06/17/22

100cm3 buffer solution of 0.1M CH3COOH and 0.05M CH3COONa are added 3cm3 HCl 0.01M. Ph =?
I'm having trouble!
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06/09/22

2.848 mole of A (g) is placed in a 2.00 liter container at 600 °C. The equilibrium constant is 0.441. Find the concentrations of the reactant and both products once equilibrium has been reached.
The equation is 2 A (g) ⇋ B (g) + C (g)
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06/08/22

In 100cm3 buffer solution of 0.1M CH3COOH and 0.05M HCl are added 3cm3 HCl 0.01M. Ph =?
I'll wait for answer!
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08/03/21

If the Ksp of Pbl2 is 1.4 x 10 ^ - 8 M what is the molar solubility of Pb^ 2+ ?
If the Ksp of Pbl2 is 1.4 x 10 ^ - 8 M what is the molar solubility of Pb^ 2+ ?
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07/23/21

How much oxygen (in grams) will form from 31.2 kg of N2O5?
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07/23/21

Need help with this equilibrium question

need help solving this question with steps 5. Determine the hydronium ion concentration and hydroxide ion concentration in each solution.A) 0.95 mol/L hydrobromic acid. (2 marks)B)  0.012 mol/L... more
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07/23/21

Consider the following equilibrium

4NH3 + 3O2 <--> 2N2 + 6H2O∆H= -1531 kJa) State whether the concentration of the reactants and products would increase, decrease,or remain constant when:1) the temperature of the system is... more
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07/22/21

Need help with equilibrium questions

Need a solution to this question with working out if possible:230 mL of 0.0015 mol/L silver nitrate is added to 130 mL of 0.010 mol/L calcium acetate. Does a precipitate form? Ksp for silver... more
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07/22/21

How to balance the following redox reaction using half-reaction method
How to balance the following redox reaction using half-reaction method under basic conditionsSn(OH)42- + MnO4- ---> MnO2 + Sn(OH)62-thank u for taking the time to help me with this question
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07/21/21

Can someone please solve this problem?
Consider the reaction. 2Pb(s)+O2(g)⟶2PbO(s) An excess of oxygen reacts with 451.4 g of lead, forming 319.3 g of lead(II) oxide. Calculate the percent yield of the reaction.percent yield:
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07/19/21

I really need some help
Consider the following reaction:C5H12+8O2→5CO2+6H2OIdentify what main category of reaction it is. If possible, further categorize it into all other relevant types of... more
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07/19/21

Chemistry 122 j
Consider aqueous solutions of the following substances: I. (4 pts)Write aqueous acid or base ionization reactions for each II. (2 pts) Identify the conjugate of the substance givena) F-b) HNO3
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07/19/21

Chemistry 122 s
A quantity of 5.0 mL of 0.85 M glucose solution is diluted to a new volume of 250. mL. What is the concentration, in mol/L, of the new solution?
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07/19/21

Chemistry 122 d
What mass of (solid) KCl is needed to prepare 200. mL of 0.65 M solution?
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07/19/21

Chemistry 122 d
Briefly explain why an aqueous solution of calcium chloride would be considered an electrolyte but and aqueous solution of glucose (C6H12O6) would not. How would they behave differently in an... more
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07/18/21

Can someone please check-over my answers to these Chemistry questions?
1. Vapor pressure of any liquid _______.A. increases with increases in temperatureB. increases with decreases in temperatureC. is not affected by changes in temperatureD. increases with increases... more
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07/16/21

Someone please help me
Consider the reaction.2Pb(s)+O2(g)⟶2PbO(s) An excess of oxygen reacts with 451.4 g of lead, forming  of lead(II) oxide. Calculate the percent yield of the reaction.percent yield:__________%
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07/16/21

Can someone please answer this question
A student performed an experiment of heating a hydrate and obtained the following data. The mass of an empty crucible was 17.556g. The mass of crucible and a hydrate was 21.018 g. The mass of... more
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07/16/21

Can Someone please help me
Which of the following is NOT a hydrate? a. NiSO4 . 6H2O b. MgSO4 . 7 H2O c. NaCl d. Na2CO3 . H2O
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07/16/21

chemistry solubility question
100 ml of a 1.0x10^-4M BaCl2 solution is mixed with 100ml of a 1.0 x10^-5M PbSO4 solution. which of the statements below is true?The correct answer is. A PPT will form and the identity of the PPT... more
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07/15/21

Chemistry 122 d
A gas is collected over water at 25•C, and the volume inside the inverted container is equalized with the water level outside the container. The barometric pressure is 738.5 Torr, and the vapor... more
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07/14/21

Determine the amount of heat released when 5 g of ethane (C2H6) are combusted. ΔHcomb. of ethane = -1423 kJ/mol
Determine the amount of heat released when 5 g of ethane (C2H6) are combusted.ΔHcomb. of ethane = -1423 kJ/mol
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07/13/21

If the temperature of 141.9 L of a gas at 58.9 ºC falls by 6.6 Cº, what is the new volume of the gas if the pressure is constant?
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07/11/21

What is the shorthand notation that represents the following galvanic cell reaction?
What is the shorthand notation that represents the following galvanic cell reaction?Ba(s) + 2Ag(NO3)(aq) → Ba(NO3)2(aq) + 2Ag(s)
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07/10/21

Can someone please check-over my answers to these Chemistry problems?
(My answers are in bold.)Which of these acids is diprotic?A. HNO3B. H2CO3C. H3PO4D. HSO4–E. All of the AboveWhich of these acids is triprotic?A. HNO3B. H2CO3C. H3PO4D. HSO4–E. None of the... more
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