For the following problem, use s separate sheet of paper to…

For the following problem, use s separate sheet of paper to solve the problem. Select your answer from the choices given and then upload your solution at the following link: https://canvas.dccc.edu/courses/28465/assignments/575260 Your work must be shown for full credit. The answer alone is only worth 1 point.   What mass of sodium nitrite (NaNO2) must be added to 350. mL of water to give a solution with pH = 8.40?            Ka(HNO2) = 5.6  x 10–4       

Using the following table of accepted values for the specifi…

Using the following table of accepted values for the specific heat of metals, identify the unknown metal in the above calorimetry experiment. Calculate the percent error between your experimental value and the accepted value. Partial credit may be granted where all applicable work is shown.    Your final answer should include: 1) Metal Identification 2) Percent error

For the following problem, use s separate sheet of paper to…

For the following problem, use s separate sheet of paper to solve the problem. Select your answer from the choices given and then upload your solution at the following link: https://canvas.dccc.edu/courses/28465/assignments/575260 Your work must be shown for full credit. The answer alone is only worth 1 point.  Write the complete ionization equation for the ion from sodium benzoate (NaC7H5O2) that hydrolyzes in water. Include your equation as part of your free response answer. What is the pH of a 0.0100 M sodium benzoate solution?            Ka (C7H5O2H) = 6.67 x 10-5

For the following problem, use s separate sheet of paper to…

For the following problem, use s separate sheet of paper to solve the problem. Select your answer from the choices given and then upload your solution at the following link: https://canvas.dccc.edu/courses/28465/assignments/575260 Your work must be shown for full credit. The answer alone is only worth 1 point.   What mass of potassium hypochlorite (KClO) must be added to 450. mL of water to give a solution with pH = 10.20?              Ka(HClO) = 4.0 x 10–8