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A 50 g bullet is fired from a 10 kg gun with a speed of 500 m/s. What is the speed of the recoil of the gun?
a 24.6 ml volume of hcl solution reacts completely with a solid sample of magnesium carbonate producing 183 ml of
Problem- A typical 100-watt light bulb consumes 100J of energy per second. If a light bulb converts all of this energy to 500nm light, how many photons are produced each second
How many grams of dry NH4Cl need to be added to 2.00 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89. Kb for ammonia is 1.8 X10^-5.
Using your knowledge of particles, explain why the process of evaporation has a cooling effect on the skin. How would you describe the difference between a chemical change and a physical change? In your answer provide an example of each
A heater burns normal Butane (n-C4H10) using 40% excess air. combustion is complete . the flue gas leaves the stock at a pressure of 100 kpa and a temperature of 260 c
A 50.0-mL sample of 0.50 M HCl is titrated with 0.50 M NaOH. What is the pH of the solution after 28.0 mL of NaOH have been added to the acid?
If I have 2.4 moles of gas held at a temperature of 97 C and in a container with a volume of 45 liters, what is the pressure of the gas
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [PCl5]eq = 0.56 M, [PCl3]eq = 0.23 M, [Cl2]eq = 4.4 M. PCl5(g) PCl3(g) + Cl2(g)
Calculate the final pressure of the mixture.- Calculate the entropy change when the gases are identical.- Calculate the entropy change when the gases are different.
Problem- Explain the difference between UV/Vis and Fluorescence spectrophotometry. a) Which has greater sensitivity? b) Draw 2 block diagrams to illustrate the differences
Which one of these is liquid bromine, fluorine gas, or oxygen gas?
Use the appropriate standard reduction potentials to calculate the value of k at 25 degrees celcius for this reaction NiO(s)+2Cl-(aq)+4H+(aq)->Cl2(g)+Ni^+2(aq)+2H2O(l)
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