Number of equivalent = mole × n-factor
= 0.8 × 2 = 1.6 = 2. Equivalents
So number of equivalents = 2.
calculate the number of equivalents. 0.8 mole of Mg2+ Express your answer using one significant figure.
Problem 9.16 Calculate the number of equivalents in each of the following: Part A 0.6 mole of Mg2+ Express your answer using one significant figure. ANSWER: Eq Part B 0.3 mole of H+ Express your answer using one significant figure. ANSWER: ha m Part C 5 moles of CI Express your answer as an integer. HI ANSWER: AI Eq Part D 2 moles of Fe3+ Express your answer as an integer. ANSWER: Eq
Estimate [OH?] value for wine. Express your answer using one significant figure.
Part A How many equivalents of Mg2+ are present in a solution that contains 2.70 moles of Mg2+ ? Express your answer using three significant figures. 10 A¢ A © 2 ? Na Eq Mg2+ Submit Request Answer
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An aqueous solution contains 31% HCl by mass. Calculate the molality of the solution. Express your answer using two significant figures. Calculate mole fraction of the solution. Express your answer using two significant figures.
Calculate [OH−] for each solution. Part A pH = 12.43 Express your answer using two significant figures. [OH−]=____M Part B pH = 1.30 Express your answer using two significant figures. [OH−]=____M Part C pH = 8.15 Express your answer using two significant figures. [OH−]=____M
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Calculate and express your answer to the correct number of significant figures (1.00866 - 1.00728)/6.02205 x 10^23
Find the number of seconds in a solar year. Express your answer using five significant figures.