Answer:
12 more oxygen
Explanation:
An atom is the smallest particles that can take part in a chemical reaction
The given compounds are:
3Mg₃(PO₄)₂
Number of oxygen atoms = 3[2 x 4] = 24 oxygen atoms
For;
4Al₂O₃;
Number of oxygen atoms = 4 x 3 = 12 oxygen atoms
In 3Mg₃(PO₄)₂ , there are 24 - 12 = 12 more oxygen atoms than in 4Al₂O₃;
Atomic number is same as the number of protons in the element which is further equal to the number of electrons. As the number of electrons increases in the element, the atomic number of the element also increases.
In periodic table, elements are arranged in the groups, and these groups are columns starting from 1 to 18, elements are arranged in increasing order of atomic number. Elements are placed with difference of one atomic number.
First four elements present in the periodic table is:
atomic number is one (1).
atomic number is two (2).
atomic number is three (3).
atomic number is four (4).
Thus, the series of atomic numbers that represents the ordering of consecutive elements within the periodic table is the last option - 1, 2, 3, 4...
<u>Answer:</u> The rate law for the reaction is ![\text{Rate}=k'[H+][H_2O_2][Br^-]](https://tex.z-dn.net/?f=%5Ctext%7BRate%7D%3Dk%27%5BH%2B%5D%5BH_2O_2%5D%5BBr%5E-%5D)
<u>Explanation:</u>
Rate law is the expression which is used to express the rate of the reaction in terms of the molar concentration of reactants where each term is raised to the power their stoichiometric coefficient respectively from a balanced chemical equation.
In a mechanism of the reaction, the slow step in the mechanism determines the rate of the reaction.
The chemical equation for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution follows:

The intermediate reaction of the mechanism follows:
<u>Step 1:</u> 
<u>Step 2:</u> 
<u>Step 3:</u> 
As, step 2 is the slow step. It is the rate determining step
Rate law for the reaction follows:
......(1)
As,
is not appearing as a reactant in the overall reaction. So, we apply steady state approximation in it.
Applying steady state approximation for
from step 1, we get:
![[H_3O_2^+]=K[H^+][H_2O_2]](https://tex.z-dn.net/?f=%5BH_3O_2%5E%2B%5D%3DK%5BH%5E%2B%5D%5BH_2O_2%5D)
Putting the value of
in equation 1, we get:
![\text{Rate}=k.K[H^+][H_2O_2][Br^-]\\\\\text{Rate}=k'[H+][H_2O_2][Br^-]](https://tex.z-dn.net/?f=%5Ctext%7BRate%7D%3Dk.K%5BH%5E%2B%5D%5BH_2O_2%5D%5BBr%5E-%5D%5C%5C%5C%5C%5Ctext%7BRate%7D%3Dk%27%5BH%2B%5D%5BH_2O_2%5D%5BBr%5E-%5D)
Hence, the rate law for the reaction is ![\text{Rate}=k'[H+][H_2O_2][Br^-]](https://tex.z-dn.net/?f=%5Ctext%7BRate%7D%3Dk%27%5BH%2B%5D%5BH_2O_2%5D%5BBr%5E-%5D)
Answers:
(a) 30.55 °C
(b) 298 K and 77°F
(c) 204.44 °C and 477.44 K
(d) -320.8 °F and -196 °C
Explanation:
Converting °C into °F;
°F = °C × 1.8 + 32
Converting °F into °C;
°C = °F - 32 ÷ 1,8
Converting °C into K;
K = °C + 273
Converting K into °C;
°C = K - 273
Answer:
Detail is given below.
Explanation:
Similarities:
All are the forms of matter.
Solid, liquid and gases are made up of ions, atoms and molecules.
They have shape and volume.
Molecules in Liquid and solid are closer to each others.
Liquid and gases can flow very easily.
Liquid and solid both can not compressed very easily.
Differences:
Molecule of gases randomly move everywhere and occupy all available space but liquid and solid's molecules are not move as much easier as molecules of gases can.
The density of gases are very low as compared to the liquid and solid.
Gas molecules are at long distance from each other while in liquid and solid they are closer to each other.
The very weak inter molecular forces are present between gas molecules as compared to the liquid and solids.
Solids have definite volume and shape but liquid and gases acquire the shape of container.
In solids molecules are tightly pack and very close to each other while in liquid molecules are not tightly pack like in case of solid.
The densities of solids are also very high as compared to the liquid and gas.
There are very strong inter molecular forces are present between solid molecules.