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II Review | Constants | Periodic Part A Find the mass of sodium formate that must...
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life...
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life of Xe-133 is 5.2 h, what will be the activity of the initially 28-mCi sample after 15.6 h? Express your answer using two significant figures. VO AQ O ? mCi You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Provide Feedback Next >
Find the mass of sodium formate that must be dissolved in 240.0 cm3 of a 1.2...
Find the mass of sodium formate that must be dissolved in 240.0 cm3 of a 1.2 M solution of formic acid to prepare a buffer solution with pH = 3.60. mNaCOOH=? Thanks!
Answer Part A-C please, thanks. II Review | Constants | Periodic Table A 0.32 mol amount...
Answer Part A-C please, thanks.
II Review | Constants | Periodic Table A 0.32 mol amount of NH3 is dissolved in 0.47 L of a 0.38 M silver nitrate solution. Kf = 1.7 x 107 Part A Calculate the equilibrium concentration of Ag+ in the solution. Express your answer to three significant figures and include the appropriate ? OCH HA Value O Units [Ag*)= Submit Request Answer Part B Calculate the equilibrium concentration of NH3 in the solution. Express your...
Review Constants Periodic You have to prepare a pH 3.65 buffer, and you have the following...
Review Constants Periodic You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa CH3COONa, and NaH2PO4 Submit Previous Answers ✓ Correct Part B How many milliliters of HCOOH and HCOONa would you use to make approximately a liter of the buffer? Express your answers using two significant figures. Enter your answers separated by a comma. EVO A£¢ N O P ? VHCOOH, VHCOONa = ml Your submission doesn't have the...
how many grams of sodium formate must be dissolved in a 0.300 M solution of formic...
how many grams of sodium formate must be dissolved in a 0.300 M solution of formic acid to make 400.0 ml of a buffer solution with a pH=4.60?
1 Review Constants Periodic Table You have to prepare a pH 5.07 buffer, and you have...
1 Review Constants Periodic Table You have to prepare a pH 5.07 buffer, and you have the following 0.10 M solutions available: HCOOH, HCOONa, CH, COOH, CH3COONa, HCN, and NaCN. Correct Part B How many milliliters of each solution would you use to make approximately a liter of the buffer? Express your answers using two significant figures. Enter your answers numerically separated by a comma. IVO AXO A O 2 ? Vch. cooh , Vch,cooNa = 333,667 Submit Previous Answers...
Answer Hequested Periodic Table Review I Constants I Part C Suppose you have 5.20 g of powdered m...
Answer Hequested Periodic Table Review I Constants I Part C Suppose you have 5.20 g of powdered magnesium metal, 1.25 L of 2.00 M potassium nitrate solution, and 1.25 L df 2.00 M silver nitrate solution. What volume of solution is needed to completely react with the magnesium? Express your answer with the appropriate units 0四? Units VValue Request Answer Submit ▼ Part D What is the molarity of the Mg ons in the resulting solution? Express your answer with...
13 of 25 Review | Constants Periodic Ta Part A 9.00x10- mol of HBr are dissolved...
13 of 25 Review | Constants Periodic Ta Part A 9.00x10- mol of HBr are dissolved in water to make 13.0 L of solution. What is the concentration of hydroxide ions, (OH), in this solution? Express your answer with the appropriate units. View Available Hint(s) MÅ [OH")- Value Units Submit Part B 8.00 g of NaOH are dissolved in water to make 2.00 L of solution. What is the concentration of hydronium ions, [H3O*), in this solution? Express your answer...
Review 1 Constants | Periodic Table Part A A current loop in a motor has an...
Review 1 Constants | Periodic Table Part A A current loop in a motor has an area of 0.95 cm2 It carries a 240 mA current in a uniform field of 0.62 T What is the magnitude of the maximum torque on the current loop? Express your answer with the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again
Review | Constants | Periodic Table Part A The absorption spectrum of the hydrogen atom shows lin...
Review | Constants | Periodic Table Part A The absorption spectrum of the hydrogen atom shows lines at 5334, 7804, 9145, 9953, and 10478 cm1. There are no lower-frequency lines in the spectrum. Use the graphical methods to determine ninitial. Assume values for ninitial of 1, 2, and 3. Express your answer as an integer. ninitial Submit Previous Answers Request Answer Incorrect; Try Again; 5 attempts remaining
Review | Constants | Periodic Table Part A The absorption spectrum of the...
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life of Xe-133 is 5.2 h, what will be the activity of the initially 28-mCi sample after 15.6 h? Express your answer using two significant figures. VO AQ O ? mCi You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Provide Feedback Next >
Answer Part A-C please, thanks.
II Review | Constants | Periodic Table A 0.32 mol amount of NH3 is dissolved in 0.47 L of a 0.38 M silver nitrate solution. Kf = 1.7 x 107 Part A Calculate the equilibrium concentration of Ag+ in the solution. Express your answer to three significant figures and include the appropriate ? OCH HA Value O Units [Ag*)= Submit Request Answer Part B Calculate the equilibrium concentration of NH3 in the solution. Express your...
Review Constants Periodic You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa CH3COONa, and NaH2PO4 Submit Previous Answers ✓ Correct Part B How many milliliters of HCOOH and HCOONa would you use to make approximately a liter of the buffer? Express your answers using two significant figures. Enter your answers separated by a comma. EVO A£¢ N O P ? VHCOOH, VHCOONa = ml Your submission doesn't have the...
1 Review Constants Periodic Table You have to prepare a pH 5.07 buffer, and you have the following 0.10 M solutions available: HCOOH, HCOONa, CH, COOH, CH3COONa, HCN, and NaCN. Correct Part B How many milliliters of each solution would you use to make approximately a liter of the buffer? Express your answers using two significant figures. Enter your answers numerically separated by a comma. IVO AXO A O 2 ? Vch. cooh , Vch,cooNa = 333,667 Submit Previous Answers...
Answer Hequested Periodic Table Review I Constants I Part C Suppose you have 5.20 g of powdered magnesium metal, 1.25 L of 2.00 M potassium nitrate solution, and 1.25 L df 2.00 M silver nitrate solution. What volume of solution is needed to completely react with the magnesium? Express your answer with the appropriate units 0四? Units VValue Request Answer Submit ▼ Part D What is the molarity of the Mg ons in the resulting solution? Express your answer with...
13 of 25 Review | Constants Periodic Ta Part A 9.00x10- mol of HBr are dissolved in water to make 13.0 L of solution. What is the concentration of hydroxide ions, (OH), in this solution? Express your answer with the appropriate units. View Available Hint(s) MÅ [OH")- Value Units Submit Part B 8.00 g of NaOH are dissolved in water to make 2.00 L of solution. What is the concentration of hydronium ions, [H3O*), in this solution? Express your answer...
Review 1 Constants | Periodic Table Part A A current loop in a motor has an area of 0.95 cm2 It carries a 240 mA current in a uniform field of 0.62 T What is the magnitude of the maximum torque on the current loop? Express your answer with the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again
Review | Constants | Periodic Table Part A The absorption spectrum of the hydrogen atom shows lines at 5334, 7804, 9145, 9953, and 10478 cm1. There are no lower-frequency lines in the spectrum. Use the graphical methods to determine ninitial. Assume values for ninitial of 1, 2, and 3. Express your answer as an integer. ninitial Submit Previous Answers Request Answer Incorrect; Try Again; 5 attempts remaining
Review | Constants | Periodic Table Part A The absorption spectrum of the...
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