A sample of coal was analysed as follows: Exactly 2.500 g was weighed into a silica crucible. After heating for one hour at 110ºC, the residue weighed 2.415 g. The crucible next was covered with a vented lid and strongly heated for exactly seven minutes at 950ºC. The residue weighed 1.528 g. The crucible was then heated without the cover, until a constant weight was obtained. The last residue was found to weight 0.245 g. Calculate the percentage results of the above analysis.

Q: Air at dry ball temperature 90 ° C and RH 8% is passed over the cooling coil so that the air dry…

A: Given that, Initial dry bulb temperature T1 = 90oC Initial Relative humidity RH = 8% Dry bulb…

Q: Paper is made from a suspension of fibers in water. The process begins by draining the fibers to a…

A: The type of dryer required to dry the paper is to be mentioned.

Q: Choose the correct option: 7. Which of the following metals best transfers heat? a) Gold b) Copper…

A: It is required to determine the metals that transfers the heat best.

Q: Select all that apply for  saturated vapor:     It refers to a point on a T-v diagram on a specific…

A: The saturated vapor is a substance that exists completely as vapor at its saturation temperature. On…

Q: Fuel flows in to the burner and is burnt with air provided from an air blower. * true O False O Nan

A: It is to be determined whether fuel flowing into the burner is burnt with air provided from an air…

Q: A nitriding heat treatment of a BCC steel normally requires 4 h at 1200-C. What temperature would be…

A: Given data: Time for heat treatment of BCC steel at 1200 0C = 4 h

Q: Aluminum has a specific heat of 0.897 J/g °C. How much heat is needed to raise the temperature of a…

A: Given: Specific heat = 0.897 J/g. C   Mass (m) = 79 gm Temperature: T1 = 25 C (ambient assumed), T2…

Q: A stirring rod used in the laboratory measures 12 inches. What is the length of the stirring rod…

A: length of the stirring rod in inches, l=12 inch. 1 foot=12 inch 1 yard=3 foot

Q: A thin, milk-like liquid is to be dried to produce a fine powder. What types of continuous,…

A:

Q: Why is it necessary to preheat the feed for distillation?

A: It is to be mentioned why pre-heating of feed is necessary for distillation.

Q: Glasses may be shaped by a variety of processes which include pressing, blowing, drawing, casting,…

A: HI, thank you for posting the question. As there are two questions asked in a single submission, our…

Q: Fermentation process can be done in a which is having stirrer and heating system.

A: the fermentation process is carried out in which system__ Select a suitable option.

Q: What is the difference between the melt temperature of a pure metal and an allo

A: alloy typically refers to metals that are formed from a mixture of two or more elements. One of the…

Q: In the steel industry, one of the most important processes done is known as quenching. This process…

A: Given details, Mass of steel cube,ms=7 kg initial Temperature of steel,Ts1=700 C=700+273=973 K Mass…

Q: Which of the following stament is true for the used additives for the thermoplastics? Fillers…

A: Thermoplastics are plastic polymers that become soft when heated and hardens on cooling. Additives…

Q: 1. A 10.0 gram metallic alloy at 90.0 Celsius was immersed in a 40.0 g Al calorimeter which contains…

A: Given, Mass of metal alloy=10 g Mass of Al calorimeter=40 g Mass of water=80.0 g Temperature of…

Q: In the air conditioning process, what has to be done first to the moist air?

A: Air conditioning is the process which is utilized for creating and maintain certain relative…

Q: 3. The specific heat of aluminium is 0.22 call/g-C°. that is the value of the specific heat in a)…

A: Consider Aluminum with its specific heat of  0.22 cal g-1°C-1.

Q: In the process of drying bagasse and water, which thermodynamic concept is used in the equipment of…

A: Dryers utilization conceivable is pretty related to optimized use of energy. There are two methods…

Q: The following physical properties for carcass cooling: p = 1073 kg / m3, cp = 2.48 kJ / kg ° K and k…

A: Given: Physical properties of the carcass: Density, ρ = 1073 kg/m3 Specific heat capacity, Cp = 2.48…

Q: A sample has initial mass of 10 grams. The quantity of water removed in the oven is 2 grams. The…

A: The initial mass of the sample, mi = 10 g Mass of moisture removed from the sample, mM = 2 g

Q: Why is it that when a bagasse is dried at above100 degrees Celsius at the dryer chemical process…

A: It is to be stated that why all water gets removed from bagasse if it is dried above 100 degree…

Q: 10 g of solid are added to 40ml of water . After stirring , some of the solid settles to the bottom.…

A:

Q: Q1// Calculate has the mass 3

A: Specific heat is defined as the amount of heat required to heat a unit mass of substance by 1 C…

Q: Determine the amount in each phase in the 25% Ni-Cu alloy at 1190 degrees centigrade.

A: The phase diagram of 25 % Ni-Cu alloy is given.

Q: Cold work means involving source of ignition, with the presence of sufficient heat; working with…

A: Answer is False  Cold work means involving source of ignition, with the presence of sufficient…

Q: A one room building has dimensions of 50'x 40' and is 10' high Wall "R" = 35, Roof "R"= 45. Assume 1…

A: To calculate  Tons of refrigeration required for a room with given dimensions in feet.

Q: Prepare a graph of the plotted points for the given drying data. All moisture are in erms of free…

A:

Q: Write notes on the following: (i) Diamond (ii) Graphite (iii) Fularine (iv) Silicons

A: i) DIAMOND Diamond is a stable structure of the thing carbon with its atoms organized in a crystal…

Q: Need answer with complete solution.   Calculate the theoretical flame temperature when ethylene at…

A: We need to calculate the theoretical flame temperature of ethylene . Given data are : Burning…

Q: In the drying of a wet solid, if the air temperature is ĐA and the temperature of surface solid is…

A: Given, Temperature of wet solid is θS. Temperature of air is θA.   Drying is a process of transfer…

Q: 2. What is the work of the humidification process? a) Vaporization b) Freezing c) Condensing d) None…

A: Humidification is the mass transfer operation in which the water is evaporated and this evaporated…

Q: Dispersion strengthening decreases electrical resistivity O reduces the electrical conductivity does…

A: Dispersion strengthening refers to the technique of growing the durability of a metal object by…

Q: A comparison between wet and dry gas?

A: Natural gas is the main source of many fuels that are found in the Earth core along with crude…

Q: A food product, having a dry weight of 30 kg is dried in a tunnel dryer. Drying was from top surface…

A:

Q: 1- One face of a copper plate 13 cm thick (k-200 W/m2C) is maintained at 673 K and the other face is…

A: given = x = 13cm = 0.13 m K = 200 W/m^c T1 = 673K and T2 = 373K  area = 2500 cm2 = 25m2 Q = -KAdTdxQ…

Units and Dimensions

Dimensions are the basic concepts of the measurement of quantities. Units are the means of expressing the dimensions. For instance, an area has a dimension of L2 and a unit of m2.