Part A
42.0 mL of 0.150 M NaOH and 37.6 mL of 0.370 M NaOH
Enter your answers numerically separated by a comma.
Part B
44.0 mL of 0.100 M Na2SO4 and 25.0 mL of 0.170 M KCl
Enter your answers numerically separated by commas.
Part C
3.70 g KCl in 75.0 mL of 0.280 M CaCl2 solution. Assume that the volumes are additive.
Enter your answers numerically separated by commas.
A)
mixed molarity = (M1 V1 + M2V2 )/ V1+V2
= (0.150 x 42 + 0.370 x 37.6 ) / (42+37.6)
= 0.254 M
NaOH = 0.254M
[Na+ ]= 0.254M
[OH-]= 0.254M
Part B
[Na+] = 2 x 44 x 0.1 / 44 + 25
= 0.1275 M
{SO4-2] = 44 x 0.1 / 44 + 25 = 0.063 M
[K+] =25 x 0.17 / 44 + 25 = 0.062 M
[Cl-] = 25 x 0.17 / 44 + 25 = 0.062 M
Part C
KCl moles = 3.70 / 74.55 = 0.0493
KCl molarity = 0.0493 / 0.075 = 0.66M
[K+] = 0.66 M
[Ca+2] = 0.280 M
[Cl-] = 0.66 + 2 x 0.280 = 1.22 M
Indicate the concentration of each ion present in the solution formed by mixing the following. Part A: 42.0 mL of 0.170 M NaOH and 37.6 mL of 0.450 M NaOH. Assume that the volumes are additive. Enter your answers, separated by a comma, using three significant figures. MNa+ M N a + , MOH− = Part B: 44.0 mL of 0.100 M Na2SO4 and 25.0 mL of 0.160 M KCl. Assume that the volumes are additive. Enter your answers, separated...
Indicate the concentration of each ion present in the solution formed by mixing the following. A. 42.0 mL of 0.140 M NaOH and 37.6 mL of 0.400 M NaOH. Assume that the volumes are additive. B. 44.0 mL of 0.100 M Na2SO4 and 25.0 mL of 0.200 M KCl. Assume that the volumes are additive. C. 3.30 g KCl in 75.0 mL of 0.280 M CaCl2 solution. Assume that the volumes are additive.
Indicate the concentration of each ion present in the solution formed by mixing the following. A. 42.0 mL of 0.150 M NaOH and 37.6 mL of 0.410 M NaOH. Assume that the volumes are additive. B. 44.0 mL of 0.140 M Na2SO4 and 25.0 mL of 0.160 M KCl. Assume that the volumes are additive. C. 3.20 g KCl in 75.0 mL of 0.220 M CaCl2 solution. Assume that the volumes are additive.
Indicate the concentration of each ion present in the solution formed by mixing the following. Part A 44.0 mL of 0.110 M Na2SO4 and 25.0 mL of 0.200 M KCl. Assume that the volumes are additive. Enter your answers, separated by commas, using three significant figures. Part B 3.80 g KCl in 75.0 mL of 0.230 M CaCl2 solution. Assume that the volumes are additive. Enter your answers, separated by commas, using three significant figures.
Indicate the concentration of each ion present in the solution formed by mixing the following. 44.0 mL of 0.110 M Na2SO4 and 25.0 mL of 0.200 M KCl. Assume that the volumes are additive. Enter your answers, separated by commas, using three significant figures.
Part A 0.19 M NaOH Express your answer using two significant figures. Enter your answers numerically separated by commas. 30 AZ OO ? [OH-], H0+] - 5.3 • 10-14 Submit Previous Answers Request Answer Part B Express your answer to two decimal places. Enter your answers numerically separated by commas. © A ¢ O 2 ? pH. pOH = Submit Request Answer Part 2 Part C 1.4x10-3M Ca(OH), er using two significant figures. Enter your answers numerically shparated by commas....
Exercise 13.70 - Enhanced - with Feedback Complete the table: Complete the row for NaOH Enter your answers numerically separated by a comma. Moles of solute Molarity of solution Volume of solution 230 ml 125.0 mL Mass of Solute solute MgSO. 0.6188 NaOH CH, OH 12.05 ΠΙ ΑΣΦ 1.65 M 0.530 M Mass of solute, Moles of solute Submit Previous Answers Request Answer X Incorrect; Try Again: 2 attempts remaining Part Complete the row for CH, OH Enter your answers...
A 35.0-ml sample of 0 150 Macetic acid (CH,COOH) is titrated with 0.150 M NaOH solution. Calculate the pH after the following volumes of base have been added. Part A O mL Express your answer using two decimal places. KALOOB ? pH Submit Request Answer Part B 17.5 ml. Express your answer using two decimal places EVO AZOO pl Subrni an
Constants Part A A cube has sides of length L 0.370 m It is placed with one corner at the origin as shown in the figure(Figure 1). The electric field is not uniform but is given by E-(-4.72 N/(C-m) )zi +(2.91 N/(C ) )zk Find the electric flux through each of the six cube faces S,S2, S3, S4,S,, and S Enter your answers in ascending order separated by commas (N/C).m2 Submit Part B Find the total electric charge inside the...
Titrations Part A A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 19.0 mL of HNO3. Express your answer numerically. Part B A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of NaOH. Express your answer numerically.