If 3.18 x 10^23 atoms of iron react with 67.2 L of chlorine gas at STP, what is the maximum

At standard conditions of 1 atm and 273 K, the specific volume for any ideal gas is set at 22.4 L/mol. Therefore, the moles of SO₂ can be calculated as 5.9 L multiplied by 1 mol/22.4 L, equating to 0.263 mol. The molar mass of SO₂ is 64.066 g/mol, leading to a mass of 0.263 mol multiplied by 64.066 g/mol, resulting in 16.87 g of SO₂.

Calculation yields 209.53. The molar concentration is calculated by moles divided by volume. Given the volume of 750 mL, which translates to 0.75 L, the moles of CuBr₂ can be determined as molar concentration multiplied by volume, resulting in 1.25 × 0.75 = 0.9375. Mole count is derived from the mass of CuBr₂ divided by its molecular mass. The molecular mass of CuBr₂ is computed as 63.5 + 80 × 2 = 223.5, where the mass of Cu is 63.5 and that of Br is 80. Consequently, the mass needed amounts to 223.5 × 0.9375 = 209.53 g.

Answer:

i)   0.5071 kg/s

ii)  -1407.1 kJ/kg

iii)  204.05 kW

iv)  5.881

v)    9.238

Explanation:

Given Data:

evaporation temperature (T) = 4°C = 277.15 K

Condensation Temperature (T) = 34°C = 307.15 K

n (compressor efficiency) = 0.76

refrigeration rate = 1200 kJ/s

i) to find the circulation rate of the refrigerant

m =  =  ------- 1

Q = 1200 kJ/s

H2 = entropy at step 2 = 2508.9 (kJ/kg) (obtained from Table F)

H4 = entropy at step 4 = 142.4 (kJ/kg)

back to equation 1

m (circulation rate of refrigerant) = 0.5071 kg/s

ii) heat transfer rate in the condenser

Q = m (H4 - H3)

    = 0.5071 (142.4 - 2911.27)

    = -1407.1 kJ/kg

where H3 = H2 + ΔH23 = 2911.27 (kJ/kg) (as calculated)

iii) power requirement

w = m * ΔH23

   = 0.5071 (kg/s) * 402.37 (kJ/kg) =  204.05 kW

where: ΔH23 = = = 402.37 (kJ/kg)

iv) coefficient of performance of a cycle

W = Qc / w

  = 1200 kJ/s / 204.05 kW

  = 5.881

v) coefficient of performance of a Carnot refrigeration cycle

            =  277.15 / (307.15 - 277.15)

            = 9.238

If cells are provided with a growth medium containing 14C-labeled uracil, the macromolecules affected will be RNA. Uracil is a nucleobase that is part of RNA and DNA. In RNA, uracil pairs with adenine through hydrogen bonds.