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Explain which element is the central atom, Define how many bonds does the central atom form, is it polar or nonpolar, Define what is the direction of electronegativity?
List the precipitaion agent for the following groups cations and give the net ionic equation for the example geiven in the group.
The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67°C into 1.00 g of steam at 100°C
Consider the combustion reaction of acetylene (C2H2), H2O(l) is one of the products. Which of the following statements are correct? Choose all that apply.
Why do you need to keep a mixture of NaBH4 and MeOH in ice bath. Write down equation and explain why you have to put in ice immediately.
Which of the following is the ground state electron configuration for germanium, Ge, by the Aufbau and Pauli Exclusion principles?
Explain, perhaps with the use of drawings, why the 0.2 mL correction for the use of an inverted cylinder is subtracted from (not added to) the measured volume readings.
where a is constant and -infinity
How many grams of hydrogen gas are formed when 399.5 mL of 8.37 M HCl is used in the following reaction: Mg(s) + 2 HCl(aq) ? MgCl2(aq) + H2(g)
in the preparation of sulfanilamide why was aqueous sodium bicarbonate rather than aqueous sodium hydroxide used to
To obtain a 18.0% (w/v) solution of copper sulfate (CuSO4), M.W = 160) when only the crystalline salt is available (CuSO4 x 5H2O, M.W. = 250) what should the crystalline salt be weight to prepare 450.0 mL of solution
A student has a sample (less than 100 mg) that she would like to test for presence of lead. She has access two different atomic absorption spectrometers (flame and furnace) that could be used for analysis.
Write the reaction equation showing structural formulas for the formation of an ester from 2-methyl-1-butanol and acetic acid?
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