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.75g of sodium hydroxide (NaOH) pellets is dissolved in water to make 2.0L of solution. Explain what is the pH of this solution?
The radius of a uranium atom is 149 pm. How many uranium atoms would have to be laid side by side to span a distance of 4.55 mm?
How many grams of Cu(OH)2 will precipitate when excess NaOH solution is added to 73.0 mL of 0.661 M CuBr2 solution
A gas sample was collected over water at 25.3 degrees Celsius, The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
What is the volume in mL of 0.833 M HCl(aq) needed to reach halfway to the equivalence (stoichiometric) point in the titration of 23.5 mL of 0.270 M ethylamine
Silver carbonate will decompose when heated as shown in the unbalanced chemical equation below. An impure sample containing 84.1 % Ag2CO3 by mass is heated to produce 9.02 g of oxygen (O2). Calculate the mass of the impure sample used in the react..
Use resonance forms to show the delocalization (over four carbons atoms) of the positive charge of the benzyl cation
Draw a molecule that will produce a spectrum containing two triplets appearing at different chemical shifts and both having an integral of 2 hydrogens.c
Substance A is a gray solid that consists of an alkaline earth element and carbon; the m% C in substance A is 37.5%. It reacts with substance B to form substances C and D. 4.0 x 1016 formula units of substance A weighs 4.26 micrograms.
an adult person radiates heat to the surroundings at about the same time as a 100-watt lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hrs?
Combustion reactions are exothermic. The heat of reaction for the combustion of butane, C4H10, is 687.8 kcal/mol. What is the heat of combustion for butane in kcal/gram?
Using the reactions below, write out the chemical expression for the fraction of all species that would be [Sn2+] (note this form does not need to be solved for K values, just the compounds themselves).
how many grams of metallic copper can be obtained when 54.0 grams of Aluminum react wit 319 grams of CuSO4?
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