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Compare the pH values in the dilution experiment for the strong acid(HCl) and the weak acid (acetic acid). HCl : 10^-2 : 3.03 10^-3 :4.48 10^-4:5.95 10^-5:6.55 10^-6:6.60 10^-7:6.70
acetic acid : 10^-2 : 5.01 10^-3 :5.69 10^-4:6.46 10^-5:6.94 10^-6:7.04 10^-7:7.62
Do the pH values increase at the same rate across the wells?
Will nitric acid digest and contaminate a sample with additional carbon if it is filtered with a cellulose filter paper?
Ethanol, C2H5OH, is mixed with gasoline and sold as gasohol. Calculate the grams of ethanol needed to provide 388kJ of heat.
The acid dissociation constant for HClO2 is Ka = 1.1 x 10-2. You add 1.08 g of HClO2 to 427 ml of 0.0150 M NaClO2 solution. What are the equilibrium concentrations of H3O+, ClO2-, and HClO2
Label the anode, cathode and direction of e- flow an write the half reaction equation for each electrode
The isomerization of methyl isocyanide, CH3NC -> CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199 degrees celcius and 12.5 min at 230 degrees celcius. Calculate the activation energy for this reaction.
Find reactant and product information, Balance the following reaction: Mn + HCl --> MnCl2 + H2, If you have 100g of Mn and 100g of HCl find
A 890 mL sample of NO2 gas is at STP. If the volume changes to 644 mL and the temperature changes to 20ºC, what will be the new pressure in atmospheres?
What is the pH of a phosphate buffer when [H2PO4-] = 40 mM and [HPO42-] = 30 mM?
Which of the following elements has the Lewis symbol below, where Sy represents the elemental symbol? Sy :
A gas originally at 27 degrees celsius and 1.00 atm pressure in a 3.9 L flask is cooled at constant pressure until the temperature is 11 degrees celsius. determine the new volume of the gas and express your answer in Litre.
A sample of gas has a mass of 38.7mg . Its volume is 224mL at a temperature of 57 degrees Celsius and a pressure of 868torr . Find the molar mass of the gas.
Detremine the concentration of chromate solution - Potassium chromate has an absorbance value
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