OILRIG:
Oxidation is loss (of electrons)
Reduction is gain (of electrons)
so...
The first one is an oxidation half-equation as the Sn loses electrons;
The second one is a reduction half-equation as the Cl₂ gains electrons
Answer:
Explanation:
The formula for the heat absorbed is
q = mCΔT
Trial 1
m = 30.0 g
ΔT = 40.0 – 0 = 40.0 °C
q₁ = 30.0 × 4.184 × 40.0 = 5020 J
Trial 2
m = 40.0 g
ΔT = 40.0 – 30.0 = 10.0 °C
q₂ = 40.0 × 4.184 × 10.0 = 1670 J
q₁ - q₂ = 5020 – 1670 = 3350 J
0 Kelvin is the temperature where the is no kinetic energy, so the answer is 0.
<u>Answer:</u> The energy of the photon of light emitted is and energy emitted per mole of sodium atoms is
<u>Explanation:</u>
The relation between energy and wavelength of light is given by Planck's equation, which is:
where,
E = energy of the photon
h = Planck's constant =
c = speed of light =
= wavelength of photon = 330 nm = (Conversion factor: )
Putting values in above equation, we get:
To calculate the energy emitted per mole of sodium atom, we use the equation given by Planck's equation, which is:
where,
E = energy of the photon
= Avogadro's number =
h = Planck's constant =
c = speed of light =
= wavelength of photon = 330 nm =
Putting values in above equation, we get:
Hence, the energy of the photon of light emitted is and energy emitted per mole of sodium atoms is