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Milk of magnesia is an 'over the counter' pharmaceutical preparation used as a laxative and for heartburn. It can be prepared by saturating water with magnesia (MgO). At 25 °C, a magnesia suspension has a pH of 10.16. Write a balanced equation for the equilibrium between the MgO(s) and the ions it produces in solution. Calculate the equilibrium constant for this reaction at 25 °C. What is the solubility of MgO in water?
The Ksp of AgCl at 25oC is 1.0 x 10^-10. Calculate the concentrations fo Ag+ and Cl- in a saturated solution of AgCl, and the molar solubility of AgCl.
draw the lewis structures and determine which of these molecules has a central atom that violates the octet rule.
Three colorless solution in test tubesm whit no labels arein a test rack on the laboratory bench. lying beside the test tubesare three labels, potassium iodide, KI, silver nitrate, AgNO3 andsolution sulfide Na2S
Draw the major organic product from reaction of 1-butyne with BH3 in THF, then H2O2, OH-. If no reaction occurs, writE ethane, CH3CH3.
The measured density of a certain gaseous amine at 0 C as a function of pressure is: P(atm) 0.200 0.500 0.800
Determine the rate law and the value of k for the reaction at 25oC
Chemical analysis of the two compounds reveals that 0.25 mol ACl 2 has a mass of 100.0 g and 0.50 mol BCl 2 has a mass of 125.0 g. Determine what are the molar masses of ACl 2 and BCl 2 ?
A solution was prepared by dissolving 10.12g of KCl.MgCl2 (277.85g/mol) in a sufficient water to give 2L. Calculate a.) the molar analytical concentration KCl. MgCl2 in this solution
A solution of a weak acid, HA, is prepared by dissolving 4.8 mmol of HA in 10.0 liters of a solution.The following values of absorbances were measured in a 1.0 cm cell in various buffers.
given the balanced equation representing a reacction2c2h67o24co26h2odetermine the total number of moles of oxygen that
Calculate the standard cell potential for each of the following cells then write the overall reaction. (These rxns are given in reduction order for each half-cell.)
The temperature of a lead fishing weight rises from 26 degrees Celsius to 38 degrees Celsius as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams.
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