Question

284 cl is the ne 19 14 kg w mass Calcul gos What sodiu What satur X gwa Useful for How many grams of AICI, 6H1:0 do you need to prepare 300 cm with mass concentration of 0.123 g/cm aluminum chloride solution? (66.79) How many grams of Ba(OH)2 8H30 do you add to water to prepare 1000 cm' of mol/dm barium hydroxide solution? (315.48) How many grams of FeSO -7H0 do you need to prepare 800 g of 0.175 mass fraction iron(II) sulfate solution? (256.22) 4. How many grams of SnCl, 2H,O are required to prepare 500 cm of 230 g/dm mass concentration tin(II) chloride solution? (136.86) 5. How many g of Na PO, 12H20 do you need to prepare 400 g, 0.13 mass fraction trisodium phospate solution? (120.57) 6. How many cm of 170 g/dm'mass concentration iron(III) sulfate solution do you dilute to 350 cm to get a 30 g/dm solution? ( 61.76) 7. How many cm' of 0.12 g/cm mass concentration manganese(II)-sulfate solution do you dilute to 400 cm' to get a 50 g/dm mass concentration solution? (166.67) 8. How many cm' of 250 g/dm mass concentration sodium carbonate solution has to be diluted to get a 250 cm 0.1 mol/dm sodium carbonate solution? (10.60) 9. 30 cm of 175 g/dm mass concentration sodium sulfite solution is diluted to 300 cm with distilled water. What is the new mass concentration in g/cm 2 (0.0105) 10. 140 g of 0.6 mass fraction of acetic acid solution is diluted in a flask to 1 dm with distilled water. What is the new mass concentration in g/dm? (84) 11. 170 g of 0.11 mass fraction iron(II) chloride solution is diluted to 600 cm'. What is the new concentration in mol/dm'? (0.246) 12. What is the concentration of 2 mol/dmsulfuric acid expressed in mass fraction? The density of sulfuric acid is 1.12 g/cm'. (0.175) What is the density (g/cm') of a nitric acid solution whose mass fraction is 0.5256 and mass concentration is 0.6965 g/cm ? (1.325) (14.) How many cm' of 0.35 mass fraction phosphoric acid must be diluted to 250 cm to get a 50 g/dm solution? The density of the original solution is 1.216 g/cm. (29.37) How many g of hydrochloric acid is contained in 1 dm of solution if the solution has a mass fraction of 0.2136 and a density of 1.102 g/cm? (235.39) 16. What will be the mass concentration (g/dm?) of a solution prepared from 250 cm 17 g/dm' and 150 cm'8 g/dm of potassium chloride solution? (13.63)

Answer 1

Saath giren → Aldy. 6H₂O Volume = 300 cm's, mais cone = 0.123 An = 0.123 g/cm3 :. mars = volume x mas cone. mars = 300 cm3 x 01239 x = 36.9 gram mais needed = 36.9 gram ..