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Which of the following is incorrect for the reaction below? 6 1^- (aq) + 4 H_2O(1)...
Which of the following is so oxidation-reduction reaction? A) Cu (s) + 2AgNO_3(aq) rightarrow 2Ag (s)...
Which of the following is so oxidation-reduction reaction? A) Cu (s) + 2AgNO_3(aq) rightarrow 2Ag (s) + Cu(NO_3)_2 (aq) B) HCl(aq) + NaOH(aq) rightarrow H_2O (l) + NaCl(aq) C) AgNO_3(aq) + HCl (aq) rightarrow AgCl (s) + N\HNO_3(aq) E) H_2CO_3(aQ) + Ca(NO_3)_2 (aq) rightarrow 2HNO_3(aq) + CaCO_3(s) How many moles of K^+ are present in 343 mL of a 1.27 M solution of K_3PO_4? A) 0.436 B) 1.31 C) 0.145 D) 3.70 E) 11.1 What is the concentration (M) of...
All of the following are incorrect formulas of a salt except a. CaCl_2 b. MgF_3 c....
All of the following are incorrect formulas of a salt except a. CaCl_2 b. MgF_3 c. LiN_2 d. NaBr_4 e. Cal Which formula/name is NOT correct? a. CaH_2/calcium hydride b. N_2O_4/dinitrogen tetraoxide c. Al_2(SO_4)3/aluminum sulfate d. Cu_2S/Copper(I) Sulfide e. Na_2SO_3/sodium sulfate The correct Lewis formula for N_2H_4 is (each dash represents two electrons) What is the product of reaction of a strong acid with a strong base? a. water and a gas b. water and a precipitate c. water and...
Which of the following molecules or ions is NOT polar? PCl_3 I_3^- H_2O N_2O SO_2 An...
Which of the following molecules or ions is NOT polar? PCl_3 I_3^- H_2O N_2O SO_2 An iron ore, magnetite, contains only iron and oxygen. In refining 100.0g of the ore, 72.35 g of iron are obtained. What is the empirical formula of the ore? Fe_2O_3 Fe_2O_4 FeO_2 FeO Fe_2O_5 Fe_2O_2(s) and powdered aluminum can react with great output of heat to form molten iron and Al_2O_3 when this reaction equation is balanced, what are the stoichiometric coeeficients in the following...
prelab /postlab all questions please Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq)...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
Calculate the final temperature for each of the following mixtures. Assume no heat loss to the...
Calculate the final temperature for each of the following mixtures. Assume no heat loss to the environment. Show your method for part b. 50.0 g of water at 25.0 degree C is mixed with 50.0 g of water at 85.0 degree C. 75.0 g of water at 25.0 degree C is mixed with 25.0 g of water at 85.0 degree C. In Part B of this experiment, 0.10 g of Mg is added to 50. mL of 1.0M HCl. Which...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
5. Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) →...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
The q of the reaction shown below is -55 kJ/ mol of Al(OH)3 Al^3+ (aq) +...
The q of the reaction shown below is -55 kJ/ mol of Al(OH)3 Al^3+ (aq) + 3 OH^-1(aq) —> Al(OH)3 (s) a. What amount of heat is transferred to the surrondings when 1 mole of Al(OH)3 is formed from precipitation of its ions? b. Does the solution (the water) get warmer or cooler? c. Is the reaction endothermic or exothermic? d. How much heat is evolved when 25.00 grams of Al(OH)3 are formed? e. If the heat from part d...
I need help on 2. Sketch a voltaic cell based on the following reaction. (a) show...
I need help on 2.
Sketch a voltaic cell based on the following reaction. (a) show the direction of electron flow and the direction of ion migration: (b) identify the cathode and anode: (c) state the signs of the cathode and anode: (d) give the overall balanced reaction. (e) Write the half-reactions that occur in the two electrode compartments. (f) Calculate E degree, assume 25 degree C: (g) Write a cell diagram for the cell: (h) Calculate E when [Cr^3+]...
Problem 2. Consider the following reaction, which proceeds to completion 1 Tico3(aq) + 2 HCIO3(aq...
please answer all parts of the problem
Problem 2. Consider the following reaction, which proceeds to completion 1 Tico3(aq) + 2 HCIO3(aq) → 1 Ti(C103)2(aq) + 1 CO2(g) + 1 H2O(1) 24.73 g of Tico, reacts with 623 mL of 0.756 M HCİOg The temperature is 15.5 °C and total pressure is 18.1 psi? The vapor pressure of water at this temperature is 13.31 torr. a. Write the net ionic equation. b. Which ion is limiting (use the net ionic...
Which of the following is so oxidation-reduction reaction? A) Cu (s) + 2AgNO_3(aq) rightarrow 2Ag (s) + Cu(NO_3)_2 (aq) B) HCl(aq) + NaOH(aq) rightarrow H_2O (l) + NaCl(aq) C) AgNO_3(aq) + HCl (aq) rightarrow AgCl (s) + N\HNO_3(aq) E) H_2CO_3(aQ) + Ca(NO_3)_2 (aq) rightarrow 2HNO_3(aq) + CaCO_3(s) How many moles of K^+ are present in 343 mL of a 1.27 M solution of K_3PO_4? A) 0.436 B) 1.31 C) 0.145 D) 3.70 E) 11.1 What is the concentration (M) of...
All of the following are incorrect formulas of a salt except a. CaCl_2 b. MgF_3 c. LiN_2 d. NaBr_4 e. Cal Which formula/name is NOT correct? a. CaH_2/calcium hydride b. N_2O_4/dinitrogen tetraoxide c. Al_2(SO_4)3/aluminum sulfate d. Cu_2S/Copper(I) Sulfide e. Na_2SO_3/sodium sulfate The correct Lewis formula for N_2H_4 is (each dash represents two electrons) What is the product of reaction of a strong acid with a strong base? a. water and a gas b. water and a precipitate c. water and...
Which of the following molecules or ions is NOT polar? PCl_3 I_3^- H_2O N_2O SO_2 An iron ore, magnetite, contains only iron and oxygen. In refining 100.0g of the ore, 72.35 g of iron are obtained. What is the empirical formula of the ore? Fe_2O_3 Fe_2O_4 FeO_2 FeO Fe_2O_5 Fe_2O_2(s) and powdered aluminum can react with great output of heat to form molten iron and Al_2O_3 when this reaction equation is balanced, what are the stoichiometric coeeficients in the following...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
Calculate the final temperature for each of the following mixtures. Assume no heat loss to the environment. Show your method for part b. 50.0 g of water at 25.0 degree C is mixed with 50.0 g of water at 85.0 degree C. 75.0 g of water at 25.0 degree C is mixed with 25.0 g of water at 85.0 degree C. In Part B of this experiment, 0.10 g of Mg is added to 50. mL of 1.0M HCl. Which...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
I need help on 2.
Sketch a voltaic cell based on the following reaction. (a) show the direction of electron flow and the direction of ion migration: (b) identify the cathode and anode: (c) state the signs of the cathode and anode: (d) give the overall balanced reaction. (e) Write the half-reactions that occur in the two electrode compartments. (f) Calculate E degree, assume 25 degree C: (g) Write a cell diagram for the cell: (h) Calculate E when [Cr^3+]...
please answer all parts of the problem
Problem 2. Consider the following reaction, which proceeds to completion 1 Tico3(aq) + 2 HCIO3(aq) → 1 Ti(C103)2(aq) + 1 CO2(g) + 1 H2O(1) 24.73 g of Tico, reacts with 623 mL of 0.756 M HCİOg The temperature is 15.5 °C and total pressure is 18.1 psi? The vapor pressure of water at this temperature is 13.31 torr. a. Write the net ionic equation. b. Which ion is limiting (use the net ionic...
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