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Question 20 0.5 pts The blood serum acetone for a person is determined to be 26.1...
Question 17 0.5 pts 0.25 mol of solid glucose (C6H120) is dissolved in 100. mL of...
Question 17 0.5 pts 0.25 mol of solid glucose (C6H120) is dissolved in 100. mL of water, what is the (w/w%)-(3 SF) Question 18 0.5 pts What is the w/w% if 293.7 g is dissolved in 1.00 L of water to give a density 1.18 g/mL D Question 19 0.5 pts What is the concentration in V/V% for 250 mL of solution contains 13.1 mL of acetone. (3 SF)
Question 25 0.5 pts How many mLs of 0.15 M AgNO3 will react with exactly with...
Question 25 0.5 pts How many mLs of 0.15 M AgNO3 will react with exactly with 25.0 mL of a 0.200 M solution of NaCl (3 SF) NaCl (aq) + AgNO3 (aq) --> NaNO3 (aq) + AgCl (s) Question 26 0.5 pts How many mL of 0.115 M NaOH will react with exactly with 22 mL of a 0.210 M solution of H2SO4 (3 SF) 2 NaOH(aq) + H2SO4 (aq) --> Na2SO4 (aq) + 2 H20 (1)
Question 12. Complete on the answer sheet.A patient has 012 mg/ml of Mg?t in blood serum. Is this...
#13***
Question 12. Complete on the answer sheet.A patient has 012 mg/ml of Mg?t in blood serum. Is this within the normal range (1.5-2.5 mEq/L)? Explain your answer.(S pts) Question 13. Complete on the answer sheet. A maintenance solution t of solution, it a patient receives 2350 mt of the IV solution, how many moles of HPo,were delivered? (5 pts Question 14, Complete on the answer sheet. A İL intravenous fluid OV) bag reads 5% (in/v) destrose (GHao. What is...
Question 3 0.5 pts The solubility of NaCI in water at 20°C is 35.89 g per...
Question 3 0.5 pts The solubility of NaCI in water at 20°C is 35.89 g per 100 mL of water. If the concentration of NaCI in water is 7.36 M at 20°C, what will the resulting solution look like if the temperature remains constant? O Unsaturated OSaturated with no undissolved solids O Supersaturated Saturated with some undissolved solids
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
Question 3 5 pts Gold nanoparticles are typically prepared by the reduction of aurochloric acid (HAUCla)...
Question 3 5 pts Gold nanoparticles are typically prepared by the reduction of aurochloric acid (HAUCla) with boiling sodium citrate. The sodium citrate is used in excess and it is assumed that 100% of the Au atoms end up as part of the nanoparticles. If you start with a 1.00% (w/w) aqueous solution of HAC14:3H20 (aurochloric acid is typically available as the trihydrate) and the average particle diameter is 20.0 nm, what is the concentration of Au nanoparticles in the...
help with all 6 questions please Question 24 1 pts An isotonic solution of NaCl is...
help with all 6 questions please
Question 24 1 pts An isotonic solution of NaCl is 0.90% w/v. Suppose you start with a teaspoon (5.69 g) of NaCl and dissolve it in water. How many total mL would the solution need to be to be isotonic? Give to at least two significant figures? Question 25 1 pts A soft drink has a pH of 2. What will be the concentration of Ht? Give the exact number, without the unit. I...
Question 7 Working with buffers You need 100 ml of 120 mM phosphate buffer and you have two stock...
please hlep me answer those three questions asap.
Please ignore question 7.
Question 7 Working with buffers You need 100 ml of 120 mM phosphate buffer and you have two stock solutions from which you can make the buffer; 0.6 M NaH2PO4 (the acid form) and 0.6 M Na2HP04 (the base form). You need to add 3 times more of the base form than the acid form to achieve the desired pH. How will you make this solution? Question 8...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of th...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
D Question 4 5 pts 2b) There are 0.10 moles of N2O4 and 0.20 moles of...
D Question 4 5 pts 2b) There are 0.10 moles of N2O4 and 0.20 moles of NO 2 present in a 2.0 L container which may react according to: N2O4(g) = 2N028) Kp = 11 What is the value of Qp for the initial gas mixture? a. 4.0 b. 0.20 c. 0.40 d.5.0 . a. b. Consider the following equilibrium systems. Which direction will the reactions shift (reactants or products) when cooled? 200g + O2(g) = 2CO2(g) H2e+12(e)=2HI® H2(g) +126)...
Question 17 0.5 pts 0.25 mol of solid glucose (C6H120) is dissolved in 100. mL of water, what is the (w/w%)-(3 SF) Question 18 0.5 pts What is the w/w% if 293.7 g is dissolved in 1.00 L of water to give a density 1.18 g/mL D Question 19 0.5 pts What is the concentration in V/V% for 250 mL of solution contains 13.1 mL of acetone. (3 SF)
Question 25 0.5 pts How many mLs of 0.15 M AgNO3 will react with exactly with 25.0 mL of a 0.200 M solution of NaCl (3 SF) NaCl (aq) + AgNO3 (aq) --> NaNO3 (aq) + AgCl (s) Question 26 0.5 pts How many mL of 0.115 M NaOH will react with exactly with 22 mL of a 0.210 M solution of H2SO4 (3 SF) 2 NaOH(aq) + H2SO4 (aq) --> Na2SO4 (aq) + 2 H20 (1)
#13***
Question 12. Complete on the answer sheet.A patient has 012 mg/ml of Mg?t in blood serum. Is this within the normal range (1.5-2.5 mEq/L)? Explain your answer.(S pts) Question 13. Complete on the answer sheet. A maintenance solution t of solution, it a patient receives 2350 mt of the IV solution, how many moles of HPo,were delivered? (5 pts Question 14, Complete on the answer sheet. A İL intravenous fluid OV) bag reads 5% (in/v) destrose (GHao. What is...
Question 3 0.5 pts The solubility of NaCI in water at 20°C is 35.89 g per 100 mL of water. If the concentration of NaCI in water is 7.36 M at 20°C, what will the resulting solution look like if the temperature remains constant? O Unsaturated OSaturated with no undissolved solids O Supersaturated Saturated with some undissolved solids
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
Question 3 5 pts Gold nanoparticles are typically prepared by the reduction of aurochloric acid (HAUCla) with boiling sodium citrate. The sodium citrate is used in excess and it is assumed that 100% of the Au atoms end up as part of the nanoparticles. If you start with a 1.00% (w/w) aqueous solution of HAC14:3H20 (aurochloric acid is typically available as the trihydrate) and the average particle diameter is 20.0 nm, what is the concentration of Au nanoparticles in the...
help with all 6 questions please
Question 24 1 pts An isotonic solution of NaCl is 0.90% w/v. Suppose you start with a teaspoon (5.69 g) of NaCl and dissolve it in water. How many total mL would the solution need to be to be isotonic? Give to at least two significant figures? Question 25 1 pts A soft drink has a pH of 2. What will be the concentration of Ht? Give the exact number, without the unit. I...
please hlep me answer those three questions asap.
Please ignore question 7.
Question 7 Working with buffers You need 100 ml of 120 mM phosphate buffer and you have two stock solutions from which you can make the buffer; 0.6 M NaH2PO4 (the acid form) and 0.6 M Na2HP04 (the base form). You need to add 3 times more of the base form than the acid form to achieve the desired pH. How will you make this solution? Question 8...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
D Question 4 5 pts 2b) There are 0.10 moles of N2O4 and 0.20 moles of NO 2 present in a 2.0 L container which may react according to: N2O4(g) = 2N028) Kp = 11 What is the value of Qp for the initial gas mixture? a. 4.0 b. 0.20 c. 0.40 d.5.0 . a. b. Consider the following equilibrium systems. Which direction will the reactions shift (reactants or products) when cooled? 200g + O2(g) = 2CO2(g) H2e+12(e)=2HI® H2(g) +126)...
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