10624892_10204953247776866_7648445192694796651_n.jpg - 22 How many total atoms are there in one formula unit of NH Al(SO4)2 24 HO WHY Al SO4 21 24 H20 5

# 10624892_10204953247776866_7648445192694796651_n.jpg - 22...

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This preview shows page 1 out of 1 page. Unformatted text preview: 22. How many total atoms are there in one formula unit of NH, Al(SO4)2 . 24 HO? WHY Al( SO4) 21 - 24 H20 5 10 48 24 38 atoms 72 23. What is the molar concentration (M) of 2.15 grams of K2SO, in 19.3 mL of solution ? K= 78.2 M mole S: 32 L 19. 3 ml = L? 0.193L 10=64 2.15g =:012 moles 0.12 moles =. 622 M 174. 2 10193 24. A 72.0 ml. sample of 1.58 M HNO, was diluted to a volume of 525.0 mL. Calculate the molarity of the resulting solution. NC UC = MB UB (1.58 M . 72 mc) 113.76 MC : 1:58 M 515 VC = 72 ml 515 ML MB = ? = .22 M UB = 525 ml 25. Calculate the molarity of an H2SO4 solution if 33.25 mL of the aqueous H2SO, solution required 68.0 mL of a 0.235 M NaOH (aq) to neutralize it completely. Libml H2SOA (aq) + 2 NaOH (aq) Na,SO4 (20) + 2 H20 (1) COB( MA. VA) = COA ( MB UB) 2 ( x . 03325 ) = 1(. 235 .. 0608 ) 04 405x = 01598 M = . 24 O...
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