I'm pretty sure the answer is hypothesis
Answer : The fraction of the molecules in the neutral (imidazole) form are, 0.799
Explanation : Given,
pH = 6.6
Using Henderson Hesselbach equation :
Now put all the given values in this expression, we get:
...........(1)
Now we have to determine the fraction of the molecules are in the neutral (imidazole) form.
Fraction of neutral imidazole =
Now put the expression 1 in this expression, we get:
Fraction of neutral imidazole =
Fraction of neutral imidazole =
Fraction of neutral imidazole =
Fraction of neutral imidazole = 0.799
Thus, the fraction of the molecules in the neutral (imidazole) form are, 0.799
Answer:
nine
There are nine orbitals in the n = 3 shell. There is one orbital in the 3s subshell and three orbitals in the 3p subshell. The n = 3 shell, however, also includes 3d orbitals. The five different orientations of orbitals in the 3d subshell are shown in the figure below.
Explanation:
Answer:
2.0 J/g°C
Explanation:
We are given;
- Quantity of heat as 10.0 kJ
- Mass of the substance as 100 g
- Temperature change is 50°C
We are required to calculate the specific heat capacity of the substance;
- We need to know that the quantity of heat gained by a substance is given by;
Quantity of heat = Mass × specific heat × change in temperature
That is;
Q = mcΔT
Rearranging the formula;
c = Q ÷ mΔT
Therefore;
c = 10000 J ÷ (100.0 g × 50°C)
= 2.0 J/g°C
Thus, the specific heat of the substance is 2.0 J/g°C
Answer:
Period 4
Explanation:
On the modern periodic table, potassium and calcium lie in the fourth period, Period 4.
Elements are arranged on the periodic table based on their atomic numbers or number of protons.
- Period 4 is made up of elements that have 4 energy levels.
- Potassium and calcium have 4 energy levels and belongs to the fourth period.