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A student studied the clock reaction described in this experiment. She set up Reaction Mixture 2 by mixing 20 mL of 0.010 M KI, 10 mL 0.001 M Na2S2O3, 10 mL 0.040 M KBrO3, and 10 mL 0.10 M HCl using the procedure given. It took about 45 seconds for the color to turn blue.
b. what was the relative rate of reaction (1000/t)?
A 50.00 ml sample of water was treated as above and the I2 titrated with 0.01136 M Na2S2O3, of which 8.11 ml were required to reach the end point. Determine the concentration of the dissolved O2 in M (moles/L) and ppm (mg/L).
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
How much energy is required to boil 45.5g of water at 100 degrees C at sea level? The molar heat of vaporization of water is 40.6 kJ/mol.
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water
Write a balanced equation for the reactant, then identify the type of reaction it demonstrates remember your diatomic atoms complete reaction
You have prepared a saturated solution of X at 20 degress Celsius using 27.0g of water. How much more solute can be dissolved if the temperature is increased to 30 degress Celsius
An 11.0 gram sample of CaCl2(s) is dissolved in 125 grams of water with both substances at 25.0°C. If the final temperature of the mixture is 39.2 °C.
solution containing 1.543g Cu(NO3)2 to reduce any copper ions present. What mass of copper was reduced in this process?
How do i calculate the aveage current that flowed thorugh an electrolytic cell from the delta [OH-] (3.910), volume of the solution (30mL) and the time of electrolysis (15min)
What are the principal natural sources of hydrogen? What are the principal methods for the commercial preparation of hydrogen?
seperate two compounds efficiently, what alternatives would one consider to effect clean separation by distillation?
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