Answer:
(i) Calculate the average rate of consumption of A in the first 15 seconds of reaction: -8.67X10^(-3) M/s
(ii) Calculate the average rate of production of C in the first 15 seconds of reaction: 0.0.17 M/s
(iii) Calculate the average rate of consumption of A in the last 15 seconds of the reaction: -3x10^(-3) M/s
(iv) Explain the difference between the rates of consumption calculated in (i) and that in (iii): At the beginning the reaction, is fast, then, when time passes, the reaction slows because there are less concentration of the reactants to produce C, so the rate is less.
Explanation:
The general formula to calculate any reaction rate is:
With this formula we can make the calculations, and we can know if r is positive or negative by knowing if we are calculating for a reactant or a product, positive for products, negative for reactants.
(i)
(ii)
In this case we need to multiply delta by 2, because 1 mole of A produces 2 moles of C:
As we know it is a product, r needs to be positive, so we change the sign of the result and we have: 0.017 M/s
(iii)
(iv)
Is already answered in the upper part.
Cycloalkanes are ring structures with the general formula: CnH(2n). Following are basic rules for naming cycloalkanes.
1. Parent Chain
Use the cycloalkane as the parent chain if it has a greater number of carbons than any alkylsubstituent.
If an alkyl chain off the cycloalkane has a greater number of carbons, then use the alkyl chain as the parent and the cycloalkane as a cycloalkyl-substituent.
2. Numbering the Cycloalkane
When numbering the carbons of a cycloalkane, start with a substituted carbon so that thesubstituted carbons have the lowest numbers (sum).
When two or more different substituents are present, number according to alphabetical order.
3. Halogen Substituents
Halogen substituents are treated exactly like alkyl groups
Answer: B) 10 ml
Explanation:
According to the dilution law,
where,
= molarity of stock solution = 1.0 M
= volume of stock solution = 2.0 ml
= molarity of dilute solution = 0.20 M
= volume of diluted solution = ?
Putting in the values we get:
Therefore, final volume reading is 10 ml
Answer: results are based on a small sample size
Explanation:
the other answers wouldnt make sense
Answer:
shiny
Explanation:
because metals surface are berkilau