Which type of data have elements in common but do not fit into rigid rows and columns in a table?.
1 answer:
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According to Arrhenius definition of acids, is an acid.
According to Arrhenius definition of acids and bases, acid is any substance that produces hydrogen ion in solution as its only positive ion.
Following this definition, let us now consider what happens when is introduced into a water;
(aq)-------> NH3(aq) +
(aq)
Hence, according to Arrhenius definition of acids, is an acid.
For another example of Arrhenius acids, see
Answer:
The absolute uncertainty is approximately 1.69 × 10⁻³
Explanation:
The volume needed for NaOH needed to make the solution = 16.66 ml
The wt% of the added NaOH = 53.4 wt%
The volume of the NaOH to be prepared = 2.00 L
The concentration of the NaOH to be prepared = 0.169 M
The molar mass of NaOH = 39.997 g/mol
Therefore, 100 g of sample contains 53.4 g of NaOH
The mass of the sample = 16.66 × 1.52 = 25.3232 g
The mass of NaOH in the sample = 0.534 × 25.3232 = 13.5225888 g ≈ 13.52 g
Therefore;
The number of moles of NaOH = 13.52/39.9971 = 0.3381 moles
Therefore, we have 0.3381 moles in 2.00L solution, which gives;
The number of moles per liter = 0.3881/2 = 0.169045 moles/liter
The molarity ≈ 0.169 M
The absolute uncertainty, u(c) is given as follows;
The absolute uncertainty, u(c) ≈ 1.69 × 10⁻³.
Explanation:
It is known that each metal has a different work function and it is just the energy required to remove the electron from the surface.
The relation between energy and work function is as follows.
where, = energy of photon
Q = work function
K.E = kinetic energy of electron
When the value of Q is large then the amount of energy required by the photon is also large and vice-versa.
And, when there is not sufficient energy to remove an electron from metal surface or energy is less than its work function then electron will not be removed.
On the other hand, when incoming photon will have enough energy then electron will be ejected.
In the given situation, light from laser A is not able to remove the electron from metal surface which means that energy of photon is less than work function Q.
As, both B and C are able to remove electron from the surface of metal. So, after the removal of electrons rest of the energy of photons is transferred to eject electrons and this energy is converted into kinetic energy.
As energy of B is greater than the energy of C and A has the lowest energy among all.
Therefore, order of energy from lowest to highest is as follows.
A < C < B
Now, the relation between energy and wavelength is as follows.
E =
where, = wavelength
So, energy is inversely proportional to wavelength. Therefore, increase in energy means decrease in wavelength.
Therefore, increasing order of wavelength is as follows.
B < C < A