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How many moles of HCl need to be added to 15.0 mL of 0.50 M NaZ to have a solution with a pH of 6.50? (Ka of HZ is 2.3e-5). Assume negligible volume of the HCl. Can you show the work too please?
sample of hydrogen gas initially at 29C and 7.0 L iscooled until its final volume is 2.9 L. What is its final temperature
An unknown solid compound containing Pb2+ ion was mixed with 15 mL of 2.0 M HNO3. The mixture bubbled profusely. After complete reaction, it was found that 0.020 moles of CO2 were produced and the original solid was completely consumed.
what would the final common temp be assuming no heat loss? Use Cp for ethanol = 60.0 J K -1 mol -1 and Cp for Copper = 0.380 J K -1 g -1.
When the equation below is properly balanced, the correct sequence of coefficients is? NaCl(s) + SO2(g) + H2O(l) + O2(g) NaSO4(s) + HCl(g)
determine the molar mass of the substance if 120.0 grams of a pure sample contained 24.0 mol of the substance. express
If a bottle of nail polish remover contains 176 mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/mL.
Which formula represents a salt?
0.74 L of a 0.41 M solution is diluted to a final volume of 3200 mL. What is the resultant molarity?
What are all the possible products for the following alkane substitution reactions?
Which term is used to describe mechanism of reaction of 4-methy-2-pentene with sulfuric acid and water as a solvent to produce pantanol. a)tertiary carbanion b)2-methylpentoxonium c)sp hybridized pentyne d)vicinal dihydroxide e)hydroxide ion
what is the percentage yield if 400 grams of chlorine react with excess potassium bromide to produce 820 grams of bromine
A particular element exists in two stable isotopic forms. One isotope has a mass of 34.9689 amu ( 75.77% abundance). The other isotope has a mass of 36.9659 amu. Calculate the average mass of the element and determine its identity.
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