Answer:
Pretty sure it would be erosion and deposition.
Explanation:
Hope this helps.
It is being aware of things around you and the decisions you make. Being in control of your own actions.
Answer:
2.5 L will be the volume of HNO₃
Explanation:
To find out the total volume of nitric acid in liters we begin from molarity.
HNO₃ solution is 0.10 M
This means that 0.10 moles are contained in 1L of solution.
As we used 0.25 moles of nitric, let's determine the volume by a rule of three:
0.10 moles of nitric acid are contained in 1L of solution
0.25 moles of nitric acid will be contained in (0.25 . 1) / 0.1 = 2.5 L
Explanation:
B has a correct statement
Answer:
a. 0.933 M⁻¹.cm⁻¹
b. 0.003 M/s
Explanation:
a. The molar absorptivity coefficient (ε) is the ability of 1 mol of the substance to mitigate the light of a wavelength. It means that it's a measure of how strong a substance can absorb radiation. It can be calculated by the absorbance (A), the concentration (c) and the length of the cuvette (l).
ε = A/(c*l)
Thus, at t = 0, for the blue reactant, A = 0.77, c = 0.75 M, l = 1.10 cm.
ε = 0.77/(0.75*1.10)
ε = 0.933 M⁻¹.cm⁻¹
b) The rate of the reaction can be found by the rate of desapering of the blue reactant. Let's find the concnetration when t = 30.00 s:
ε = A/(c*l)
0.933 = 0.67/(c*1.10)
1.10c = 0.67/0.933
1.10c = 0.7181
c = 0.65 M
Thus, the rate is the variation of the concentration divided by the time variation:
r = (0.75 - 0.65)/30
r = 0.003 M/s
Because the coefficient of the blue reactant is 1, the rate of reaction is equal to the rate of disappearing of B, 0.003 M/s.