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Want to make an experiment plan flow chart for chemistry lab on the ph levels of several brands of drinking water, using pH meter. Supply an example?
How many hydrogen atoms are in an unbranched alkene with one double bond and 3 Carbon atoms
a 5.96-g sample of homogentisic acid a weak organic acid having ka4.0 x 10-5 is dissolved in 35.0 ml of water and its
a 0.250 g quantity of an acid is titrated with 0.108 mnaoh. it takes 27.22 ml of naoh to reach the endpoint. what is
The volume percentage of CO2 in a mixture of that gas with N2 was determined by bubbling the mixture at 1.00 atm and 25*C through a solution of 0.0100 M NaHCO3 and measuring the pH. If the equilibrium pH was 6.50, what is the volume percentage of ..
What is the equilibrium constant expression for the following reaction- Pb2+(aq) + 2I?(aq)?PbI2(s) Choose from the list below and enter the letters alphabetical order.
How many molecules of NO2 are needed to react with 0.250 mol of H2O? How many grams of HNO3 are produced when 60.0 g of NO2 completly reacts? How many grams of HNO3 can be produced if 225 g of NO2 is mixed with 55.2 g of H2O
The activation energy for the reaction NO 2 (g)+CO 2 (g)?NO(g)+CO(g) is E a = 100kJ/mol and the change in enthalpy for the reaction is ΔH = -200kJ/mol. What is the activation energy for the reverse reaction?
1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are absorbed for each mole of CH4(g) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
Define and give examples of the following: oxidation reactions; reduction reactions; reactions that are neither
what are the technique that we encounter in the experiment of preparation of standard solutions and standardization of
The next 6 questions involve the calculation of concentrations of the molecular and ionic species in an aqueous solution that has an analytical composition of 0.060 M KH2PO4 + 0.460 M K2HPO4.
The initial mass of a radioisotope is 10.0g. If the radioisotope has a half-life of 2.75 years, how much remains after four half-lives?
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