c) ll d) IV e) v 7. a soft drink, the label might read 5.1l x 10 M Na. What woul

Question

c) ll d) IV e) v 7. a soft drink, the label might read 5.1l x 10 M Na. What would this translate into in grams Na' per a 12.0 oz can (355 mL)? a) 41.7 g b) 0,0417g c) 0.00182 g d) 1.41 g e 0.0613 g 8. The EPA has set the maximum evel of As in drinking water as 1.3 x 10" M. What is the As level in ppm? a) 1.3 x 10-10 ppm b) 1.7x 10 ppm c) 9.7 x 10 ppm d) 1.7x 1012 ppm e) 9.7 x 10 ppm 9. What is the concentratio e molar concentration of Na' in a solution prepared by dissolving 100.0g of Na PO, in sufficient H:O to form 2.00 L of solution? a) 0.305 M b) 0.0101 M c) 0.915 M d) 3.86 M e) 1.22 M w many moles of sodium phosphite are required to prepare 23.6 ml. of 0.0574 M Na PO,? a) 5.74 x 10 moles NasPO b) c) d) e) 1.35×10] moles NaPO 8.49% 100 moles NaPO, 2.00×10-1 moles NaP0; 9.16 × 10-3 moles NaPO, What is the concentration of potassium nitrate in a solution prepared by dissolving 8.14e-3 moles of KNO, in 85.0 mL of water? I1. a) 9.58 × 10-5 M KNO3 b) 9.68 M KNO c) 9.58 × 10 2MKNOj d) 6.92 x 10 M KNO e) 9.68x 10 MKNO What is the concentration of chloride ions in 59.6 ml of 0.716 M SrCI? a) 0.716 MC b) 0.358 MCI c) 0.477 MCI d) 1.43 M CI e) 85.3 MC 12. What is the concentration of Na2SO4 in a solution that is 0.469 M in Na"? a) 0.704 M Na S04 13. b) 0.469 M Na SO c) 0.938 M Na SO d) 0.313 M Na SO.4 e) 0.235 M Na SO 14. How many moles of cesium fluoride are required to prepare 89.6 mL. of 0.666 M CsF? a) 0.0597 moles CsF

Explanation / Answer

Ans 7 : b) 0.0417 g

Molarity = no. of moles of Na+ / volume of solution in L

5.11 x 10-3 = n / 0.355

n = 0.00181405 moles

Mass of Na+ = 0.00181405 x 22.99

= 0.0417 g

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.