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What is the composition, in atom percent, of an alloy that consists of a) 91.5 wt% Ag and b) 8.5 wt% Cu? Assume that the atomic weights for silver and copper are, respectively, 107.87 and 63.55 g/mol.
How low would the blood glucose concentration have to fall to decrease the rate of glucose phosphorylation in the erythrocyte to 90% of Vmax
Calculate E°cell for the reaction between iodine and magnesium. I2(s) + Mg(s) Mg2+(aq) + 2 I-(aq) Use data from a table of standard reduction potentials as needed. possible answers are
What is the value of Ksp for Ag2SO4 if a maximum of 5.40 g is soluble in 1.00 L of water
What are five general properties of aqueous acids? Name some common substances that have one or more of these properties.
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl
Horizontally write the molecular orbital configuration for O2 2- , O2, and O2 -. Then state the bond order for each. Which of these compounds and ions are paramagentic and which are diamagnetic
how long it will take the same ammount of gaseous I2 to effuse from the same container under identical conditions.
mmeteorological balloon contains 375 l of helium at 29degc and 0.928 atm. if the volume of the balloon can vary
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH What is the pH after 38.5 mL of NaOH are added
The pressure inside a hydrogen-filled container was 2.10 atm at 21 C . What would the pressure be if the container was heated to 85 C
Suppose you prepared benzil by the oxidation of benzoin, describe how you could use TLC (thin layer chromatography) to decide when the reaction is complete.
A solution contains .60 M NH4OH and 1.5 M NH4Cl. what is the maximum concentration of Mg2+ that can be present in such a solution without precipitating Mg(OH)2
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