A 3.82 L volume of gaseous ammonia, NH3 (g), at STP is bubbled through 100.0 mL...
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3.82 L volume of gaseous ammonia, NH3 (g), at STP is bubbled
through 100.0 mL...
Consider the reaction that occurs when gaseous ammonia reacts with solid copper(ll)oxide: 2NH3(g) + 3Cu(s) –...
Consider the reaction that occurs when gaseous ammonia reacts with solid copper(ll)oxide: 2NH3(g) + 3Cu(s) – N2(g) + 3Cu(s) + 3H2O(g) What volume (in mL) of NH3 is required to completely react 45.2 g of CuO at STP? Enter your solution as a numerical value with no units. NumericAnswer
A solution of household ammonia is 3.0 % NH3(aq) and has a density of .98 g/ml....
A solution of household ammonia is 3.0 % NH3(aq) and has a density of .98 g/ml. What is the molar concentration of the NH3(aq)? Given that the Kb for NH3(aq) = 1.8x10‒5, what is the predicted pH of this solution? Thank you in advance
2. You are in the lab; you dissolve 12.0 g NiCl2-6H2O (nickel chloride hexahydrate FW=237.69 g/mol);...
2. You are in the lab; you dissolve 12.0 g NiCl2-6H2O (nickel chloride hexahydrate FW=237.69 g/mol); you add a large excess of ammonia (NH3) in the form of concentrated ammonium hydroxide (NH4OH) and bring the solution to the mark in a 250 mL volumetric flask. The following nickel-amine complexes can be assumed to occur in the solution along with free nickel ion. Ni(NH3)2+ Ni(NH3)22+ (aq) Ni(NH3)3 2+ (aq) Ni(NH3)42 (aq) Ni(NH3)2+(aq) Ni(NH3)62+(aq) (a) Write a mass balance on Ni (for...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
1- What mass (in g) of AgNO3 is required to make 100.0 mL of a 0.100...
1- What mass (in g) of AgNO3 is required to make 100.0 mL of a 0.100 M solution? 2. You are preparing 2.00 L of a 1.00 M solution of hydrochloric acid. You have a stock bottle of concentrated acid (12 M). How much 12 M acid do you need to make your dilution in mL? 3-What volume (in mL) of 0.125 M AgNO3 is required to react completely with 35.31 mL of 0.225 M Na3 PO4? The balanced reaction...
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water....
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added and the resulting solution is titrated with 2.50 M HCl(aq)solution. The indicator changes color signaling that the equivalence point has been reached after 17.0 mL of the hydrochloric acid solution has been added. Part B What is the identity of the alkali metal cation: Li+, Na+, K+, Rb+, or Cs+? Li+ Na+ K+ Rb+ Cs+ Part A What is...
A 1.00 liter solution contains 0.34 M ammonia and 0.44 M ammonium bromide. If 0.110 moles...
A 1.00 liter solution contains 0.34 M ammonia and 0.44 M ammonium bromide. If 0.110 moles of barium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of barium hydroxide.) _______TrueFalse A. The number of moles of NH3 will increase. _______TrueFalse B. The number of moles of NH4+ will remain the same. _______TrueFalse C. The equilibrium concentration of H3O+ will remain the same. _______TrueFalse...
6. 48.6 mL of a 0.100 M NaOH solution is needed to react with 20.0 mL...
6. 48.6 mL of a 0.100 M NaOH solution is needed to react with 20.0 mL of an unknown concentration of HCl solution. What is the concentration of the HCl solution? 7. A colorless liquid has a composition of 84.1% carbon and 15.9% hydrogen by mass. Determine the empirical formula. Also, assuming the molar mass of this compound is 114.2 g/mol, determine the molecular formula of this compound. 8. What is the concentration of HCl in the final solution when...
Which of the following statements is correct for 25.0 mL of 3.0 M NHz solution? (NH3...
Which of the following statements is correct for 25.0 mL of 3.0 M NHz solution? (NH3 has a molar mass of 17.0 g.) 1.5 grams of solute is present. 0.075 moles of solute is present. 75 milligrams of solute is present. 25.0 mL of solvent is present. Question 24 2 pts For a solution composition of 25.0 g solute and 100.0 g solvent; choose the correct numerical concentration of% (m/m). 20.0 15.0 10.0 25.0
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all...
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
Consider the reaction that occurs when gaseous ammonia reacts with solid copper(ll)oxide: 2NH3(g) + 3Cu(s) – N2(g) + 3Cu(s) + 3H2O(g) What volume (in mL) of NH3 is required to completely react 45.2 g of CuO at STP? Enter your solution as a numerical value with no units. NumericAnswer
2. You are in the lab; you dissolve 12.0 g NiCl2-6H2O (nickel chloride hexahydrate FW=237.69 g/mol); you add a large excess of ammonia (NH3) in the form of concentrated ammonium hydroxide (NH4OH) and bring the solution to the mark in a 250 mL volumetric flask. The following nickel-amine complexes can be assumed to occur in the solution along with free nickel ion. Ni(NH3)2+ Ni(NH3)22+ (aq) Ni(NH3)3 2+ (aq) Ni(NH3)42 (aq) Ni(NH3)2+(aq) Ni(NH3)62+(aq) (a) Write a mass balance on Ni (for...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
6. 48.6 mL of a 0.100 M NaOH solution is needed to react with 20.0 mL of an unknown concentration of HCl solution. What is the concentration of the HCl solution? 7. A colorless liquid has a composition of 84.1% carbon and 15.9% hydrogen by mass. Determine the empirical formula. Also, assuming the molar mass of this compound is 114.2 g/mol, determine the molecular formula of this compound. 8. What is the concentration of HCl in the final solution when...
Which of the following statements is correct for 25.0 mL of 3.0 M NHz solution? (NH3 has a molar mass of 17.0 g.) 1.5 grams of solute is present. 0.075 moles of solute is present. 75 milligrams of solute is present. 25.0 mL of solvent is present. Question 24 2 pts For a solution composition of 25.0 g solute and 100.0 g solvent; choose the correct numerical concentration of% (m/m). 20.0 15.0 10.0 25.0
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
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