Answer:
Δx = 2.76 x 10⁻³ m = 2.76 mm
Explanation:
The distance between any two consecutive dark or consecutive bright fringes is given by:
Δx = λL/d
where,
Δx = distance between first and second dark fringe = ?
λ = wavelength of light = 546.1 nm = 546.1 x 10⁻⁹ m
L = distance between slits = 1.35 m
d = slit separation = 0.267 mm = 2.67 x 10⁻⁴ m
Therefore,
Δx = (546.1 x 10⁻⁹ m)(1.35 m)/(2.67 x 10⁻⁴ m)
<u>Δx = 2.76 x 10⁻³ m = 2.76 mm</u>
Answer:
Joules=F*d, watts= J/s, Kwh= kw*h(time)
Explanation:
First, we need to know... what are we measuring with the different units:
Joules: This unit is used to measure energy and work.
Watts: This unit is used to measure power, and is related to energy and work when we use the time. That is, power equals work or energy per unit of time.
KWh: This unit is used to measure the amount of power consumed, it is very common to see it on electric energy bills.
Answer: The boiling point of solution is
Explanation:
Elevation in boiling point:
where,
= boiling point of solution = ?
= boiling point of toluene =
= boiling point constant of toluene =
m = molality
i = Van't Hoff factor = 1 (for non-electrolyte)
= mass of solute = 7.94 g
= mass of solvent (toluene) = 69.2 g
= molar mass of solute = 254g/mol
Now put all the given values in the above formula, we get:
Therefore, the boiling point (in °C) of a solution is 112.16