Answer: The element is represented as Aluminium-27
Explanation:
Atomic number is defined as the number of protons or number of electrons that are present in an electrically neutral atom.
Atomic number = Number of electrons = Number of protons = 13
Mass number is defined as the sum of number of protons and neutrons that are present in an atom.
Mass number = Number of protons + Number of neutrons = 13 + 14 = 27
Thus the element with atomic number of 13 is aluminium and its mass number is 27. Thus it is represented as Aluminium-27
The compound sodium sulfate is made of sodium ion and sulfate ion.
The formula can be written as Na₂SO₄.
The cation present in this compound is Na⁺ and the anion is SO₄²⁻.
The compound barium sulfate is made of barium ion and sulfate ion.
The formula can be written as BaSO₄.
This compound contains the cation Ba²⁺ and anion SO₄²⁻.
From the above , we can see that both the compounds have common anion which SO₄²⁻
So, the sulfate, SO₄²⁻ is the common ion when sodium sulfate is added to a solution of barium sulfate
Some of the negative impact of disruption in water cycle are adverse environment, with affected farming, hydroelectricity, and deforestation.
The water cycle has been operated in the environment for the conversion of water in the different states. The water cycle has been operated with the conversion of water from the water body to the clouds by evaporation.
The evaporated water has resulted in clouds, that have been condensed and precipitated in the form of rain. The water cycle helps in maintaining the water balance in the ecosystem. It made the water available for use as well.
The drought has been the condition of the scarcity of water. In this condition, there has been a disruption of the water cycle. Some of the negative impacts resulting from the disruption of the water cycle are:
- Adverse environmental conditions
- Farming affected by water scarcity
- Unavailability of hydroelectricity
- Deforestation
For more information about water cycle, refer to the link:
brainly.com/question/1151425
Answer:
The energy of photon is 33.28×10⁻¹⁴ J
Explanation:
Given data:
Frequency of photon = 5.02×10²⁰ Hz
Energy of photon = ?
Solution:
E = h.f
h = planc'ks constant = 6.63×10⁻³⁴ Js
by putting values,
E = 6.63×10⁻³⁴ Js × 5.02×10²⁰ Hz
Hz = s⁻¹
E = 33.28×10⁻¹⁴ J
The energy of photon is 33.28×10⁻¹⁴ J.
