Consider a combined gas–steam power plant that has a net power output of 450 mw. the pressure ratio of the gas-turbine cycle is 14. air enters the compressor at 300 k and the turbine at 1400 k. the combustion gases leaving the gas turbine are used to heat the steam at 8 mpa to 400°c in a heat exchanger. the combustion gases leave the heat exchanger at 460 k. an open feedwater heater incorporated with the steam cycle operates at a pressure of 0.6 mpa. the condenser pressure is 20 kpa. assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate ratio of air to steam, (b) the required rate of heat input in the combustion chamber, and (c) the thermal efficiency of the combined cycle.

not clear

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

what is the question?