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Need help with these please 4. With what volume of 5.00 MHF will 4.72 g of...

Question:

need help with these please
4. With what volume of 5.00 MHF will 4.72 g of calcium hydroxide react comp the following reaction? 2HF + Ca(OH), CaF, +2H,0
4. With what volume of 5.00 MHF will 4.72 g of calcium hydroxide react comp the following reaction? 2HF + Ca(OH), CaF, +2H,0 a hydroxide react completely, according to Ca(OH)2= 20+(16+1)x] =54g 5. How many moles of sulfate ions are there in a 0.545-L solution of 0.489 M Al2(SO4)3? What volume of 2.52 M HCl is required to prepare 176.5 mL of 0.449 MHCI?

Answers

4) Equation: Ca(OH), (aq) + 2HF(aq) — Caf, (aq) + 2H,0(1) 1 mol Ca(OH) No of moles of Ca (OH), = 4.72 g 24.093 = 0.0637 mol C

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