In a murder investigation, the crime scene investigators arrive 5am to examine the body. They found the body temperature to be 30 degrees celcius in a constant room temperature of 20 degrees celcius. (Normal body temperature is taken to be 37 degrees celcius). At 5.30 am the coroner arrived and measured the body temperature to
Please see the attached file for the fully formatted problem(s). Equilibrium Concentrations at a Certain Temperature and Pressure: Varying Reaction Coefficients 13.10. Peter, Paul, and Mary, members of a thermodynamics class, are asked to find the equilibrium composition at a particular T and P and for given initial amount
Certain crystals fluoresce when exposed to a short burst of ultraviolet light. The amount of light emitted by the crystals is both time and temperature dependent. The emitted light is maximum at the time of excitation, the output then decaying with time. Such materials can be used to measure temperature. Given are some relative
Design a cylinder to compress 68 degree farenheit air from atmospheric pressure to 200 psig without increasing the temperature more than 25 degrees farenheit. Show cylinder dimensions and discuss how far the piston must travel.
At 20 degrees celsius the surface tensions for water and mercury are 73dyn/cm and 470dyn/cm respectively. Find these values in SI units. A small capillary tube of 1mm diameter is placed into a container of 20 degree celsius water. will the level of the water in the tube move above or below the level of water? by what distance in
A brick oven 2 meters long at 20 degrees celsius is designed to allow for an expansion of 5mm without damage. To what temperature would the oven have to be heated to expand that much?
See attached file. A clock driven by a brass rod pendulum loses time when the rod expands as the temperature rises. Find the error in one day. A pendulum clock is driven by a brass rod of length Lo= 1.6 meters, pivoted at one end. The pendulum beats perfect time when the temperature is to= 21 degrees Celsius. If the
An aluminum and an iron bar are of unequal length. An iron bar whose length is 60.00 meters is at 0 degrees Celsius. An aluminum bar whose length is 60.05 meters is at +10 degrees Celsius. Find a temperature at which they are the same length. The coefficient of expansion of iron is 11 E -6 per C degree. The coefficient of ex
A 2 kg block of aluminum is originally at 10 degrees C. If 140 kj of heat is added to the block, what is the final temperature in degrees C?
A 0.5kg mass of aluminum at 0 degrees Celsius is put in 1 kg of water at 78 degrees Celsius in a Calorimeter of negligible mass. What is the resulting temperature at equilibrium?
A perfect gas occupying 0.2 cubic meters at a pressure of 1240 Kpa and a temp of 150 deg Celsius is expanded to 0.5 cubic meters. What is the final temp if the expansion takes place in the following ways: at constant pressure, Isothermally and according to the law pv^1.25=Constant?
Question: For a certain reaction, the activation energy is 52.1 kJ/mole. By what ratio will the rate constant change if the temperature is decreased from 175 degrees Celsius to 75 degrees Celsius?
Please see the attached file for the fully formatted problem(s). 1. What happens to the rate of leaching with increase in temperature? 2. State some common problems of packed columns. 3. What types of towers are suitable for corrosive and foamy liquids? 4. Why plate towers are preferred to packed columns when large tempe
Does the pressure of a gas increase or decrease when its temperature is INCREASED but the volume is CONSTANT (like when you apply heat to a can of hair spray) and explain why. Ideas are expressed.
Calculating a change in temperature given power, density, mass, dimensions, and specific heat capacities.
A class of 12 students taking an exam has a power output per student of 126 W. Assume that the initial temperature of the room is 19.5°C and that its dimensions are 6.20 m by 14.4 m by 3.30 m. What is the temperature (in °C, do not enter units) of the room at the end of 63.0 min if all the heat remains in the air in the room a
Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 479 Hz at 18 C. In one pipe the air temperature is increased to 21 C. If the two pipes are sounded together, what beat frequency results?
See attachment for problems. Chemistry review questions: specific heat, density, photon energy, wavelength characteristics, gas laws and unit conversion. 2. (4 points) Normal body temperature is 98.6°F. Calculate the temperature in a) Celsius b) Kelvin 4. (2 points) The specific heat of barium is 0.192 jo
Commercial cold-packs consist of solid ammonium nitrate and water. Ammonium nitrate absorbs 330 J of heat per gram dissolved in water. In a coffee-cup calorimeter, 2.00 g of ammonium nitrate are dissolved in 75.0 g of water at 30 degrees Celsius. Assuming that all of the heat is lost from the water, what is the final temperatu
Briefly describe the method to determine the surface temp of sun
Are the freezing temperatures of 1.00M solutions of NaCl in water and FeCl3 in water the same or different? Why or why not?