<h3>
Answer:</h3>
1.52 × 10⁻¹⁶ nm
<h3>
Explanation:</h3>
We are given,
Energy = 3.36 × 10⁻¹⁷ Joules
We are required to find the wavelength of light
We are going to use,
The formula, E = hλ/c
Where E is the energy, λ is the wavelength, h is the plank's constant and c is the speed of light.
h = 6.626 × 10^-34 J-s
c = 2.998 × 10^8 m/s
Working
From the formula;
= (3.36 × 10⁻¹⁷ J)(2.998 × 10^8 m/s) ÷ 6.626 × 10^-34 J-s
= 1.52 × 10⁻²⁵ meters
Therefore, the wavelength in m is 1.52 × 10⁻²⁵ m
Conversion
We need to convert m to nm
Conversion factor is 10⁹
Therefore;
1.52 × 10⁻²⁵ m to nm
will be; 1.52 × 10⁻²⁵ m × 10⁹
= 1.52 × 10⁻¹⁶ nm
Thus, the wavelength in nm is 1.52 × 10⁻¹⁶ nm
This question is providing two ions, Sn⁴⁺ and F¹⁻ so that the compound they form is asked to be named. At the end, according to the IUPAC rules, the name will be B: Tin (IV) fluoride.
<h3>Nomenclature:</h3>
In chemistry, nomenclature is used to assign the proper name of a chemical compound, so that it can be recognized in any part of the world. In this particular case, since this is a binary salt with a cation that has two oxidation states, Sn⁴⁺ and Sn²⁺, we should assign the correct roman numeral, which is tin (VI).
On the other hand, since fluorine takes a negative charge when forming binary salts, as a 1-, its assigned name would be fluoride. In such a way, by combining them, we find the name as B: Tin (IV) fluoride.
Learn more about nomenclature: brainly.com/question/6496952
Answer:
(D)
Explanation:
Acids are the species which furnish hydrogen ions in the solution or is capable of forming bonds with electron pair species as they are electron deficient species.
When an acid donates a proton, it changes into a base which is known as its conjugate base.
Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.
The acid and the base which is only differ by absence or presence of the proton are known as acid conjugate base pair.
Thus,
(A) does not have any conjugate base.
(B) is a base and does not have any conjugate base.
(C) The conjugate base of the acid, is but not vice versa.
(D) The conjugate base of the acid, is
(E) is a acid conjugate base pair.
Hence, (D) is the answer.
Answer:
A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
<u><em>Physical properties:</em></u>
Physical properties are those which have same composition. In other words, composition does not change, only state may be change like solid to liquid, liquid to gas, solid to liquid etc.
<u><em>Example. </em></u>
Water when freezes into ice, it is physical change, just state is change.
<em><u>Chemical properties:</u></em>
The chemical properties depend upon composition.
<u>Example:</u>
Formation of precipitates is an example of chemical change.
The 2, written as a subscript, counts for only the hydrogen. 3 H2O has 6 atoms of H and 3 atoms<span> of O. The 3, written as a coefficient, means that there are 3 “H2O”s.</span>
<span>Mg(OH)2 has </span>1 atom<span> of Mg, 2 atoms of O, and 2 atoms of H.</span>