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- 6-82 (Chemical Connections 6C) A solution contains 54 mEq/L ofCI- and 12 mEq/L of HCO3-. If Na+ is the only cation present in the solution, what is the Na+ concentration in milliequivalents per liter?6-99 A concentrated nitric acid solution contains 35% HNO3. How would we prepare 300. mL of 4.5% solution?6-83 (Chemical Connections 6C) The concentration of Ca2+ ion present in a blood sample is found to be 4.6 mEq/L. How many milligrams of Ca2+ ion are present in 250.0 mL, of the blood?
- 6-55 According to the label on a piece of cheese, one serving of 28 g provides the following daily values: 2% of Fe, 6% of Ca, and 6% of vitamin A. The recommended daily allowance (RDA) of each of these nutrients are as follows: 15 mg Fe, 1200 mg Ca, and 0.800 mg vitamin A. Calculate the concentrations of each of these nutrients in the cheese in ppm.what is the molaity of a 0.350 L solution mole by albing a4.9 a Nagoa to suffecint wote? b.) 0.350M W SLIC (0 w cC'I (*pWhat N (normality) is made by diluting 50 ml of H2SO4 (den. = 1.08; 11.6% by weight to 1.0 liter water? How many ml. of 0.2000 N HCI and how many of 0.2000 N H2SO4 can be neutralized by 20.0 ml of 0.1500 N Na OH?
- What concentration of potassium chloride (in ppm) is present in 7.1 × 10-5 mol L-1 KCl(aq), if the solution's density is 1.0 g mL-1?I have 100 mL of 5M HNO3. What will the concentration be when I dilute it to 1 L ?4.5 gm of oxalic auid/ foOH ) COUH presentin soomlor foletion. Therm Normalilay is ( Hint: COOH → C0 A) 0.1 B) 0-L C) 0.3 D) O. g
- 50 ml of .2M KNO3 from 4.0 M stock solutionI850 أسئلة امتحان الكيمياء العملي If you want to prepare a Sodium Hydroxide solution (40g/mole) (0.3M) in (250 mL) volumetric flask, * you will take. from (NaOH) 0.5g 3g 5g 3mg O7:37 PM Fri Feb 26 + AE ... I U which depends on the number of solute particles. So, if the same solute is added then elevation in boiling point depends on the concentration. Higher the concentration, the higher the boiling boint. 2. Which solution below would have the lowest freezing point below? a) 0.75 M NaCI (aq) b) 0.15 M NaCI (aq) c) 1.00 M NaCI (aq) Explanation: 3. Which solution below would you expect to have the highest boiling point? a) 0.5 mol of CaCl, in a 200 mL aqueous solution p) 0.5 mol of KCI in a 200 mL aqueous solution =) 0.5 mol of AlICI3 in a 200 mL aqueous solution Explanation: