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In the following experiment, the water in the glass is stirred by slowly lowering a weight (m=3kg) through a series of pulleys. If the 3kg weight is lowered 10m, the stirrer spins, but eventually all of the kinetic energy of the stirrer is turned into heat. a. How much energy is transferred into the water by dropping the 3 kg weight 10m? Assume frictionless pulleys. b. How large would the temperature rise be if there is 2 kg of water in the container? Assume no heat losses, constant pressure of 1 atm, and that the temperature of water is initially at 25 C.
If all the energy obtained by by burning 1.26 lb of butane (fuel value is 10.85 kcal/g) is used to heat 126.0 kg of water at an initial temp of 19.7C, what is the final temperature.
Find the reaction order using a Powell plot or the fractional-life method and also estimate the rate constant
A sample of 0.0020 mole of HCl is dissolved in water to make a 1500. mL solution. Calculate the molarity of the HCl solution, the [H3O+], and the pH. For a strong acid such as HCI,.
Consider the heterogeneous equilibrium process shown below. C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is found to be 3.20 atm. If the equilibrium constant KP is 1.52,
A 4.70 g nugget of pure gold absorbed 255 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).
Determine the Volume of air and partial pressure of nitrogen, oxygen, water vapor and air
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
Calculating concentration of an ion, Given the concentration of hydroxide ions, use the ion product constant of water to calculate the concentration of the other ion at 298 K
The initial concentration of the reactant A in a first-order reaction is 1.2M. After 69.3 s, the concentration has fallen to 0.3M. What is the rate constant k
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name and origin imply, it stinks!
477 J amount Energy is added to a 74.0 grams sample of H 2 O at a temperature of 21 degree Celsius. Determine what will be the final temperature of the H 2 O?
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