Answer:
Because it gives them a full valence shell.
Explanation:
Answer: 66
Explanation: To find the mass number you would have to add the number of protons and the number of neutrons.
Boiling Point and Freezing Point., Surface Tension, Heat of Vaporization, and Vapor Pressure, Viscosity and Cohesion, solid State, Liquid State, Gas State.
I believe the answer in an inclined plane, because the ridge running along the sides run up the core. (Also, the other two answers are incorrect, so process of elimination)
<span>Part A:
Molar mass luminol = 177g/mol
10g = 10/177 = 0.0565 mol Luminol
Dissolved in 75mL solution = 0.075L
Molarity = 0.0565/0.075 = 0.753M solution
Part B.
There should be no problem with this part If .0L contains 3.0*10^-2 mol Luminol, then 2.0L will contain 2*3.0*10^-2 = 6.0*10^-2 mol
Part C:
Use equation:
M1V1 = M2V2
0.753 *V1 = (3.0*10^-2) * 1000
V1 = 30/0.753
V1 = 39.8 mL of stock solution contains 3.0*10^-2 mol Luminol.</span>
