Approach: 1) Determine mass of HCl in V mL solution
2) Determine moles of HCl in V mL solution
3) Determine moles of HCl in final dilute solution and calculate V
Question 1 5 points Save Answer What volume (in mL) of a 369% (w/w) HCI solution...
VOIon 6 of 14 1 points Save Answer If 207 ml, of a solution of HCI are diluted to 698 ml. of 0.100 M HCI, what is the molarity of the original HCI solution? Enter only the numeric value for your answer (no units)
1 points Save Answer What is the percent concentration by mass volume of 102.3 ml. of a solution that contains 53.9 g of barium fluoride? Enter only the numeric value for your answer (no units or symbols).
1 points Save Answer What is the percent concentration by mass/volume of 224.2 ml. of a solution that contains 945 g of barium fluoride? Enter only the numeric value for your answer (no units or symbols)
Question 15 10 points Save Answer In a titration, a sample of HCl required 18.4 mL of a 0.7971 M NaOH solution to reach the endpoint. Calculate moles of NaOH dispensed. (M=mol/L; mol=MxV) HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq) Answer to 4 sig figs. Do not include unit, mol.
Question 17 5 points Save Arywer What is the molarity of a solution that is 26.0% by mass phosphoric acid (H3PO4)? The molar mass of H3PO4 i 98.0 g/mol and the density of the solution is 1.155 g/ml a. 3.06 M b. 2.30 M 4.2.30 10M d. 3.00 x 102M e. 0.30 M Which one of the following is a buffer solution? a. HCN and KCN b. HNO3 and NaNO3 O C. HC2H302 and KOH d. HCIO4 and NaClO3 e....
27) What is the concentration (molarity) of HCI in the final solution when 65 mL of a 9.0 M HCl solution is diluted with pure water to a total volume of 0.15 L? 28) How many milliliters of a 9.0 M H2SO4 solution are needed to make 0. 45 L of a 3.5 M solution? A) 0. 18 mL B) 1.2 mL C) 180 mL D) 1200 mL 29) A student prepared a stock solution by dissolving 15.0 g of...
i need help with 1-6 Carlos Chapter 9 Practice Problems t. A solution is made by dissolving 50.0 grams of HCI in enough water to give 2500 ml. of selutien. a) What is the molarity of the solution? b) what is the % concentration (w/v) of the solution? 2. How many grams of a protein are there in 275 mL of a 0.00%(wmor a protein soluton? 3. How many grams of NaoH are there in 855 mL of a 350...
What is the molarity of a solution that contains 10.0 grams of NaOH in 1 L of solution? How many grams of HCl are needed to make 500.0 mL of a 1.00 M solution (GMW HCl = 36.46 g)? A 2 N HCl solution is also a ___ molar solution Given a 1.5 M H2SO4 solution, what is the normality of this solution? What is the gram equivalent weight of K2CO3 (K = 39.10 g, C = 12.01 g, O...
help!!! how do I answer this Page 1 of 6 a. (3 Points) If 145 grams of lead nitrate were added to water to make 1.50 x 10 mL of solution, what would be the molarity of the resulting solution Pb(NO) molar mass w 331.21 gmol b. (3 Points) What is the molar concentration of chloride sons in a solution prepared by mixing 50.0 mL of 1.5 M KCI with 100.0 mL of a 2.5 M Cacla solution? took 100%...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...