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Question 1: What volume (in mL) of a 0.175 M solution of Ca (OH) 2 should be used to neutralize 22.8 mL of a 0.353 M H3PO4 solution.
Question 2: 2.65 L of an aqueous solution of NaBr. An excess of AgNO3 is added. 9.39 g of AgBr (s) are formed. What was the initial concentration of Br- (in mol / L) in this aqueous solution of NaBr?
Question 3: What is the pH of a 0.114 M HA solution if the ionization constant (KA) of this acid is 0.30.
Given the initial rate data for the decomposition reaction, A = B + C, determine the rate expression for the reaction [A],M = .0625, 0939, .125; -changeA/changet M/s = 5.44 *10^-7, 8.16 * 10^-7, 1.09*10^-6 (respectively)
Question- Consider the following cell: Pt|H2(g, 0.725 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.10 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrog..
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capacity of the calorimeter in kJ
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500-mL sample at 700. torr and 38 degrees celcius, she adds 19.50 mL of 0.01017 M aqueous iodine
Problem- If 38.5 mL of lead (II) nitrate solution reacts completely with excess sodium iodide solution to yield a 0.628 g of precipitate, what is the molarity of lead (II) ion in the original solution
What external pressures have moved mainstream medicine to accept alternative therapies? Have any alternative therapies been proven to work as well as standard treatments? Support your answer with information from the reading materials and/or inter..
Problem- The skeleton of acetic acid is shown here. Complete the structure by adding bonds and nonbonding electrons.
The species called glacial acetic acid is 98% acetic acid by mass (d=1.0542g/ml). What volume of glacial acetic acid must be added to 100 mL of 1.00M NaOH to give a buffer with a pH of 4.40?
How would you calculate the pH of a mixture made from adding 20.0 g of NaCH3CH2COO and 20.0 g of CH3CH2COOH to 100.0 mL of 0.10 M HCl.
Explain a wavelength of 925.4 nm has been detected from the emission of a hydrogen gas tube while under excitation from a high voltage source in a lab. This was caused by an electron dropping from a higher voltage source.
Given that the acidity constant for benzoic acid (HOBz) is Ka=6.5x10-5, calculate the basicity constant, Kb, of the benzoate ion (OBz-).
2 moles of ideal gas at 300K, with an initial volume of 25L, are compressed under an external pressure of 2800 torr. Assuming the temperature and the initial energy of gas do not change, what is the entropy change of this gas
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