements in the periodic table are arranged based on rows and periods by increasing atomic number.
The periodic table has rows from left to right and columns from up and down. These rows are called periods and columns are called groups.
The electron organization in an atom explains about the shape and the elements in the same column have similar chemistry. The elements in each column have the same valence shell electron configuration and they have similar properties.
The answer to this question is b short term actions in specific area
