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Problem- Calculate the pH after addition of 20mL of 0.150 M NaOH to 40mL of the 0.150 M acetic acid. (Calculate the moles of acid and the NaOH from the molarity and volume. Subtract moles of base from moles of acid. Get the acid molarity. Work the weak acid problem as before.) Demonstrate all work. Utilize an ice table.
For a chemical reaction to be non-spontaneous at any temperature, which of the following conditions must be met
Determine the empirical formula of a compound with the following composition by mass: 48% carbon 4% hydrogen 48% oxygen
is it possible to use methylene blue to determine the concentration of ascorbic acid in orange
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
During an extraction a student loses track of which layer is the organic layer. How could she determine which layer is the aqueous phase?
Many household bleaching solutions are essentially solutions of sodium hypochlorite, NaOCl. Calculate the sample weight of liquid bleach containg 5.0% by weight of NaOCl that would oxidize enough I^- to consume 0.80 mL of 0.15 M sodium thiosulfate..
It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.
[NO2] = 0.65 M, [NO] = 7.2 × 10-8 M, and [N2O] = 0.048 M. What is the value of Kp for this reaction? Enter your answer in scientific notation.
What mass of P4 is required to react with excess oxygen and produce 16.42 g of H3PO4, if the percent yield is 75.45%? P4 + 5 O2 + 6 H2O ® 4 H3PO4
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? (Ksp for Mg(OH)2= 8.9 x 10 -12.)
a piece of sodium metal reacts completely with water as follows.2 nas 2 h2ol 2 naohaq h2gthe hydrogen gas generated
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
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