Prelab 1 -BIO3126

What is the molarity of an aqueous solution that contains 0.0720 g C2H6O2 per gram of solution . The density of the solution is 1.04 g/mL X STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 1.04 62.08 6.022 x 1023 0.0720 1.21 x 10-3 4650 1.12 1000 1.21 1 0.001 g C2H.O2 mol C2H6O2 g C2H&Oz/mol g solution/mL mL solution g C2H6O2/g solution M C2H6O2 L solution g solution

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Question 7 of 10 Submit What volume in L of a 0.724M Nal solution contains 0.405 | mol of Nal ? X STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %3D 0.405 0.293 g Nal L 126.90 g Nal/mol 0.559 mol Nal 559 mL 22.99 M Nal 148.89 6.022 x 1023 1.79 0.724 Tap here or pull up for additional resources

What is the molality of lithium ions in an aqueous solution made up of 0.302 m Lİ:PO4 assuming the compound dissociates completely? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %3D G 4 115.79 0.001 0.302 35.0 1 6.022 x 1023 0.906 1000 1.21 0.101 g Li:PO4 mol LisPO4 m Li:PO4 g Lit m Lit kg solvent g solvent mol Lit

STARTING AMOUNT X What is the molality of lithium ions in an aqueous solution made up of 0.302 m LisPO4 assuming the compound dissociates completely? ADD FACTOR x( ) 0.302 115.79 0.101 DELETE t 35.0 1000 kg solvent m Li³PO4 mol Li³PO4 6.022 x 10²3 1.21 mol Lit g Lit = ANSWER 3 0.906 4 0.001 g solvent g Li3PO4 RESET 3 1 m Lit

STARTING AMOUNT X = Glycerol (C3H8O3) is a byproduct of soapmaking. What is the molality of a solution made by dissolving 155 g C3H8O3 per L water ? The density of water is 1 kg water/L ADD FACTOR x( ) 1680 6.022 x 1023 16.8 1 DELETE t 1.68 1000 0.594 ANSWER 15.5 594 59.4 g C3H₂O3/mol m C3HO3 mL water g C3H8O/L water g C3HsO3 mol C3H₂O₂ kg water/L 0.001 RESET 3 92.09 kg water 155 L water

on 7 of 10 > Macmillan Learning What NaCl concentration results when 299 mL of a 0.780 M NaCl solution is mixed with 587 mL of a 0.370 M NaCl solution? concentration: 80 F3 000 000 F4 % F5 < F6 & Aa F7 * DII F8 ( DD F9 ) J F10 () F11 + F12 M

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What is the molarity of an aqueous solution that contains 0.072 g C2H&O2 per gram of solution. The density of the solution is 1.04 g/mL STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 62.08 1.04 0.072 1 1.21 x 10-3 0.001 1000 1.12 6.022 x 1023 4650 1.21 g solution/mL M C2H&O2 g solution mL solution mol C2H6O2 g C2H.Oz/mol g C2H&O2 L solution g C2H&Oz/g solution

What willl be the Molar concertration of the 473.49  HCl solution prepared from 4 mL of concentrated HCl (MW=36.46) ? The density of concentrated HCl is 1.18 g/mL.  answer in 2 decimal places no need to write the unit

Problem Set » Unit 4 Q2 (2 parts) A solution of sodium thiosulfate, Na2S2O3, is 0.4203 M. 8.52 mL of this solution reacts with 26.21 mL of I₂ solution. What is the molarity of the 12 solution? 2(Na₂S₂03) + 12+Na2S406 + 2(Nal) Submit Answer Tries 0/99 29.07 mL of the 12 solution from above is required to titrate a sample containing As2O3. Calculate the mass of As2O3 (197.8 g/mol) in the sample. CAL 8:00- MThis discussion is closed. 0:50- As2O3 + 5(H₂O) + 212 → 2(H3ASO4) + 4HI Submit Answer Tries 0/99 CI 12:00 39² F1 21 淋 F2 80 F3 Q F4 tv ← DII Timer D Notes Evaluate

3 3 3 You prepared an exact saturated solution of K₂Cr₂O7 at 70°C in 1 kg of water. You cool the water to 40°C. How much K₂Cr₂O7 17. stayed dissolved in the 1 kg of water? 18 19 20 You prepared an exact saturated solution of K₂Cr₂O7 at 70°C in 1 kg of water. You cool the water to 40°C. How much K₂Cr₂O7 flocked out of solution as a solid? How much K₂Cr₂O7 must be dissolved into 1 kg of water at 90°C to make an exact saturated solution? You prepared an exact saturated solution of K₂Cr₂O7 at 90°C in 1 kg of water. You cool the water to 50°C. How much K₂Cr₂O7 stayed dissolved in the 1 kg of water? You prepared an exact saturated solution of K₂Cr₂O, at 90°C in 1 kg of water. You cool the water to 50°C. How much K₂Cr₂O7 flocked out of solution as a solid?

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Select all that are True. At 10 degC is 20 g of sodium nitrate is placed into 100 g of water, an saturated solution is formed Cerium(III) sulfate is an example of an exothermic solute as it dissolves. Potassium dichromate is an example of a solid that is exothermic as it dissolves. At 30 degC, 90 g of potassium nitrate can dissolve in 200 g of water. If 50 g of potassium chloride is placed into 100 g of water at 60 degC, a saturated solution will form. At 60 degC both KCl and NaCl have the same solubility.

Run 1 Run 2 Molarity of KMnO4 solution (M) from bottle 0.00101 0.00101 Initial reading of buret KMnO4 (mL) 0.62 11.35 Final reading of buret KMnO4 (mL) 11.33 21.70     Run 1 Run 2 Volume of KMnO4 solution (mL)     Moles of MnO4- used for titration (mol)     Moles of C2O42- in 100.0 mL of solution (mol)     Molarity of C2O42- (M)     Molarity of Cd2+ (M)     Ksp of CdC2O4     Average Ksp of CdC2O4     Calculations: Moles of MnO4- used for titration of saturated solution CdC2O4 Moles of C2O42- in 100.0 mL of saturated solution of CdC2O4 Molarity of C2O42- in saturated solution of CdC2O4 Molarity of Cd2+ in saturated solution of CdC2O4 Solubility product, Ksp, of CdC2O4

The answer must be correct significant di

About how much NaNO3 will precipate out of solution when a saturated solution containing 140 g is cooled from 75 degrees to 30 degrees? Question 2 options:   95 g   40 g   45 g   0 g

Need help finding the concentrations for each solution

Caffeine, Cs H10 N4O2 , is a stimulant found in tea and coffee. A sample of the substance was dissolved in 45.0 g of chloroform, CHCl3, -2 to give a 7.82 × 10-² m solution. How many grams of caffeine were in the sample? Submit Answer g Try Another Version 10 item attempts remaining

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The solubility of a gas is 0.650 g/L at a pressure of 109 kPa. What is the solubility of the gas if the pressure is increased to 131 kPa?

Please answer very soon will give rating surely Complete Answer needed

Question 6 of 7 Submit The Ksp of Cu(OH), is 2.2x 10-2º. What is the solubility of this salt in moles of Cu(OH), per liter of water (molarity)? 1 2 3 4 6. C 7 8 +/- х 100 Tap here or pull up for additional resources LO

Question 5 of 7 Submit The Ksp of Fe(OH)2 is 1.8x 10-15. What is the solubility of this salt in moles of Fe(OH)2 per liter of water (molarity)? 1 2 3 4 6. C 7 8 +/- х 100 Tap here or pull up for additional resources LO

V,M, = V,M, %3D 2 A student prepared a 0.12 M solution of NaOH with a volume of 66 mL. What was the original concentration if the original volume was 595 mL? Report your answer with 3 decimal places. Next « Previous op & 8 4. 5 %24

sq An aqueous solution of a nonionic (that is, nonelectrolyte) solute has a freezing point of -0.293 °C. The solution contains 1.94 g solute dissolved in 78.9 g H₂O. What is the molar mass of the solute? Submit Submit Answer g/mol Show Approach Show Tutor Steps Retry Entire Group 9 more group attempts remaining Cengage Learning Cengage Technical Support Previous Next> Save and Exit

on 12 of 21 > Macmillan Learning 1 Q A solution contains 0.575 g Ca²+ in enough water to make a 1825 mL solution. What is the milliequivalents of Ca²+ per liter (mEq/L) for this solution? concentration: 2 3 E 80 $ 4 R 888 F4 % 5 T 6 V MacBook Air & 7 ad F7 * 00 8 DII FB ( 9 DD FO ) O F10 F11 + = mEq/L F12 delete

Need all 1,2,3

What is the molarity (M) of a solution containing 72.3 grams of potassium nitrate (MM = 101.11 g/mol) in a total volume of 750.0 mL? Group of answer choices 0.953 M 9.53 x 10E(-3) 9.53 x 10E(-4) 9.53 x 10E(-2)