Calculate the number of H+(aq) ions in 1.6 mL of pure water at 25 ∘C. Express your answer using two significant figures.

0.644 g of wood bleach, which contains oxalic acid, H2C2O4, was placed in an Erlenmeyer flask.  The wood bleach was titrated with 23.57 mL of 0.379 M KOH solution.  Determine the percent by mass of the H2C2O4 (a diprotic acid) in the sample of wood bleach. Enter your answer with the correct number of significant figures.  If you do not enter the correct number of significant figures, your answer may be graded as incorrect even if it is otherwise correct.

Titration of a 11.0 mLmL solution of HClHCl requires 32.4 mLmL of 0.11 MM NaOHNaOH. What is the molarity of the HClHCl solution? Express your answer using two significant figures.

10.00 mL of sulfuric acid (H2SO4) with an unknown concentration was placed into an Erlenmeyer flask.  16.06 mL of 0.2498 M NaOH was needed to reach the neutral point.  Calculate the molarity of sulfuric acid.  Do not type units into your answer.   H2SO4(aq) + 2NaOH(aq) ⟶⟶ 2H2O(l) + Na2SO4(aq)

Calculate the number of H+(aq) ions in 1.4 mL of pure water at 25 ° C. Express your answer using two significant figures.

Calculate the molarity of an acetic acid solution if 26.0 mL of an HC2H3O2 solution is titrated with 24.8 mL of a 0.169 M KOH solution: HC₂H3O2 (aq) + KOH(aq) → H₂O(1)+ KC₂H3O2 (aq) Express your answer with the appropriate units.

The following chemical reaction takes place in aqueous solution: AgNO3(aq)+NaBr(aq)AgBr(s)+NANO,(aq) Write the net ionic equation for this reaction. 日

Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. The following molecular equation represents the reaction that occurs when aqueous solutions of silver(1) nitrate and sodium iodide are combined. AgNO3(aq) + Nal (aq) →→→Agl (s) + NaNO3(aq) Write the balanced net ionic equation for the reaction. + + + +

Acetic acid (HC₂H₂O₂) is an important ingredient of vinegar. A sample of 50.0 mL of a commercial vinegar is titrated against a 1.00 M NaOH solution. What is the concentration (in M) of acetic acid present in the vinegar if 5.75 mL of the base is needed for the titration? Be sure your answer has the correct number of significant digits. M X

The hydronium ion concentration in a sample of springwater is found to be 5.2 ✕ 10−5 M at 15°C. What is the concentration (in M) of hydroxide ions in the springwater? (Kw = 4.57 ✕ 10−15 at this temperature.)