<span>Liquid state must be the state of the substance in order to be analyzed by using uv-vis spectroscopy although gas phase measurements can be made using long path gas-tight cells. Absorption measures transitions from the ground state to the excited state.</span>
Answer:
C4H10 + 502 -> CO2 + 5H20
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a) The sizes of punch and blanking are equivalent to its diameters. The blanking die diameter is Db = 65 mm
Diameter of the blanking punch is,
dpunch = Db - 2c
Here, c = Ac (thickness)
For aluminium, Ac = 0.06
c = (0.06) (3.2 mm) = 0.192 mm
dpunch = (65 mm) - 2 (0.192 mm)
= 64.616 mm
b) The diameter of the punching punch is equivalent to the interior diameter of the washer.
Thus, diameter of the punching die is, Dh = 30 mm
Diameter of the punching die is,
ddie = Dh + 2c
= (30 mm) + 2 (0.192)
= 30.384 mm
Answer: 0.4375 mols of solute
Explanation:
The problem is asking for the amount of solute. We are given the value of molarity. The molarity is 0.25M. We know that molarity is 
. Since we are given the liters of solution is 1.75, we can use those values to solve for mols of solute.
[multiply both sides by 1.75 L]
There are 0.4375 mols of solute.
Answer:
The rate of the forward reaction and the rate of the reverse reaction are equal
The concentrations of the reactants and products no longer change.
Explanation:
The equilibrium state is a state of rest or motion of chemical system.
These are some of the condition for dynamic equilibrium of a system:
the systems must be involved in reversible chemical reactions.
the rate of forward reaction is equal to that of the reverse process.
the system offers no resistance to any change in any of the factors.
there is no change in concentration of each of the species in equilibrium with respect to time.
We can see that a system in equilibrium clearly identifies with the chosen options.
