certain coal has the following ultimate analysis:   Carbon = 69% Nitrogen = 5% Hydrogen = 2.5% Sulfur = 7%   Determine the amount of oxygen in decimal form if the heating value of fuel is 27461.4 kJ/kg.

*29. ssm The drawing refers to one mole of a monatomic ideal gas and shows a process that has four steps, two isobaric (A to B, C to D) and two isochoric (B to C, D to A). Complete the following table by calculating AU, W, and Q (including the algebraic signs) for each of the four steps. B -800.0-K isotherm -400.0-K isotherm 200.0-K isotherm D Volume Pressure

The table below shows the melting point, specific heat, and heat of fusion of different solids. Suppose the same mass of these solids are at their respective melting point temperatures, which solid requires most amount of heat to melt? Substance Melting Point Heat of Fusion Specific Heat 79.71 cal/g 5.85 cal/g 21.07 cal/g 15.39 cal/g 31.98 cal/g 0.50 cal/gC° 0.033 cal/gC° 0.056 cal/gC° 0.030 cal/gCo 0.093 cal/gC° Ice 0°C Lead 327°C Silver 961°C Gold 1063°C Copper 1083°C O lead ice O gold O silver O O O O

Answer question 2 based on the results of question 1. You have a natural gas furnace in your home that used 78,500 cubic feet of natural gas for heating last winter. Your neighbor has a furnace that burns heating oil, and used 516 gallons of heating oil last winter. You can convert the natural gas and heating oil consumption data into Btu to determine which home used more energy for heating. Natural gas BTU:  1,028 Btu per cubic foot Oil BTU: 138,590 Btu per gallon   Natural Gas BTU= 80698000 Btu Oil BTU                = 71512440 Btu   The home that used a natural gas furnace used more energy for heating. 2. You need a new furnace for your home, and you are comparing systems that use natural gas and heating oil. One factor to consider is the cost of fuel. You can compare the price of the fuels on an equal basis by dividing the price per unit of the fuels by the Btu content per unit of the fuels to get a price per million Btu. Assume Natural gas price = $10.50 per thousand cubic…

1. How does the presence of Nitrogen in air affect the outcome of a combustion process? How does the presence of moisture in air affect the outcome of a combustion process? and What are the approximate chemical compositions of gasoline, diesel fuel, and natural gas? BoldItalicUnderline

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5.7. For the "standard atmosphere" shown in Fig. 5.5, perform the following calculations= (a) Derive the pressure-height relation for the troposphere. (b) Calculate the pressure at the troposphere-stratosphere boundary. (c) Derive the pressure-height relation for the stratosphere.

Pressure (atm) 1,000 100 10 Solid (Ice) 1.0 0.1 0.01 Problem 2 At a pressure of 0.1 atm, determine (a) the melting temperature for ice, and (b) the boiling temperature for water. 0.001 a -20 0 0 20 Liquid (Water) 40 60 Temperature (°C) 1 Vapor (Steam) 80 100 120 Pressure-temperature phase diagram for H₂O. Intersection of the dashed horizontal line at 1 atm pressure with the solid-liquid phase boundary (point 2) corresponds to the melting point at this pressure (T=0°C). Similarly, point 3, the intersection with the liquid-vapor boundary, represents the boiling point (T = 100°C).

P-4 Please I need help with this question needed a very clear and step-by-step explanation and needed with clear handwriting please, will be really appreciated your help.