The standard molar enthalpy of formation of calcium carbonate (CaCO) is -1206.9 kJ/mol. What will be the enthalpy for the formation of 75 g of CaCO?

Q: The edge length of the unit cell of Ta, is 330.6 pm; the unit cell is body- centered cubic. Tantalum…

A: Given: Ta = 330.6 pm           Tantalum density = 16.69 g/cm3 Required: Mass of Tantalum atom =?…

Q: A sample of Al203 with an available surface area of 871 m2 is suspended in 148 mL of 0.01 M KNO3.…

A: Initial surface area=871 m2 Moles of KNO3=1.48 x 10-3moles KOH required later=1.473 x 10-3moles…

Q: Q4:A/ Below is a unit cell for a metal. (1) To which crystal system does this unit cell belong? (2)…

A:

Q: The data below show the pressures of CO needed for the volume of adsorption (corrected to 1.00 atm…

A: Given data, Pressure P in KPa Temperature T in K 4.00 200 4.95 210 6.03 220 7.20 230…

Q: The viscosity of a thermoplastic polymer depends on its molecular weight and temperature as…

A: Given data: Viscosity range of a thermoplastic polymer = 0.155 Pa∙s – 0.16 Pa∙s The expression of…

Q: Pure water and alcohol are mixed to get a 50% alcohol solution. The density (g/ml.) of water,…

A: Since we are entitled to answer only 1 question, we will answer the first one as it is not mentioned…

Q: your

A: Given: The wavelength of Radiation = 459 nm Work Function of Metal = 4.5 eV

Q: 2. The experimental observations for the determination of enthalpy of vaporization of water is…

A: The data table given for the vapor pressure and temperature of the water is given as:   Vapor…

Q: Light of wavelength 221.0 nm striking a sample of tungsten causes electrons to be ejected with a…

A: This is a question from photoelectric effect. According to this theory if a light with an energy E…

Q: What units must the constant 0.644 have? = What should be the value of the constant when all units…

A: following expression is given in the question h=0.644k0.67vp0.5 cp0.33D0.5 μ0.17        1unit of…

Q: Calculate the corrosion rate Cr in units of mm/y, and the electrochemical rate in µg/cm2.s and…

A:

Q: Gaseous molecules can quickly spread throughout a room. Graham's Law states that rate of effusion…

A: Graham's law of effusion states that the rates of effusion of two different gases vary inversely  as…

Q: In cold climates, water (p = 1000 kg/m*) pipes may freeze and burst if proper precautions are not…

A: Density of the water,ρ=1000 kg/m3 Water shoots up to 34 m Calculate: (1) The gage pressure of water…

Q: Q1/The following data have been obtained from permeability test by gas. The test has been done in a…

A: It is given that,core sample has diameter of ,and data with initial and final pressure along with…

Q: (A) Calculate the Mv of poly(methyl methacrylate) using the table shown below. The MarkHouwink…

A:

Q: Q4/ A Petroleum cut has the following ASTM D86 distillation data:- Volume% 10 30 50 70 90 95…

A: TBP distillation is tedious and time consuming in comparison with ASTM method. Equations given by…

Q: A nickel was coated on a steel plate has a surface area of 0.1250 m² with a 0.00005m thick layer.…

A: To calculate the energy for vacancy formation in nickel (Ni), we need to use the equation derived…

Q: Q1) If 0.0353 ft of Ethyl Alcohol (with specific gravity of 0.789) is mixed with 0.0353 ft of water,…

A:

Q: ) Find the number of particles per unit volume as N2 (particles / m3)

A: Pressure = 1 atm Temperature = 20 oC Viscosity = 147 * 10-7 kg.m/s

Q: Q1/A cube of iron with sides 1 cm is placed on one side in an electrolyte solution for 200 hr. If…

A:

Q: the tube, and the wall temperature is maintained at 55°C. What fraction of the vapour will condense…

A:

Q: A small part with a surface area of 2.62 cm2 is plated with a gold coating that is .0005 mm thick.…

A: Here, we need to find the amount of gold coated on a given a sheet for a given thickness of gold.…

Q: A mixture of solids consists of 3kg berl saddle, 1kg lessing ring (L = Do ; Di = 0.5Do), and 2kg…

A: Given : Berl saddle = 3 kLessing ring = 1 kgRaschig ring = 2 kgbulk density of  Berl saddle = 850…

Q: Calculate the molecular weight of a polyethylen molecule with n= 500. Given M(C)=12.01 g/mole…

A:

Q: An electron in a hydrogen atom is excited from the ground state to the n = 3 state. True or false?…

A: Given that  an electron in a hydrogen atom  from ground state to n= 3 state      According to…

Q: The diffusion coefficient of Material A in Material B is given for two temperatures in the following…

A: Given data: Diffusivity of material A into B at 700 0C = 8.59 × 10-18 m2/s Diffusivity of material A…

Q: What is the absorption coefficient (in dm3/mol.cm) of 10.0 mg/L of a molecule that has a molecular…

A: Concentration of the molecule, c = 10.0 mg/L Molecular mass, M = 450 g/mol Absorbance, A = 0.15…

Q: 3 of the beaker at a speed of 5000 µm/s. What is the radius of the particles. b) What assumptions do…

A:

Q: Describe the substance at 100°C No partial credit. (Hint: each gridline upwards is 5°C) Show Your…

A: Melting is a physical process that results in the phase transition of a substance from a solid to a…

Q: . If sa

A: First of all we have to convert this all into CaCO3 equivalent. let first writes all given details,…

Q: A metal has a body-centered cubic lattice with a unit cell edge length of 2.866 Å (1 Å = 10-10m).…

A: For a body-centered cubic unit cell, the atoms are present at 2 different locations. Firstly, the…

Q: A hydrocarbon has a MW of 114 g/mol and has a composition of carbon 84.06% and hydrogen 15.94%. What…

A: Given: Molecular weight = 114 For 100g of the compound,  C = 84.06g H = 15.94g

Q: Given the following dissolved oxygen data for an aeration test at 15° C with Cs - 9 mg/L, the KLa…

A: The KLa is given by: KLa=-ln9-1-ln9-710-1 minKLa=-0.1540 min-1

Hazard Analysis and Design in Chemical Engineering

Hazard is the intrinsic property of a material or process which harms the people, buildings, or environment. Health, safety, hazard, risk assessment, loss prevention, and environmental consideration play an important role while designing a chemical processing plant. Hazard is often confused with risk. Risk measures the magnitude of loss and injury of likelihood incidents or the consequence and frequency of incidents.