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Explain which of the following substance has the lowest melting point: Al2O3, C, MgF2, NaCl, KBr.
what is a given and how much water must be mixed with concentrated hydrochloric acid to prepare 50 cubic cm of 6 molar hydrochloric acid solution?
A stock solution is prepared by adding 21 mL of 1 M AlCl3 to enough water to make 76 mL. What is the Cl- concentration of 40 mL of the stock solution?
the structure they gave me already has two nonbonding electrons on Bromine with no formal charge
The liberated hydrogen occupied a volume of 320ml when collected over water at 25 degrees celcius and the pressure of the gas was equalized to the atmospheric pressure of 750mm as in this lab. Calculate the equivalent weight of the metal, M.
calculate the volume in ml of .500 M HA , .5ooM NaA , and water required to make 250 ml of a buffer with a total concentration
if 50.00ml of Ba(OH)2 solution is mixed with 30ml of HBr solution, what is the pH of the resulting solution. (0.1385 M Ba(OH)2 and 0.2050 M HBr).
Given the following two solutions: 0.200 M HC2H3O2(aq) with pKa = 4.76 0.200M NaOH(aq) A mixture is made using 50.0 mL of the HC2H3O2 and 25.0 mL of the NaOH. What is its pH?
If 5.0 g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%? CO(g) + 2H2(g) -> CH3OH(l)
How do standard additions and calibration curves differ in quntification? What are the advantages and disadvantages of each?
The heat of neutralization of HCl by NaOH is H°rxn = -56.2 kJ/mol. How much heat is released when 125 mL of 1.750 M HCl is mixed with 195 mL of 0.667 M NaOH.
A standard basketball has a volume of 7.47 L. What is the volume of the basketball in gallons? The speed limit on many United States highways is 65.0 miles per hour
What mass of Li2SO4 is formed from mixing 24.5 mL of 1.32 molar LiOH with 10.2 mL of 2.43 molar H2SO4
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