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Write a balanced molecular equation and a net ionic equation for the reaction aluminum hydroxide with a solution of hydrobromic acid. Include the states of each species. a) balanced molecular equation. b) net ionic equation
If a process is carried out at constant pressure P and the volume V of the system decreases, then is delta V negative or positive and is the work w negative, positive, or zero
calculate the total length obtained when you add 12.3cm, 2.75dm, and 0.450m. give the answer in centimeters
The standard free-energy difference between the two chair conformations of isopropylcyclohexane is 9.2 kJ mol-1 (2.2 kcal mol-1). What is the ratio of concentrations of the two conformations (axial and equatorial) at 25 °C
How many grams of urea [(NH2)2CO] must be added to 585 g of water to give a solution with vapor pressure 2.63mmHg less than that of pure water at 30 degrees Celsius
The work function of copper is 437 kj/mol. Calculate the KE of the ejected electron if the frequency of light is 1.50*10^(15) Hz.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 88.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
Iodine-131 is used in medicine to assess thyroid gland function. How many protons and neutrons are present in an iodine-131 atom?
What would be the speed of the following particles if they had the same wavelength as a photon of red light ( = 750.0 nm)
To extract Al from glass, 100 mL of edta were mixed with .50 g of glass particles and allowed to equilibrate over time. If the glass contained .80 wt% Al and .35% of Al was extracted by the EDTA, what was the Al concentration of equilibrated EDTA ..
A buffer solution is .200 M in HNO2 and .185 M in NaNO2. What is the pH of the buffer system after 50 ml of .100 HCl is added to 250 ml of the buffer solution?? Ka of HNO2 = 4.6*10^4. (please show all work)
The strength of a bottle of vinegar was determined by adding potassium carbonate to a 20 ml sample of vinegar until bubbling ceased. The amount potassium carbonate added at the point the bubbling ceased was 1.134 grams. What is the concentration o..
find the number of representative particles in each substance a)3.00 mol Sn b)0.400 mol KCI c)7.50 mol SO2 d)4.80x103 mol NaI
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