Why is my hydrogen peroxied based iodine clock zero
Why is my hydrogen peroxied based iodine clock zero order with respect to sulphric acid the acid is 0.05moldm-3 and I use 25cm3 of it diluted down to 41cm3
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A 25.0 mL sample of 0.100 M lactic acid (HC3H5O3, pKa = 3.86) is titrated with 0.100 M NaOH solution. Calculate the pH after the addition of the following amounts of NaOH.
How many liters of oxygen gas can react with 84.0 grams of lithium metal at standard temperature and pressure?
A 27.0-gram sample of an unknown hydrocarbon was burned in excess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon?
If, in a certain experiment, over a specific time period, 0.0039 mol PH3 is consumed in a 1.8-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
Determine the molar concentration of an unknown solution given that its absorbance A is 0.450 Au.
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21.0 degrees C and the final temp. Calculate the heat of solution per mole of NaNO3.
The heat of solution of lithium carbonate is 3.06kJ/mol solute in 200 moles of H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3 in its saturated solution? Explain.
Since methylene chloride and water to not mix, by wetting a piece of filter paper with water addition of both layers to the filter funnel results in the aqueous layer passing through the paper and the organic layer remaining in the funnel.
Calculate the molarity of acetic acid in a viegar sample, knowing that 5.00 mL of vinegar requires 43.50 mL of 0.105 M NaOH to jut reach the phenolphthalein endpoint in a titration.
Calculate the uncertainty (in nm) in the position of an electron with the velocity of 2.00x103 m/s (the velocity is the same as in the preceding problem) and the uncertainty in the velocity is 1%.
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Read the sentences A-H below. Determine the best order and rearrange the sentences to create a well-written paragraph (topic, body, conclusion).
What would have been the most appropriate attitude for the Germans to adopt? What would you do next if you were in Mr. Soota's position? Explain why?
Imagine you are the newly elected chairman of your barangay Write a letter to the City mayor requesting for a possible sponsorship in a barangay event.
How are attitudes toward women culturally different? In what countries are women and men treated equally in the workplace?
Suggest the best communication channels for the following messages. Assume that all channels are available. Be prepared to explain your choice.
: Dr. Hicks shares some guidance when communicating complex scientific regulations to an audience that she has found successful.
Even within one culture, subgroups may have diverse perceptions. Compare the diverse perceptions that hunters, vegetarians, even political parties might have