The answer is: A; Free Energy
Answer:
2-propanol
Explanation:
From the given information
2 drops of an unknown sample were said to be placed in a test tube followed by the addition of 2 ml of ethanol then gentle mixing. They then initiate a further addition of 2 drops of potassium permanganate reagent (KMNO₄) to the test tube and mixed the contents of the test tube thoroughly. After adding 2 drops of potassium permanganate reagent, the reagent oxidizes the secondary alcohols(2-propanol) to ketone(i.e acetone) and no further reaction will take place since there are no reactive C-H bonds left. The diagram attached below shows how the reaction proceeds.
Answer: The number of neutrons will increase as we move from left to right in a periodic table.
Explanation:
Atomic number is equal to the number of protons.
Mass number is the sum of number of neutrons and number of protons.
As we move from left to right, both the atomic number and mass number increases.
For example: As we move from Lithium to berrylium to boron to carbon to nitrogen to oxygen to fluorine to neon , the number of neutrons increase from 4 to 5 to 6 to 6 to 7 to 8 to 10 to 10.
Thus the number of neutrons will also increase as we move from left to right in a periodic table.
The correct answer is: 6.173 seconds.
Explanation:
The formula for half life (of reaction) is:
Half-life = --- (A)
Where,
K = Rate constant = 0.54
I = Initial concentration = 0.30 m
Plug in the values in equation (A):
Half-life =
Hence, the half life is 6.173 seconds.
Answer:
See explanation
Explanation:
-0.7ev = -13.6/n^2
n= 4
4--->1
4--->3, 3---> 2, 2--->1
E4-E1= -13.36(1/4^2 - 1/1^2) = 12.53 eV
E4-E3 = -13.36 (1/4^2 - 1/3^2) = 0.65 ev
E3-E2 = -13.36 (1/3^2 - 1/2^2) = 1.86 eV
E2- E1 = -13.6 ( 1/2^2 - 1/1^2) = 10.02 ev
a)
λ= 6.6 × 10^-34 × 3 × 10^8/12.53 × 1.6 × 10^-19
λ= 19.8 × 10^-26/20.048 ×10^-19
λ= 9.9 × 10^ -8 m
b)
λ= 6.6 × 10^-34 × 3 × 10^8/0.65 × 1.6 × 10^-19
λ= 19.8 × 10^-26/1.04 ×10^-19
λ= 19.0 × 10^ -7 m