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21. 250 mL of 0.135...
If 20.9 mL of 0.071 M hydrochloric acid (HCI) solution is added to 21 mL of...
If 20.9 mL of 0.071 M hydrochloric acid (HCI) solution is added to 21 mL of 0.132 M ammonia (NH3) solution, what is the pH value of the mixed solution at 25°C? (Kb for NH3 = 1.8 x 10-5); Please keep your answer to two decimal place x.xx.
A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of...
A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of 1.0 M NaH2PO4. How many moles of HCl must be added to this buffer solution to change the pH by 0.18 units? The answer is .025mol Please use chart if possible. Show all steps and calulations please
Need help with these please :) Thanks What mass of sodium hypochlorite, NaOCI (molar mass 74.5...
Need help with these please :)
Thanks
What mass of sodium hypochlorite, NaOCI (molar mass 74.5 g/mol), must be added to 250 mL of 0.60 M HCIO (hypochlorous acid, K.-3.5 x 10"), in order to produce a solution having a pH of 7.257 (Ans. ; A 25.0-mL sample of 1.00 M NH, is titrated with 0.15 M HCl. What is the pH of the solation after 15.00 mL of acid have been added to the ammonia solution? K,-1.8 x 10'(Ans,pH-...
please i need help with these questions... thanks so much Use the References to access important...
please i need help with these questions... thanks so
much
Use the References to access important values if needed for this question. How many grams of solid ammonium chloride should be added to 1.00 L of a 0.174 M ammonia solution to prepare a buffer with a pH of 9.850 ? Breg grams ammonium chloride = 2reg 2reg Submit Answer Retry Entire Group 4 more group attempts remaining A 49.5 ml sample of a 0.302 M aqueous acetic acid solution...
Can you please provide detailed answers to the below question Question B2: (a) 100 mL of...
Can you please provide detailed answers to the below
question
Question B2: (a) 100 mL of a 0.5 M solution of potassium nitrate is mixed with 100 mL of a 0.5 M solution of potassium chloride. What is the final concentration of hydrated potassium ions in this solution? (1 out of 5 marks) (b) How many moles of silver nitrate can be added to 100 mL of a 0.1 M aqueous sodium chloride solution before precipitation of solid silver chloride...
Please check if question 18 is right, and please answer and explain 11,12, and 20 Phenol...
Please check if question 18 is right, and please answer and
explain 11,12, and 20
Phenol (abbreviated PhoH) is a weak acid with a K, value of 1.3x10-10. What is the pH of 0.25 M PhOH? O 0.60 O 9.28 5.24 8.76 QUESTION 11 A 2.00 mL solution of 0.00800 M Fe(NO), is mixed with 3.00 mL of 0.00300 M NASCN to form the blood red FeSCN2+ complex. Calculate the concentration of Fe3+ in the combined solution before any formation...
Vmax = 3.423 µM/sec and enzyme concentration is 250 ug/mL how do I Calculate Kcat? the...
Vmax = 3.423 µM/sec and enzyme concentration is 250 ug/mL how do I Calculate Kcat? the enzyme is alkaline phosphatase and its MW is 140 kDa Additional information: Alkaline phosphatase: 500 µg/mL stock solution in reaction buffer. # [Enzyme] ug/mL Alkaline phosphatase (µL) Buffer (µL) Total volume (µL) 1 100 200 1800 2000 2 125 250 1750 2000 3 150 300 1700 2000
How do you make a 0.03 M H3AsO3 (150 mL) solution from NaAsO2? Please show calculations!
How do you make a 0.03 M H3AsO3 (150 mL) solution from NaAsO2? Please show calculations!
Question: Diffraction of wave. Please explain in detailed how to do this kind of problem(prob 9)...
Question: Diffraction of wave. Please explain in
detailed how to do this kind of problem(prob 9)
last first 4 pts) Parallel wavefronts are incident on a slit of width a, as shown. Consider the six wavelets going at an angle θ. The path length difference of the wavelet pair (1, 4) is 1/2. Do the wavelets cause a bright fringe, dark fringe, or neither on a screen a distance L away, where L is much larger than d? 2 A...
Please provide detailed solution, so I can understand how you reached the answer. Thanks :) 18....
Please provide detailed solution, so I can understand how you
reached the answer. Thanks :)
18. The distortion properties of the MOSFET cir- cuit below are captured by the nonlinear transconductance equation ipsi = a1 Vesi + az Vasi where a1 = 0.01A/V and a3 = -0.1A/V9. [Parallels Example 11.5 on Page 688] VDD Ry=250 g (a) What is IIP3 in terms of voltage? (b) What is OIP3 in terms of voltage?
If 20.9 mL of 0.071 M hydrochloric acid (HCI) solution is added to 21 mL of 0.132 M ammonia (NH3) solution, what is the pH value of the mixed solution at 25°C? (Kb for NH3 = 1.8 x 10-5); Please keep your answer to two decimal place x.xx.
Need help with these please :)
Thanks
What mass of sodium hypochlorite, NaOCI (molar mass 74.5 g/mol), must be added to 250 mL of 0.60 M HCIO (hypochlorous acid, K.-3.5 x 10"), in order to produce a solution having a pH of 7.257 (Ans. ; A 25.0-mL sample of 1.00 M NH, is titrated with 0.15 M HCl. What is the pH of the solation after 15.00 mL of acid have been added to the ammonia solution? K,-1.8 x 10'(Ans,pH-...
please i need help with these questions... thanks so
much
Use the References to access important values if needed for this question. How many grams of solid ammonium chloride should be added to 1.00 L of a 0.174 M ammonia solution to prepare a buffer with a pH of 9.850 ? Breg grams ammonium chloride = 2reg 2reg Submit Answer Retry Entire Group 4 more group attempts remaining A 49.5 ml sample of a 0.302 M aqueous acetic acid solution...
Can you please provide detailed answers to the below
question
Question B2: (a) 100 mL of a 0.5 M solution of potassium nitrate is mixed with 100 mL of a 0.5 M solution of potassium chloride. What is the final concentration of hydrated potassium ions in this solution? (1 out of 5 marks) (b) How many moles of silver nitrate can be added to 100 mL of a 0.1 M aqueous sodium chloride solution before precipitation of solid silver chloride...
Please check if question 18 is right, and please answer and
explain 11,12, and 20
Phenol (abbreviated PhoH) is a weak acid with a K, value of 1.3x10-10. What is the pH of 0.25 M PhOH? O 0.60 O 9.28 5.24 8.76 QUESTION 11 A 2.00 mL solution of 0.00800 M Fe(NO), is mixed with 3.00 mL of 0.00300 M NASCN to form the blood red FeSCN2+ complex. Calculate the concentration of Fe3+ in the combined solution before any formation...
Question: Diffraction of wave. Please explain in
detailed how to do this kind of problem(prob 9)
last first 4 pts) Parallel wavefronts are incident on a slit of width a, as shown. Consider the six wavelets going at an angle θ. The path length difference of the wavelet pair (1, 4) is 1/2. Do the wavelets cause a bright fringe, dark fringe, or neither on a screen a distance L away, where L is much larger than d? 2 A...
Please provide detailed solution, so I can understand how you
reached the answer. Thanks :)
18. The distortion properties of the MOSFET cir- cuit below are captured by the nonlinear transconductance equation ipsi = a1 Vesi + az Vasi where a1 = 0.01A/V and a3 = -0.1A/V9. [Parallels Example 11.5 on Page 688] VDD Ry=250 g (a) What is IIP3 in terms of voltage? (b) What is OIP3 in terms of voltage?
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