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A quality-control technician is testing the concentration of muriatic acid (hydrochloric acid) to check that the concentration is within certain limits. Calculate the concentration of the hydrochloric acid if a 15.0-mL sample is titrated with standard sodium carbonate solution. The titration required 10.00 mL of 0.350 mol/L sodium carbonate to neutralize the acid.
Upon further analysis, the compound is found to be 25.305% C and 74.695% Cl. What is the molecular formula of the compound?
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
Problem- The explosive nitroglycerin (C3H5N3O9) decomposes rapidly upon ignition or sudden impact according to the following balanced equation: Calculate the standard enthalpy of formation (?H?f) for nitroglycerin
Point out whether the ff elements exist as atomic species, molecular species, or extensive three dimensional structures in their most stable states at room temperature as well as write the molecular or empirical formula for each one
If common sugars are heated too strongly, they char as they decompose into carbon and water vapor. For example, if sucrose (table sugar) is heated, the reaction is
Selenic acid is a strong diprotic acid and dissociates according to the following equations: H2SeO4(aq) H+(aq) + HSeO4-(aq) Ka1 = Large
why is the internal-standard method often used in plasma emission
An acetate acetic acid buffer has a pH = 5.00, containing 0.100 M NaOAc. Calculate the pH of the solution after adding 10 mL of 0.10 M NaOH to 100 mL of this buffer.
question 1 when 2.50 g of copper cu reacts with oxygen the copper oxide product has a mass of 2.81g what is the
an aqueous solution of copperii sulfate and an aqueous and an aqueous solution of sodium phosphate are mix together in
50 ml solution of hno2 is titrated with 0.1 m koh. it requires 26.4ml koh to reach the equivalence point of the
Determine delta H of this reaction (kJ/mol H 2 SO 4 ) - When 24.4 mL of 0.500M sulphuric acid ,H 2 SO 4 is combined to 24.4ml of 1.00M potassium hydroxide KOH in a coffee cup calorimeter
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