Answer:
Explanation:
H⁺ = 1.2 x 10⁻²
pH = - log[H⁺]
= - log [ 1.2 x 10⁻²]
= - log1.2 + 2
= - .079 + 2
= 1.921 .
2Na + 2H2O 2NaOH + H2
Answer: YES
Explanation: The given chemical equation can be balanced by balancing the stiochiometric number of each and every element.
This rule is in accordance with the Law of Conservation of Masses which states that the masses of the elements in any chemical equation are constant at any instant of time.
Thus the given equation can be written as
Carbon is the atoms in the ground state can a valence electron beremoved using the least amount of energy. Hence option 3 is correct.
Valence electron is defined as the amount of electrons an atom must earn or lose to reach the electrical configuration of the nearby noble gas or inert gas. The quantity of electrons in the outermost energy shells is known as the valence electron number. The location of an element in the periodic table corresponds to how many valence electrons are present in that element.
The least amount of energy might be used to remove the carbon valence electron. Carbon one can observe that carbon has four valence electrons in the ground state electron configuration, two of which are in the 2s subshell and two of which are in the 2p subshell.
Thus, carbon is the atoms in the ground state can a valence electron beremoved using the least amount of energy. Hence option 3 is correct.
To learn more about valence electron, refer to the link below:
#SPJ2
≈ 0.31 m/s
v = d/t
= 2m/6.5s
= 0.3079 m/s
≈ 0.31 m/s
Answer:
0.305556 m / s
Explanation:
Speed = distance / time
2 metres = 0.002 km
6.5 sec = 0.00180556 hrs
Therefore,
Speed = 0.002 / 0.00180556
= 1.1 km / hr
= 0.305556 m / s