Translation: We add 100 ml of 0.01 M $\ce{Na2SO4}$-solution to 100 ml of 0.02 M $\ce{CaCl2}$-solution. It is an unusually biocompatible material and is completely resorbed following implantation. KOH(aq) + Fe(NO3)3(aq)  9. CaCl2(s) Ca2+(aq) + 2 Cl-(aq) ÄH = -81.5 kJ A 10.4-g sample of CaCl2 is dissolved in 102 g of water, with both substances at 25.0°C. Anhydrite. How to find the concentration of barium ions in a mixture of barium sulfate and barium thiosulfate? Predicting Exchange Reactions. )the moles Na3PO4 required to react with 2.03 L of 0.891 M Ca(NO3)2 B. CaCl2(s) Ca2+(aq) + 2 Cl-(aq) ΔH = -81.5 kJ A 13.0 g sample of CaCl2 is dissolved in 134 g of water, with both substances at 25.0°C. Given 650g of CaCl2 added to 1.0L and allowed to dissolve as much as possible. (Presume drops are the same size, one drop = 0.05mL)((Presume volumes are additive)) So far I've figured .15g Na3PO4/163.94g/mol Na3PO4 =, which of thh following reactants would you add to an aqueous solution of ammonium sulfate in order to precipitate quantitatively all the sulfate? Does it have 4 sigfigs, or am I, A solution contains 153g Na3PO4 and 415g H2O. This is because the Ag+ forms an insoluble compound with the Cl- from the NaCl...AgCl. A square wall is covered with square tiles. When did organ music become associated with baseball? National Institute for Occupational Safety and Health, "A refinement of the crystal structure of gypsum CaSO, "Compound Summary for CID 24497 - Calcium Sulfate", "Effect of Calcium Carbonate and Calcium Sulphate on Bone Development", "NASA Mars Opportunity rover finds mineral vein deposited by water", https://en.wikipedia.org/w/index.php?title=Calcium_sulfate&oldid=984007841, Chemical articles with multiple compound IDs, Chemical articles with multiple CAS registry numbers, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License. Franklin Fiber H 45. How to calculate the amount of sodium sulfate needed to lower the silver ion concentration of a saturated silver sulfate solution? You might learn more chemistry if the question had been "What volume 10 mM $\ce{Na2SO4}$would it take to dissolve 2 mmol $\ce{CaSO4}$? I struggle already with these two but the first…, A ball of mass 100g and another ball of 120g moves towards each other with speeds 6 m/s and 5 m/s respectively . We know that for the product of the final concentrations, $\ce{[Ca^{2+}]}_f$ and $\ce{[SO4^{2-}]}_f$, is equal to the $K_\mathrm{sp}$. The canoe is on a river that is flowing 0.50m/s east. What does "born on their backs with their hands in their pockets mean" in Great Expectations? Please help me I have no clue where to start. Calculate the final temperature of the solution assuming no heat lost to the, In a moist room (44m3) 4 kg dry CaCl2 is placed. AgI (precipitate color) Yellow. Q. ), Calculate the volume of 1.86M Na3PO4 solution that can be prepared from 5.45 g of Na3PO4. Anhydrite. ‘ and find homework help for other Science questions at Homework Help. Justify the title of the poem "The Rain" by Walt Whitman. Calcium sulfate (1:1) Calcium sulfate (CaSO4) Pigment white 25. 1. I have no idea how to go about this question, please help! Also given: CaCl2(s)+6H2O(l)->CaCl2* 6H2O(s) delta H = -97.0 kj what is the heat of solution of anhydrous CaCl2 in a large volume of water? The amount of $\ce{SO4^{2-}}$ is $(0.1+V_e)\times0.01$ moles. This, A scientist wants to make a solution of tribasic sodium phosphate,Na3PO4 , for a laboratory experiment. Up to the 1970s, commercial quantities of sulfuric acid were produced in Whitehaven (Cumbria, UK) from anhydrous calcium sulfate. It has many uses in industry. if 30ml of .150 M CaCl2 is added to 22.5ml of .1 M AgNO3, what is the mass of the AgCl precipitate? Calcium sulfate (1:1) Calcium sulfate (CaSO4) Pigment white 25. Find the derivative of the function, ` y=sin 4x cos 5x`. Who is the protagonist and the antagonist in "The Bet"? CaCl2(s) -> Ca(aq) + 2Cl(aq) ΔH_rxn = +198.0 KJ "If that g sample of calcium chloride was dissolved in 1000.0g of water, with both substances originally at 25.0C, what would be the final temperature of the solution be? Join Yahoo Answers and get 100 points today. $\pu{0,43 l}$ On heating above 250 °C, the completely anhydrous form called β-anhydrite or "natural" anhydrite is formed. What colour would this precipitate be? calcium nitrate, Ca(NO3)2, and sodium chloride , NaCl why does the answer come out as no reaction? The problem then lists the solubility constant, $K_\mathrm{s}$, for $\ce{CaSO4}$ as $2.5\cdot 10^{-5}$. Floor color matching the ceiling B. thank you!! calculate the mass percent of the following solutions 1.25 g CaCL2 in 35.0 g H2O I am not sure if i have the correct set up (1.25g CaCl2/1.25 g CaCl2 + 35.0 g H20)*100, CaCl2(aq)+Na3PO4(aq) -----------> Ca3(PO4)2(s) +NaCl(aq)4) If the “H” for this reaction is -45.5 kJ/mol, is the reaction endo- or exothermic?