Answer:
Organic fertilizers are those fertilizers that are not artificially produced but are natural and has carbon in them.
Fertilizers in the broad term are used to provide nutrient to the soil and boost growth of crops.
Some of the advantages of organic fertilizers to inorganic fertilizers are:
They do not make crusts on the soil, unlike inorganic fertilizers.
They help add structure to the soil because of the good water movement into the soil
They are easier on the soil because they feed good microbes.
Answer:
Explanation:
Assume that you have mixed 135 mL of 0.0147 mol·L⁻¹ NiCl₂ with 190 mL of 0.250 mol·L⁻¹ NH₃.
1. Moles of Ni²⁺
2. Moles of NH₃
3. Initial concentrations after mixing
(a) Total volume
V = 135 mL + 190 mL = 325 mL
(b) [Ni²⁺]
(c) [NH₃]
3. Equilibrium concentration of Ni²⁺
The reaction will reach the same equilibrium whether it approaches from the right or left.
Assume the reaction goes to completion.
Ni²⁺ + 6NH₃ ⇌ Ni(NH₃)₆²⁺
I/mol·L⁻¹: 6.106×10⁻³ 0.1462 0
C/mol·L⁻¹: -6.106×10⁻³ 0.1462-6×6.106×10⁻³ 0
E/mol·L⁻¹: 0 0.1095 6.106×10⁻³
Then we approach equilibrium from the right.
Ni²⁺ + 6NH₃ ⇌ Ni(NH₃)₆²⁺
I/mol·L⁻¹: 0 0.1095 6.106×10⁻³
C/mol·L⁻¹: +x +6x -x
E/mol·L⁻¹: x 0.1095+6x 6.106×10⁻³-x
![K_{\text{f}} = \dfrac{\text{[Ni(NH$_{3}$)$_{6}^{2+}$]}}{\text{[Ni$^{2+}$]}\text{[NH$_{3}$]}^{6}} = 2.0 \times 10^{8}](https://tex.z-dn.net/?f=K_%7B%5Ctext%7Bf%7D%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B%5BNi%28NH%24_%7B3%7D%24%29%24_%7B6%7D%5E%7B2%2B%7D%24%5D%7D%7D%7B%5Ctext%7B%5BNi%24%5E%7B2%2B%7D%24%5D%7D%5Ctext%7B%5BNH%24_%7B3%7D%24%5D%7D%5E%7B6%7D%7D%20%3D%202.0%20%5Ctimes%2010%5E%7B8%7D)
Kf is large, so x ≪ 6.106×10⁻³. Then
![K_{\text{f}} = \dfrac{\text{[Ni(NH$_{3}$)$_{6}^{2+}$]}}{\text{[Ni$^{2+}$]}\text{[NH$_{3}$]}^{6}} = 2.0 \times 10^{8}\\\\\dfrac{6.106 \times 10^{-3}}{x\times 0.1095^{6}} = 2.0 \times 10^{8}\\\\6.106 \times 10^{-3} = 2.0 \times 10^{8}\times 0.1095^{6}x= 345.1x\\x= \dfrac{6.106 \times 10^{-3}}{345.1} = 1.77 \times 10^{-5}\\\\\text{The concentration of Ni$^{2+}$ at equilibrium is $\large \boxed{\mathbf{1.77 \times 10^{-5}}\textbf{ mol/L}}$}](https://tex.z-dn.net/?f=K_%7B%5Ctext%7Bf%7D%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B%5BNi%28NH%24_%7B3%7D%24%29%24_%7B6%7D%5E%7B2%2B%7D%24%5D%7D%7D%7B%5Ctext%7B%5BNi%24%5E%7B2%2B%7D%24%5D%7D%5Ctext%7B%5BNH%24_%7B3%7D%24%5D%7D%5E%7B6%7D%7D%20%3D%202.0%20%5Ctimes%2010%5E%7B8%7D%5C%5C%5C%5C%5Cdfrac%7B6.106%20%5Ctimes%2010%5E%7B-3%7D%7D%7Bx%5Ctimes%200.1095%5E%7B6%7D%7D%20%3D%202.0%20%5Ctimes%2010%5E%7B8%7D%5C%5C%5C%5C6.106%20%5Ctimes%2010%5E%7B-3%7D%20%3D%202.0%20%5Ctimes%2010%5E%7B8%7D%5Ctimes%200.1095%5E%7B6%7Dx%3D%20345.1x%5C%5Cx%3D%20%5Cdfrac%7B6.106%20%5Ctimes%2010%5E%7B-3%7D%7D%7B345.1%7D%20%3D%201.77%20%5Ctimes%2010%5E%7B-5%7D%5C%5C%5C%5C%5Ctext%7BThe%20concentration%20of%20Ni%24%5E%7B2%2B%7D%24%20at%20equilibrium%20is%20%24%5Clarge%20%5Cboxed%7B%5Cmathbf%7B1.77%20%5Ctimes%2010%5E%7B-5%7D%7D%5Ctextbf%7B%20mol%2FL%7D%7D%24%7D)
Answer:
Mass of reactant and mass of product must be equal.
Explanation:
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In given photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.
Answer
The elements in increasing order of atomic radius: oxygen, carbon, aluminum, potassium
Explanation:
The distance from the center of the nucleus to the outermost shell of the electron is known as the atomic radius of an element. The atomic radius decreases rightward along each period (row) of the table due to the increase in effective nuclear charge (the charge of the nucleus equal to the number of protons). Across a period, electrons are added to the same energy level and the increasing number of protons causes the nucleus to exert more pull on these electrons, which makes the atomic radius smaller. Atomic radius increases down each group (column) of the periodic table because of the addition of electrons to higher energy levels, which are further away from the nucleus and the pull of nucleus weakens. Another reason for the increase in atomic radius is the electron shielding effect, which is the reduction of the attractive force between a nucleus and its outer electrons due to the blocking effect of inner electrons
While moving from left to right in the second period, c arbon comes before oxygen and so oxygen will have a smaller atomic radius than carbon. While moving down the periodic table, al uminum comes before potassium even if they are not in the same period. So aluminum 's atomic radius will be smaller than that of potassium but bigger than that of carbon and oxygen.
(hope that helps can i plz have brainlist it will make my day :D hehe)
Explanation:
Molecular formulas show correct and accurate number of each type of the atoms which are present in molecule.
On the other hand, structural formulas show arrangement of atoms and covalent bonds between them.
For example,
The molecular formula for carbon dioxide is 
The structural formula is O = C = O
