Answer : The time taken for the reaction is, 28 s.
Explanation :
Expression for rate law for first order kinetics is given by :
where,
k = rate constant = 0.0632
t = time taken for the process = ?
= initial amount or concentration of the reactant = 1.28 M
= amount or concentration left time 't' =
Now put all the given values in above equation, we get:
Therefore, the time taken for the reaction is, 28 s.
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Answer:
the answer is potassium
Explanation:
Potassium has only one valence electron. ... Whereas, calcium has two valence electrons, so it requires more energy for the removal of a valence electron. Due to this potassium is more reactive than calcium.
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Answer:
Ten electrons.
Explanation:
The atomic number of titanium is 22.
It means a neutral atom will have 22 electrons.
We fill the electrons in an atom based on three principles
a) Auf Bau Principle
b) Hund;s rule
c) Pauli's exclusion principle.
So based on these three the electronic configuration of titanium will be:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²
Thus there are three orbitals in n = 3 shell
The number of electrons in n=3 shell = 2 + 6 +2 = 10.
Nickel has 10 valence electrons.
Answer:
Non of the option applies
Explanation:
Gases may be assumed to obey the ideal gas law, which states that, for pressure P, volume V, number of moles n, and temperature T,
PV = nRT.
where R is the gas constant, and n is the number of mole of gas
If the temperature is held constant, we obtain a simplified version called Boyle's Law, and if the pressure is held constant, we obtain Charles' Law.
Boyle's law:
Boyle's law states that the volume of a given mass of gas is inversely proportional to is pressure, provided that the temperature remains constant.
Mathematically,
P ∝ I/V
∴ PV ∝ 1
From the above mathematical expression, it shows that PV is a constant and does not change with pressure or volume.
∴ non of the options applies