A chemistry graduate student is given 500. mL of a 0.40μ ammonia (NH3) solution. Ammonia is a weak base with K₁=1.8×10¯5. What mass of NH4Cl should the student dissolve in the ní, solution to turn it into a buffer with pH = 9.68? You may assume that the volume of the solution doesn't change when the NH₂CI is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Inbo (534) Conv I Balar b Ansv Post CHE 101 C X с Chec bartl bartl The b My C Unkr O Sear E I ma G what app.101edu.co/# Bryant's Gmail Cascadia Canvas Lo... T GSBA Scholarship L... HOMEGROWN TRA... Learn Touch Typing... C The Science of Well... Investor360° ® Login ClickUp Reading list >> Question 38 of 40 Submit Determine the mass of solid NaCH:COO that must be dissolved in an existing 500.0 mL solution of 0.200 M CH:COOH to form a buffer with a pH equal to 5.00. The value of Ka for CH:COOH is 1.8 × 10-5. 1 2 3 NEXT > Let x represent the original concentration of CH:COO- in the water. Based on the given values, set up the ICE table in order to determine the unknown. CH:COOH(aq) + H2O(I) H:O*(aq) + CH:COO (aq) Initial (M) Change (M) Equilibrium (M) 5 RESET 0.200 5.00 -5.00 1.0 x 10-9 -1.0 x 10-9 1.0 x 10-5 -1.0 x 10-5 1.8 x 10-5 -1.8 x 10-5 x + 5.00 х- 5.00 x + 1.0 x 10 9 х- 1.0 x 109 x + 1.0 × 10-5 х- 1.0 х 105 x + 1.8 x 10-5 х- 1.8 х 10-5 + 11:01 PM e Type here to search 59°F 后 W…

Which functional group is represented in the box in this molecule

Inbo (534) Conv I Balar b Ansv Post CHE 101 C X The bartl bartl bartl Cher Unkr O Sear E I ma G what app.101edu.co/# Bryant's Gmail Cascadia Canvas Lo... T GSBA Scholarship L... HOMEGROWN TRA... Learn Touch Typing... C The Science of Well... Investor360° ® Login ClickUp Reading list >> Question 33 of 40 Submit What volume in milliliters of 0.0170 M Ca(OH)2 is required to neutralize 70.0 mL of 0.0300 M HBr? mL 1 4 C 7 8 9 +/- х 100 + 11:18 PM e Type here to search 59°F 后 8/26/2021 LO (8)

Inbo (534) Conv I Balar b Ansv Post CHE 101 C X с Chec bartl bartl The b My C Unkr O Sear E I ma G what app.101edu.co/# Bryant's Gmail Cascadia Canvas Lo... T GSBA Scholarship L... HOMEGROWN TRA... Learn Touch Typing... C The Science of Well... Investor360° ® Login ClickUp Reading list >> Question 39 of 40 Submit Determine the pH of a buffer formed by dissolving 20.0 g NaCH:COO into a 500.0 mL solution of 0.150 M of CH:COOH. Assume the volume of the solution does not change. The value of Ka for CH:COOH is 1.8 x 10-5. 1 2 NEXT > Based on the given values, set up ICE table in order to determine the unknown. CH:COOH(аq) + H2O(1) H;O*(aq) + CH:COO-(aq) Initial (M) Change (M) Equilibrium (M) 5 RESET 20.0 0.150 0.244 0.488 0.678 +x 20.0 + x 20.0 - x 0.150 + x 0.150 - x 0.244 + x 0.244 - 0.488 + x -X 0.488 - x 0.678 + x 0.678 - x + 11:03 PM e Type here to search 59°F W 8/26/2021 (8)

デジタル形式で段階的に解決 ありがとう!! SOLVE STEP BY STEP IN DIGITAL FORMAT Structure of Metal Materials: 8. A colleague calculated the density of iron with BCC structure using the following data of atomic radius equal to 1.24 Angstrom and atomic weight of 55.85 as follows: p = [(4 atoms / C. U.) x (55.85 g/atomic weight)/(atoms/atomic weight) / [2(1.24x108 cm)/√2]³ p = 68.8 g/cm³ Is the result obtained logical? Explain and justify your answer.

Give detailed Solution with explanation..don't give Handwritten answer

Would you help me whit this example (6) Thank you.

Q5. As part of the aspirin synthesis lab, the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out? Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as KOH. An example of such a balanced chemical reaction is shown here: C51H98O6 + 3KOH à C3H5(OH)3 + 3C16H31O2K Triglyceride                                        Soap If, during the saponification reaction, 231.5 g of C51H98O6 is mixed with 231.5 g of KOH and 160 g of soap is produced: Calculate the theoretical yield of soap (in grams), C16H31O2K, and indicate which species is the limiting reactant. Provide your answer to 2 decimal places (5). Calculate the percent yield for this reaction. Provide your answer to 1 decimal place (1). Show ALL steps and equations involved in your calculations. Remember to label all steps clearly and use appropriate units.

Please answer the following pertaining to analytical chemistry.