Calculate the average density of the star
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
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A strip of metal is 250 mm long. It is stretched in two steps, first to 300 mm and then to 400 mm. Show that the total true strain is the sum of two true strains in each step, that is, that the true strains are additive.
Give one piece of experimental evidence that more than 1 mole of particles is formed when 1 mole of a salt dissolves in water
What is the density of hydrogen sulfide at 1.4 atm and 340 K?
Determine the torque that can be applied to a solid shaft of 20-mm diameter without exceeding an allowable shearing stress of 80 MPa.
Find ?Erxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is 5.86 kJ/°C.
To what temperature would a constrained rod of aluminium with a diameter of 50 mm need to be heated if it is expected to exert a force of 200 kN? Take the initial temperature to be 20 °C and the Young’s modulus as 70 GPa.
Search instead for a coffe contains 100 mL of H2O. intial temperature of calorimeter is temperature 23C.if 8.20g of cacl2 is added to calorimeter. what will be the final temperature of the solution in the calorimeter. the change in heat solution o
Explain how the relative strengths of solute-solute interactions, solvent-solvent interactions, and solvent-solute interactions affect solution formation.
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