03/11/23

A piece of magnesium disappears in CuCl2 solution
I want you to mention in the results of the experiment that since the reaction that occurred is the dismantling of chemical bonds, it will be an exothermic reaction, and explain it, etc.
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03/11/23

The half-life for the zero order reaction A → Products is 276 s. What is the value of the rate constant for the reaction if the initial concentration of A is 0.417?
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03/09/23

Chemistry HW help
What mass of Au, in grams, will be deposited from a Au+ (aq) solution in an electrolytic cell that operates at 52.0 A for 1.00hour? (F = 96500 C/mol)
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03/09/23

Chemistry HW help
What mass of Co, in grams, will be deposited from a CO2+(aq) solution in an electrolytic cell that operates at 20.0 A for 4.25 hours? (F = 96500 C/mol)
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03/09/23

chemistry problem
Phosphorus pentachloride decomposes according to the chemical equationPCl5(g)↽−−⇀PCl3(g)+Cl2(g)𝐾c=1.80 at 250 ∘CPCl5(g)↽−−⇀PCl3(g)+Cl2(g)�c=1.80 at 250 ∘CA 0.3476 mol0.3476 mol sample... more
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03/09/23

what is the net ionic equation
For the chemical reaction2HBr(aq)+Ba(OH)2(aq)⟶2H2O(l)+BaBr2(aq)2HBr(aq)+Ba(OH)2⁢(aq)⟶2⁢H2O(l)+BaBr2⁢(aq)write the net ionic equation, including the phases.
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03/08/23

The decomposition of a generic diatomic element in its standard state is represented by the equation
The decomposition of a generic diatomic element in its standard state is represented by the equation1/2X2(g)⟶X(g)Assume that the standard molar Gibbs energy of formation of X(g)... more
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03/08/23

At 25∘C, the equilibrium partial pressures for the reaction
At 25∘C, the equilibrium partial pressures for the reaction3A(g)+4B(g)↽−−⇀2C(g)+3D(g)3A(g)+4B(g)↽−−⇀2C(g)+3D(g)were found to be 𝑃A=4.66, 𝑃B=4.77, 𝑃C=4.24, and 𝑃D=5.65 D=5.65 atm.What is the... more
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03/08/23

piece of magnesium disappear in cucl2
I want to ask what we can conclude from disappearing a piece of magnesium in CuCl2 experiment besides when we increase the amount of CuCl2 the temperature would increase. I want it for the... more
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03/08/23

gas stoich assignment
2C2H2+5O2=4CO2+2H2O If you have 62.3 grams of oxygen, how many liters of water could be produced?2CO+O2=2CO2 If you have 9.32 liters of O2 how many grams of CO2 could be produced?2CO+O2=2CO2 If... more
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03/08/23

I am confused about how to solve it.
What is the total number of moles of NH3(g) produced when 7.5 moles of N2(g) react completely with H2(g)?
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03/08/23

Gas Stoich assignment
2C2H2+5O2= 4CO2+2H2O Using the balanced equation : If you have 37.9 grams of C2H2 how many liters of carbon dioxide could be produced? 2C2H2+5O2=4Co2+2H2O If you have 130.0 liters of oxygen,... more
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03/08/23

Chemistry HW Help
What is the equilibrium constant K at 25 °C for an electrochemical cell when E° = -0.0113 V and n = 2? (F = 96500 J/(V- mol), R= 8.314 J/(mol K))
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03/08/23

Chemistry HW Help
What is the equilibrium constant K at 25 °C for an electrochemical cell when E° = +0.120 V and n = 2? (F = 96500 J/(V• mol), R= 8.314 J/(mol• K))
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03/07/23

Chemistry HW Help
Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction. NO3- (aq) + AsH3(s) -> NH3(g) + As(s)
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03/07/23

Chemistry HW help
Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction. NO3- (aq) + AsH3(s) -> NH3(g) + As(s)
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03/07/23

Chemistry HW help
Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction. IO3-(aq) + S2-(aq) --> IO-(aq) + SO2(g)
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03/07/23

100mL of a solution that is simultaneously 15.6 mg/mL malonic acid, 3.38 mg/mL MnSO4 • H2O, and 0.03% starch

Calculate the g and mL necessary to make this solution
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03/07/23

Write the formula of the conjugate acid of the Brønsted-Lowry base, HONH₂
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03/07/23

Chemistry HW help
You are shown a voltaic cell in which the cathode is Cu and the anode is an unknown metal, X. You measure E°(cell) to be 0.74V. The cell reaction is X(s) + Cu2+(aq) -> X2+(aq) + Cu(s). The... more
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03/07/23

How many grams of beryllium fluoride are needed to prepare 250.0 mL of 0.224 M F−?
You wish to prepare 250.0 mL of a 350.0 ppm w/v fluoride (MW = 18.9984 g/mol) solution. How many grams of beryllium fluoride ( BeF2 , MW = 47.01 g/mol) are needed to prepare this solution?... more
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03/07/23

Chemistry pls helpppp
How many liters of hydrofluoric acid are produced if 4.00 g of hydrogen gas is reacted with excess fluorine gas at STP?H2 +  F2  --->  HF
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03/07/23

Write the net ionic equation, including phases, that corresponds to the reaction
Fe(NO3)2(aq)+K2S(aq)⟶FeS(s)+2KNO3(aq)
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03/07/23

Consider the titration of a 60.0 mL of 0.367 M weak acid HA (Ka = 4.2 x 10⁻⁶) with 0.400 M KOH. What is the pH before any base has been added?
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03/06/23

Can I get help on this?
A 6.00 mol sample of solid A was placed in a sealed 1.00 L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it... more
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