QUESTION 9 How many grams of solute are needed to make 1300 mL of a 4.5% (m/v) NH4Cl solution? Do not include units in your answer. QUESTION 10 A mouthwash contains 24.0% alcohol by volume (%v/v). If a bottle of mouthwash contains 335 mL, what is the volume in milliliters of the alcohol? Do not include units in your answer. QUESTION 11 Calculate the following. Include the letter for each answer and watch sig figs A. If the pH of a soltuion is 3.50, what is the [OH]? B. if the pH of a solution is 8.50, what is the [H3O+] Click Save and Submit to save and submit. Click Save All Answers to save all answers. 74 25 M 9 7 Save All Answ

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