Exercise 1

8- Please I want answer with steps. Many thanks

Use the solutions listed to answer the questions that follow. A. 50. mL of 0.50 M NH3 (Kb = 1.8 x 10-5) B. 50. mL of 0.75 M NaOCl C. 50. mL of 0.50 M NaOH D. 50. mL of M 0.50 HCl E. 50. mL of 1.0 M M HOCL (Ka = 3.5 x 10-8) 1. Select the combination(s) of solutions that will produce a buffered solution (select all that apply). Please give me an answer from A through E.

Please solve the question!

Use the solutions listed to answer the questions that follow. A. 50. mL of 0.50 M NH3 (Kb = 1.8 x 10-5) B. 50. mL of 0.75 M NaOCl C. 50. mL of 0.50 M NaOH D. 50. mL of 0.50 HCl E. 50. mL of 1.0 M M HOCL (Ka = 3.5 x 10-8) 1. Write the equation that represents the chemical reaction occurring when solutions A and D are combined. 2. Select the combination(s) of solutions that will produce a "best buffer solution" with pH = pKa 3. Determine the pH of the solution that results when solutions B and C are combined.

Each row of the table below describes an aqueous solution at about 25 °C. Complete the table. That is, fill in any missing entries in the second and third columns. Be sure each entry you write includes the correct number of significant digits. [1,0] solution pH -4 3.7 x 10 molL A Imol L 9.32 B 6.6 x 10 molL Show all ro BluebeardBrothers.xif Discussion week..doCx PO dayum.pdf 9:27 PM A *G 99 s4/2021 W P Type here to search hp insert prt sc 144 40 %23 %24 96 becksosce 2. 3 4. 8 Q R T. Y

Blank 1 is a phenomenon in which the dispersed particles of a colloid cannot be separated by filtration but scatter light, owing to the colloid's larger particles in comparison to homogeneous mixtures such as solutions. Blank 1 Add your answer

12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm (1.00 ppm = 1.00 × 10° kg/L). The concentration of nitrates in Morro Bay Estuary was measured this morning at 0.6411 mg/L. Does this meet EPA standards? Show your calculations and explain. -6 Name

Complete the sentences below: To make 4 liters of a 2.0 M solution you need to dissolve 8 moles of NaOHin enough water to make 4 liters of solution. 0.1 L of a 2.00 M solution of Na¿CO3 contains Write your response here.. 9 moles of Na2CO3 in Please type your answer to submit Write your response here. mL of water. Please type your answer to submit To make 750 mL of a 2.00M solution of H2SO4you would need to measure Write your response here.. ! grams of H2SO4. Please type your answer to submit

I have been trying to solve this many times and my answer is wrong please help me asap get to it and show all your steps. Also on the second pic there is a data needed to solve it. Remember don't round any number during math calculations only at the and for the final one pls and thank you!

Dissolving a solute such as LiOH in a solvent such as water results in ___. Group of answer choices no change in the boiling point of the liquid. decrease in the vapor pressure of the liquid. an increase in the freezing point of the liquid. an increase in the melting point of the liquid. a decrease in the boiling point of the liquid

1) Listen What is the concentration of a 100 mL methanol solution containing 0.025L of methanol (d = 0.792 g/mL)? O a) 6.18 M O b) 4.94 M O) 4.94 x 10 3 M. Previous Page Next Page Page 12 of 19 PM

For image attached please only do the majors and minor species solutions only

Calculate the van't Hoff factor (i) for MX2 at this concentration. O 1.9 O 0.76 O 3.0 O 2.8 Submit Previous Answers Request Answer

1. Solubility Test Table 1. Results for the solubility test. OBSERVATION* INFERENCE SAMPLE Ethyl acetate ** Нехаne Methanol Water Coconut oil Vitamin E Beef fat Miscible (soluble) or immiscible (insoluble) ** polar or nonpolar Sudan IV Test Table 2. Results for Sudan IV test. OBSERVATION* INFERENCE SAMPLE Нехаne Ethyl acetate Methanol Water ** Coconut oil Vitamin E Beef fat Homogeneous or heterogeneous mixture ** polar or nonpolar

1. Calculate the amount of HCl for preparing 0,5 M 100 ml HCI solution from the concentrated % 37 HCl solution with a density 1.18 g/ ml. (H:1, Cl: 35.5 g/mol)

Question 9 Why does a bottle of carbonated drink taste flat after it has been left open after a period of time? Answer using complete sentences. H. 三 BIUS X2 x? Vx Q 云 Enter your answer here. All

For 1-4. A solution is 90% H2SO4 has a density of 1.84 g/ml. Find the 15. mole fraction of the solute, 16. molarity, 17. molality and 18. normality of the solution   1. Mole fraction of the solute  A. 0.62 B. 0.92 C. 0.38 D. 0.56 2. Molarity  A. 6.2M B. 0.62M C. 1.701M D. 17.01M 3. Molality A. 92m B. 0.92m C. 0.092m d. 9.2m 4. Normality  A. 1.24 N B. 12.4 N C. 34.02 N D. 3.4 N

ASAP PLZZ TYPED ANSWERER PLZ

helpp asap!! An aqueous solution of hydrofluoric acid is 16.7% HF, by mass, and has a density of 1.101 g/mL. What is the molarity of HF (20.0 g/mol) in this solution? Write the numerical answer.