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Q: Beaker 1 2 3 4 5 .15 M Na₂S₂O, mL 50.0 40.0 30.0 20.0 10.0 H₂O mL 0.0 10.0 20.0 30.0 40.0 [Na₂S₂O,…
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![on of Sodium Thiosulfate and Hydrochloric Acid
Beaker
1
2
3
4
5
5:02/7:01
.15 M
Na₂S₂O, mL
50.0
40.0
30.0
20.0
10.0
te of Na₂3₂
H₂0 mL
0.0
10.0
20.0
30.0
40.0
Scroll for details
[Na₂S₂0₂]
moles/L
.15
.12
.090
.060
.030
Opmer
Time,
seconds
22.5
1/time s
.0444
27.3
.0366
35.1
-0285
60.0 -0167
159.1
.00629
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- Part A) A 10.0 mL sample of 0.250 mol/L NiF2(aq) is mixed with 20.0 mL of 0.0900 mol/L NaOH(aq) and then diluted to a final volume of 100. mL.Calculate the concentration of Ni2+ ions in the 100 mL mixture before the reaction starts. Express your answer to three significant figures.ksp: 5.48e-164. Predict the effect of temperature decrease, (b) pressure increase, (c) concentration increase of O2 on the concentration of all species. Answer using "more" or "less". 2 SO3(9) O2(9) + 2 SO2(9) AH = - 47 Kcal a. b. С.Meeting is in progre Mg +HCI → US V I 4:21
- ted Solid manganese (II) sulfate is slowly added to 75.0 mL of a potassium carbonate solution until the concentration of manganese(II) ion is 0.0181 M. The maximum amount of carbonate remaining in solution is M. 80 Submit Answer $ 4 R V % 5 Use the References to access important values if needed for this question. Retry Entire Group 5 more group attempts remaining T G Cengage Learning | Cengage Technical Support ^ 6 B MacBook Pro Y H & 7 N U J ▶ 00 * 8 I M ( - O 9 1 K O Save and Exit ? 1The pOH of 0.23 M C6H5NH3* (Ka = 2.51 x 105) at 25°C is: (Given that: C6H5NH3* + H2O → C6H5NH2 + H3O*) O a. 9.35 O b. 2.60 О с. 8.53 O d. 11.4 е. 10.5II 5:44 PM Fri Oct 8 AA www-awn.aleks.com G periodic table -. Favorites - YouT... TV fuboTV - Watch... ALEKS - Caliyah... G kno3 acid or ba... G linear program... G write formulas f... C Solu O CHEMICAL REACTIONS Predicting precipitation Caliyah - Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column. Does a precipitate form when A and B empirical formula of solution A solution B precipitate are mixed? potassium hydroxide iron(III) nitrate O yes ou iron(II) nitrate sodium sulfide ou O sək O sodium acetate ammonium nitrate ou O sək O Check Explanation 22 COiaw Hill LLC. All Rights Reserved. Terms of Use I Privacy Center IA
- 7:37 PM Fri Feb 26 + AE ... I U which depends on the number of solute particles. So, if the same solute is added then elevation in boiling point depends on the concentration. Higher the concentration, the higher the boiling boint. 2. Which solution below would have the lowest freezing point below? a) 0.75 M NaCI (aq) b) 0.15 M NaCI (aq) c) 1.00 M NaCI (aq) Explanation: 3. Which solution below would you expect to have the highest boiling point? a) 0.5 mol of CaCl, in a 200 mL aqueous solution p) 0.5 mol of KCI in a 200 mL aqueous solution =) 0.5 mol of AlICI3 in a 200 mL aqueous solution Explanation:HC2H3O2 (aq) + NaOH (aq) ----> NaC2H3O2 (aq) + H2O(l) Trial Vi (mL) Vf (mL) 1 2.25 15.76 2 3 For their first trial, a student pipettes 5.00 mL of a vinegar solution into an Erlenmeyer flask. The student titrates the vinegar with standardized NaOH with a molarity of 0.317 M. The volume of titrant used was recorded in the table above. Calculate the molarity of the vinegar solution for this trial. Enter a number without units.__K2S(aq) + __H3PO4(aq) ® __K3PO4(aq) + __H2S(g) In a reaction mixture of 14.2 mL of 0.42 M K2S and 6.0 mL of 0.85 M H3PO4: 1. The theoretical yield of H2S from this reaction mixture, in mL at STP is _______ mLSTP 2. If 120 mL at STP of H2S was isolated, the percent reaction yield is ______
- Consider the reaction below. What is the effect on the concentration of acetic acid (CH3CO2H), water (H20) hydronium ion (H30*), and acetate ion (CH3CO2) if H3o is added to the reaction? CH3CO2H (aq) + H20 (1) = H30* (aq) + CH3CO2 (aq) Ka=1.8x10-5 The concentration of CH3CO2H The concentration of H30* The concentration of CH3CO2¯ The concentration of H2 increases decreases does not changeWhat volume (in L) of 1.30 M FeBr3 would be required to obtain 0.710 moles of Br ions? & 3 4. 6. 8. Q W E RThe solubility of CaF, in water at 25 °C is measured to be 0.017 . Use this information to calculate K, for CaF,. sp Round your answer to 2 significant digits.