Answer:
Frequency = 4.74 × 10¹⁴ Hz
Explanation:
Given data:
Wavelength of light = 633 nm (633 ×10⁻⁹ m)
Frequency of light = ?
Solution:
Speed of light = wavelength × frequency
Frequency = Speed of light / wavelength
Speed of light = 3 × 10⁸ m/s
Frequency = 3 × 10⁸ m/s / 633 ×10⁻⁹ m
Frequency = 0.00474 × 10¹⁷ s⁻¹
Frequency = 4.74 × 10¹⁴s⁻¹
s⁻¹ = Hz
Frequency = 4.74 × 10¹⁴ Hz
Answer:
b) heating, cooling
Explanation:
Heating will favour dissolution (it helps dissolving faster).
Cooling helps in crystallization.
A I think I could be wrong I’m not good at this
The volume of a gas that its pressure increase to 3.4 atm is calculated as follows
By use of boyles law that is P1V1=P2V2
V1=4.0 L
P1=1.1 atm
P2=3.4 atm
V2= P1V1/P2
(1.1 atm x 4.0 L)/3.4 atm= 1.29 L