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What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2, Ksp = 1.8 × 10-11. A. 1.5 × 10-13 M B. 4.1 × 10-5 M C. 1.2 × 100 M D. 3.3 × 10-4 M E. 2.7 × 10-8 M
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. Write and equation that shows how this buffer neutralizes added bases.
Place the following compounds in order of increasing strength of intermolecular forces. CH4, CH3CH2CH3, CH3CH3
Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) = Na2CO3(s) + CO2(gas) + H2O(gas) Given that for this reaction delta H = 135.5 KiloJoules and delta G = 33.1 KiloJoules at 25 degrees C, at what temperature will the reaction b..
determined using x rays methods. Remember a, b, c are unit cell dimensions . X', y' and z' are intercepts. Only the information you need is given . You may encounter as unusual rarely formed face
Calculate pH of saturated solution of dicalcium phosphate (CaHPO4) in water if its solubility is 3.16x10-4 m. How much solubility of CaHPO4 will change when 1.0x10-3 m MgCl2 is added to the same saturated solution of dicalcium phosphate?
identities of the components in a mixture by Gas chromatography may be determined by the technique called "spiking".
A concentrated solution is 68% nitric acid in water and has density of 1.39 g/ml. How many mL of this nitric solution will completely and exactly react with 143g of cu metal
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100M solution of ammonia, NH3, to prepare a buffer solution that ahs a pH of 8.80?
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
Which of the following is not an application of colligative properties? A) reducing boiling points of pure liquids at increased altitude B) adding silver to mercury to lower the vapor pressure of mercury C) melting snow by application of salt D) d..
Water has a heat opf vaporization of 40.7 kJ/mol and a specific heat of 4.18 J/grams degrees celsius. How many Joules of heat are required to boil a cup of tea?
If 138 mL of wet H2 is collected over water at 24°C and a barometric pressure of 748 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr at 24°C.)
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