Question 8 of 10 Submit What is the concentration of a solution made with 0.450 moles...
Question 2 of 10 Submit What is the pH of a 9.3 x 10-6 M KOH solution? 1 2 3 +/- 0 x100 x 100 Tap here or pull up for additional resources
Question 25 of 37 Submit The concentration of the hydronium ion in an aqueous solution at 25°C is 0.0054 M. What is the concentration of the hydroxide ion? M 1 3 x N 4 5 6 с 7 8 9 +/- 0 x 100 Tap here or pull up for additional resources
< Question 10 of 10 Submit How many moles of HCl are there in 75.0 mL of 0.485 M HCI? mol 1 4 2 5 3 6 + x 100 Tap here or pull up for additional resources
< Question 7 of 10 Submit How many moles of CH3OH are there in 57.7 mL of 0.400 M CH3OH? mol 1 4 2 5 3 6 + x 100 Tap here or pull up for additional resources
Question 4 of 10 Submit What is the pH of a 0.0560 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 8 of 10 Submit For the reaction below, Kc = 1.10 x 10-4. What is the equilibrium concentration of C if the reaction begins with 0.200 MA and 0.750 MB? 2 A (aq) + B (aq) = C (aq) 123 +/- 0 x 100 Tap here or pull up for additional resources
Question 39 of 42 Submit A particular vitamin's chemical formula has one cobalt atom. What is the molar mass of the vitamin if it contains 4.34% cobalt? g/mol 3 X 7 8 9 +/- x 100 Tap here or pull up for additional resources Question 40 of 42 Submit What is the mass percent of water in zinc(II) nitrate hexahydrate? % 2 X 8 9 +/- x 100 Tap here or pull up for additional resources Question 41 of 42...
Question 19 of 20 Submit What is the concentration of sodium ions in 0.300 M Na2CO3? L23 4 5 6 + x 100 Tap here or pull up for additional resources
Question 3 of 5 Submit Determine the mass, in grams, of 0.495 moles of Pb (1 mol of Pb has a mass of 207.2 g). 128.464 g | 1 2 3 X 7 +/- x 100 Tap here or pull up for additional resources
help! i got it wrong Question 14 of 62 Submit What is the pH of a 0.0380 M solution of HONH3CI (Kb of HONH2 is 1.1 x 10-8)? 3.6 1 2 3 7 +/- 8 : 9 0 +/- x 100 Tap here or pull up for additional resources