Answer:
Sulfur
Explanation:
The reaction of the following question is as follows:
Na₂S₂O₃ (aq) + 2HCl(aq) --------------⇒2NaCl (aq) + H₂O(l) + SO₂(aq) + S (s)
Precipitate is sulfur.
Answer:
2.281*10^28 photons
Explanation:
Data
- Volume of coffee, V = 245 mL
- Temperature change of the coffee, ΔT = 62 - 25 = 37 °C
- Density of coffee, D = 0.997 g/mL
- Specific heat capacity of coffee, cp = 4.184 J/(g*K) = 4.184 J/(g* °C)
- wavelength of the microwave radiation, λ = 12 cm = 0.12 m
Mass of the coffee
m = D*V = 0.997 * 245 = 244.265 g
Energy (heat) absorbed by the coffee
Q = m*cp*ΔT = 244.265 * 4.184 * 37 = 37814.1761 J
Energy of the photon
E = h*c/λ
where h is the Planck constant ( 6.63 x 10^(-34) J*s) and c is the speed of light at vacuum (3*10^8 m/s)
E = 6.63 x 10^(-34)*3*10^8/0.12 = 1.6575*10^(-24) J
number of photons required = total energy required / energy per photon
n = 37814.1761/1.6575*10^(-24) = 2.281*10^28 photons
Carbon dioxide and water
C25OH+302= 2CO2+3H20
The rate of the forward reaction equals the rate of the backward reaction. A dynamic equilibrium is a chemical equilibrium between a forward reaction and the reverse reaction where the rate of the reactions are equal.
Rate of Sulfur dioxide : 2730.44 mL/s
<h3>Further explanation </h3>
Graham's law: <em>the rate of effusion of a gas is inversely proportional to the square root of its molar masses or </em>
the effusion rates of two gases = the square root of the inverse of their molar masses:
or
MW of N₂ = 28 g/mol
MW SO₂ = 64 g/mol