04/12/22

Given the equation: 3 Fe (s) + 4 H2O (g) -- Fe304 (g) + 4 H2(g) When 6 moles H2O is mixed with 7 moles Fe, which is the limiting reagent?

Given the equation: 3 Fe (s) + 4 H2O (g) --) Fe304 (g) + 4 H2(g) When 6 moles H2O is mixed with 7 moles Fe, which is the limiting reagent?
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04/12/22

Chem Titration need help urgent
One of the titration curves in the diagram represents the titration of an aqueous sample of Na2CO3 with strong acid; the other represents the titration of an aqueous sample of NaHCO3 with the same... more
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04/12/22

What is the value of Kc for this reaction at 298 K?
In glycolysis, the hydrolysis of ATP to ADP is used to drive the phosphorylation of glucose (GLC):GLC + ATP <--> ADP + GLC -- 6 -- phosphate∆G°= -17.7 kJWhat is the value of Kc for this... more
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04/12/22

What is the ΔG° of the reaction at 350 K in kJ/mol?
An aqueous reaction at 350 K has an equilibrium constant (Kc) of 5.74 × 10-2 .What is the ΔG° of the reaction at 350 K?______ kJ/mol
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04/12/22

Find the equilibrium constant
Carbon disulfide is a foul-smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane. For the reaction (below), ΔHrxn° =... more
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04/11/22

calculating volume in chemistry
Calculate the volume, in liters, occupied by  .990 mol of oxygen gas at STP.
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04/11/22

Equilibrium Chemistry problem
Consider the following equilibrium reaction in a closed gas container with a constant volume: (= is the arrow that goes both ways) H2(g)+I2(g)=2HI(g) At some point, an amount of deuterium gas (D2)... more
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04/11/22

In the chemical reaction below, which substance is the base?

HX + HY ←→ X- + H2Y
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04/11/22

Which answer choice below shows an incorrect pairing of an acid and its conjugate base?

H2O, OH-HC2H3O2, C2H3O2-HF, F+HNO3 , NO3-
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04/11/22

chemistry hw help
At 1120 K, ∆G° = 53.9 kJ/mol for the reaction 3 A (g) + B (g) →2 C (g). If the partial pressures of A, B, and C are 11.5 atm, 8.60 atm, and 0.510 atm respectively, what is the free energy for this... more
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04/11/22

Hydrocyanic acid, HCN, dissociates in water according to the chemical equation: HCN (aq) ⇆ H+ (aq) + CN- (aq)
Calculate the pH of a 0.345 M solution of hydrocyanic acid. 
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04/11/22

How many grams of MgCl2 will be produced if you have 15 g of Mg(OH)2 and 25 g of HCl?
Can you please answer these? Thank you
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04/11/22

What are the moles of CO2, mass percent CaO, and percent of BaO?
A mixture of solid calcium oxide, CaO,CaO, and solid barium oxide, BaO,BaO, weighing 3.918 g3.918 g is added to a 2.00 L2.00 L flask containing carbon... more
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04/11/22

chemistry homework
A 483−g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 gof water at 22.8°C. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/°C,... more
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04/10/22

Plz help. Strong acid
Part AFor the strong acid solution 0.0626 M HBr, determine [H3O+] and [OH-].Part BFor the strong acid solution 1.7×10−3 M HNO3, determine [H3O+] and [OH-]
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04/10/22

Finding the pH of a buffer question
What is the pH of a buffer made from 0.350 mol of HBrO (Ka = 2.5 × 10⁻⁹) and 0.160 mol of KBrO in 2.0 L of solution?
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04/09/22

Chemistry Titration Question

Find the pH during the titration of 20.00 mL of 0.1860 M benzoic acid, C6H5COOH (Ka = 6.3  10-5), with 0.1860 M NaOH solution after the following additions of titrant. Please use correct number of... more
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04/09/22

Chem 212 Finding Qsp and Ksp
Does any solid Ag2CrO4 form when 7.0  10-5 g of AgNO3 is dissolved in 15 mL of 4.7  10-3 M K2CrO4? Assume no volume change. Yes, precipitate will form.No, precipitate will not... more
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04/09/22

Predict where the largest jump between successive ionization energies occurs for Sr .
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04/09/22

chemistry - Equilibrium
CaCO3 calcium carbonate only partially dissolves in an aqueous medium according to the reaction: (= is supposed to be arrows that go both ways since I can not type that on my laptop) CaCO3(solid) =... more
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04/09/22

Le Chatelier's princple
In which of the following reactions will an increasing pressure at constant temperature favor the formation of products?(= is the arrow that goes both ways since I can not type that on my laptop)A.... more
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04/09/22

what is the mole ratio for benzaldehyde and cinnamic acid

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04/09/22

2C8H18 + 25O2 → 16CO2 + 18H2O If you burn 3.1 L of octane gas (C8H18) at 300 K and 0.68 atm, how many grams of water will you produce?
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04/09/22

If 87 grams of sulfuric acid were used in the following reaction, how many liters of hydrogen would be collected at STP? 2Fe + 3H2SO4 → 3H2 + Fe2(SO4)3
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04/09/22

How many liters of O2 ,at STP, are required for the complete combustion of 25.7 L of butane, C4H10, at STP? Butane is the fuel in disposable lighters. 2C4H10 + 13O2 → 8CO2 + 10H2O
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