Methane gas $(CH_4)$ at $25^\circ C,$ 1 atm and a volumetric flow rate of $27 m^3/h$ enters a heat-treating furnace operating at steady state. The methane burns completely with 140% of theoretical air entering at $127^\circ C,$ 1 atm. Products of combustion exit at $427^\circ C,$ 1 atm. Determine a. the volumetric flow rate of the air, in $m^3/h.$ b. the rate of heat transfer from the furnace, in kJ/h.

Ethane $(C_2H_6)$ gas at $77^\circ F,$ 1 atm enters a well-insulated reactor operating at steady state and burns completely with air entering at $240^\circ F,$ 1 atm. Determine the temperature of the products, in $^\circ F.$ Neglect kinetic and potential energy effects.

What are the units for each of the following if concentrations are expressed in moles per liter and time in seconds? rate constant for a second-order rate law

Methyl alcohol $(CH_3OH)$ burns in dry air according to the reaction

$$\begin{aligned} \mathrm{CH}_{3} \mathrm{OH} &+3.3\left(\mathrm{O}_{2}+3.76 \mathrm{N}_{2}\right) \rightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ &+1.8 \mathrm{O}_{2}+12.408 \mathrm{N}_{2} \end{aligned}$$

Determine the a. air-fuel ratio on a mass basis. b. equivalence ratio. c. percent excess air.

A stream of moist air flows into an air conditioner with an initial humidity ratio of 0.6 kg(vapor)/kg(dry air), and a dry air flow rate of 1.5 kg/s. If the moist air stream mixes with a separate stream of water vapor at 0.4 kg/s, what will the humidity ratio be at the exit in kg(vapor)/kg(dry air)? a. 0.33 b. 0.87 c. 3.15 d. 4.35

A quantity of nitrogen gas in a piston-cylinder assembly undergoes a process at a constant pressure of 80 bar from 220 to 300 K. Determine the work and heat transfer for the process, each in kJ per kmol of nitrogen.

What is wrong with the following statement? $Because\ the\ well-insulated\ house\ stored\ a\ lot\ of\ heat,\ the\ temperature\ didn't\ fall\ much\ when\ the\ furnace\ failed$. Rewrite the sentence to convey the same information in a correct way.

How does the area of each triangle compare to the area of the parallelogram? Explain your thinking.

Solve each equation.

$$100 = \frac { a } { 13.2 }$$

A part of a collection of short-term interest earning assets that individuals are able to purchase is called a ?.

Find all solutions to the equation 35x ≡ 10 (mod 50).

You deposit $575 into a savings account that earns 4.6% interest compounded annually. Use a calculator to find the new balance of the account after 4 years. Round your answer to the nearest cent.

Draw Conclusions from Folk Literature Folk literature often transmits central ideas about a people's culture and way of life. Review the details you noted in your chart as you read. From this myth, what did you learn about the Iroquois'

• attitude toward nature?
• view of their gods?
• important food, games, and rituals?
• beliefs about good and evil?

Air at $30^\circ C,$ 1.05 bar, and 80% relative humidity enters a dehumidifier operating at steady state. Moist air exits at $15^\circ C,$ 1 bar, and 95% relative humidity. Condensate exits in a separate stream at $15^\circ C.$ A refrigerant flows through the cooling coil of the dehumidifier with an increase in its specific enthalpy of 100 kJ per kg of refrigerant flowing. Heat transfer between the humidifier and its surroundings and kinetic and potential energy effects can be ignored. Determine the refrigerant flow rate, in kg per kg of dry air.