Answer:
Hardness is a physical property
Friedrich Mohs developed the standard hardness scale.
Diamond can scratch quartz.
Explanation:
hope it helped! ^_^
Answer:
615ml
Explanation:
Vol(ml) = (gms solute)/[(Molar Answer => Conc)(formula Wt solute))] = (100g)/{(1.4M)(116g/mol)} = 0.615L = 615ml.
Assume that your electrical power company gets its energy from a hydroelectric dam. Outline all of the energy changes that occurred from the falling water that turned the generators at the dam to the hot air that was produced from your hair dryer this morning.
Answer:
The maximum kinetic energy of electron is = 2.93 ×
Joule
Explanation:
We know that total energy
------------ (1)
Here h = plank's constant = 6.62 ×
J s
c = speed of light = 3 ×
= 261 nm = 261 ×
m
Put all these values in equation (1) we get
E = 7.6 ×
J
We know that
Total energy = Energy to remove an electron + K.E of electron
Energy to remove an electron = 
Energy to remove an electron = 4.67 ×
J
K.E of electron = Total energy - Energy to remove an electron
K.E of electron = 7.6 ×
- 4.67 × 
K.E of electron = 2.93 ×
Joule
Therefore the maximum kinetic energy of electron is = 2.93 ×
Joule
Answer: 5 plates
Explanation:
Because you have 5 sandwiches total