A pure substance consists only of one element or one mixture
There is no physical change that can separate the compounds into more than one substance
This makes a compound a pure substance
Answer:
CH4(g) + Cl2(g) → CH3(g) + HCl(g) and the rate rule is k1 = [CH4][Cl2]
Explanation:
Firstly, we must remember that the substitution reaction between halogens and alkanes to yield halogenoalkanes does not proceed by ionic mechanism rather it proceeds by free radical mechanism.
Now, if we look at the rate determining step as shown in the question, the elementary reaction equation of that step is not balanced.
Hence, the correct elementary reaction equation for the rate determining step and the rate law is; CH4(g) + Cl2(g) → CH3(g) + HCl(g) and the rate rule is k1 = [CH4][Cl2]
Answer:
Molarity of solution = 0.77 (Approx.)
Explanation:
Given:
Moles of LiCl = 0.529
Volume of water = 687
Find:
Molarity of solution
Computation:
Molarity of solution = [Moles/Volume]1000
Molarity of solution = [0.529/687]1000
Molarity of solution = 0.77 (Approx.)
<u>Answer:</u> The average atomic mass of element bromine is 80.4104 amu.
<u>Explanation:</u>
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
.....(1)
- <u>For _{35}^{79}\textrm{Br}[/tex] isotope:</u>
Mass of isotope = 78.9183 amu
Percentage abundance of isotope = 50.69 %
Fractional abundance of isotope = 0.5069
- <u>For isotope:</u>
Mass of isotope = 80.9163 amu
Percentage abundance of isotope = 49.31 %
Fractional abundance of isotope = 0.4931
Putting values in equation 1, we get:
Hence, the average atomic mass of element bromine is 80.4104 amu.