Answer:
Because it uses the residual energy of the fluid used by the first engine.
Explanation:
A combined cycle power generation counts with two heat engines that work in tandem from the same source of heat. The engines turn the energy into mechanical energy.
The cycle is much more efficient than the other, almost 60% more.
I hope this answer helps you.
Answer:
0.128 g
Explanation:
Given data:
Volume of gas = 146.7 cm³
Pressure of gas = 106.5 Kpa
Temperature of gas = 167°C
Mass of oxygen gas = ?
Solution:
Volume of gas = 146.7 cm³ (146.7 /1000 = 0.1467 L)
Pressure of gas = 106.5 Kpa (106.5/101 = 1.1 atm)
Temperature of gas = 167°C (167 +273.15 = 440.15 K)
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
n = PV/RT
n = 1.1 atm× 0.1467 L / 0.0821 atm.L/ mol.K × 440.15 K
n = 0.1614 / 36.14 /mol
n = 0.004 mol
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 0.004 mol × 32 g/mol
Mass = 0.128 g
The volume of sample = 2.25(1.5)(2.25) = 7.59375 cm3
Density = mass / volume
Density = 55.75 / 7.59375 = 7.34156 g/cm3
As the density of iron is 7.86 g/cm3 instead, it is not iron
Answer C. is correct:
(molar mass of Mg) + (2 x molar mass of O) + (2 x molar mass of H)
:-) ;-)
Answer:
group 1, 2 and 3 tend to get rid of electrons and start to form compounds with groups 7, 6, and 5.
Explanation: