04/23/22

The concentration of SO4 2- in a saturated solution of Ag2SO4 is 1.40 x 10^-2 mol/L at a certain temperature. Calculate the Ksp for the compound at this temperature.

(report to hundredths place in scientific notation)
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04/23/22

The Ksp for CdCO3 at a certain temperature is equal to 5.51x10^-12. What is the molar solubility of the compound at this temperature? (report answer to hundreths place in scientific notation)
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04/23/22

Balance the equation in basic conditions. Phases are optional. equation: N_{2}H_{4} + Cu(OH)_{2} -> N_{2} + Cu N2H4+Cu(OH)2⟶N2+Cu
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04/23/22

May I also get help with this as well please
The quantity of antimony in an ore can be determined by an oxidation‑reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so... more
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04/23/22

May I please get help on this as well.
Write two half‑reactions to describe each of these metal displacement reactions. Include phase symbols.Mg(s)+CoBr2(aq)⟶MgBr2(aq)+Co(s)oxidation half‑reaction:reduction half... more
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04/23/22

Am I able to get help with this please.
At 25 degrees C , the equilibrium partial pressures for the reactionA(g)+2B(g)↽−−⇀C(g)+D(g)were found to be Pa=4.95 atm, Pb=5.49 atm, Pc=4.79 atm, and Pd=5.76 atm.What is the standard change in... more
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04/23/22

Please help me with this
Calculate delta G  at 298 K for the reactionCS2(l)+3O2(g)⟶CO2(g)+2SO2(g)based on these... more
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04/23/22

how do I use these equations to find the enthalpy change for this reaction
4 NO(g)→2 NO2(g)+N2(g) △H=?kJ 1/2N2(g)+1/2O2(g)+NO(g) △H=+90.4 kJ 2 NO(g)+O2(g)→2 NO2(g) △H=-113.1kJ
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04/22/22

The reaction between 32.0 g of CH4 and excess oxygen gas produces 75.9 g of CO2 gas and some water. Determine the percent yield
 How many moles of CH, reacted? mass CH₁ = 32.0g/16.0'lg/mol Moles C*n_{n} = 2 molesb How many moles of CO2 could theoretically be produced 1mol and 2mol for I mol O2 H₂0. For 2.00 Moles CH4, we'll... more
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04/22/22

calculate the energy required to produce 90.19 g of Br2
Given the thermochemical equation:2 𝐻𝐵𝑟(𝑔)→H2(𝑔) + Br2(𝑙) ∆𝐻 = +72.4 kJ/molcalculate the energy required to produce 90.19 g of Br2
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04/22/22

calculate the mass of Cu
Given the thermochemical equation: 2Cu2)(s)-> 4Cu(s)+O2(g)  Δ H=+333.8 kJ/mol  calculate the mass that is produced when 667.0 kJ of energy is consumed. 
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04/22/22

Identify the limiting reactant and determine the mass of CO2 that can be produced from the reaction of 25.0 g of C3H8 with 2.3 moles of O2 according to he following equation: C3H8 + 5O2 = 3CO2 + 4H2O
As far as I understand it, I must divide the number of moles of each reaction by its stoichiometric coefficient to identify limiting reactants. But every time I do so I get a different answer. 
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04/22/22

a solution that is pH 14 is very acidic
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04/22/22

Chemistry help asap😭
What is the freezing point of a 0.20 m sucrose (nonelectrolyte)? Kf = 1.86 o C /m.Calculate the osmotic pressure of 0.2 M salt solution (NaCl) at 25 o C?
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04/21/22

Please help chem question

A 0.506 g sample of steam at 106.7 ∘C is condensed into a container with 5.39 g of water at 14.9 ∘C. What is the final temperature of the water mixture if no heat is lost? The specific heat of... more
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04/21/22

Chemistry and mole ratios
When 3.25 moles of Fe2O3 react with HCl, how many moles of FeCl3 are produced?
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04/21/22

Can some please answer this question for me I don’t understand

H2SO4(aq) + Pb(C2H3O2)2(aq) →PbSO4(s)+ 2 HC2H3O2(aq)Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid. If 16.7 g of sulfuric acid... more
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04/21/22

Can someone please answer this question

Given the following equation:2 N2 (g) + 3 H2 (g) → 2 NH3 (g)How many grams of H2 are required if 16 grams of NH3 is produced?  ________g H2
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04/21/22

At a certain temperature, the Kp for the decomposition of H2S is 0.805
H2S (g) ---> (and the reverse arrow) H2 (g) + S (g)Initially, only H2S is present at a pressure of 0.241 atm in a closed container. What is the total pressure in the container at equilibrium?
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04/21/22

At a certain temperature, the equilibrium constant, K, for the given reaction is 53.3
H2 (g) + I2 (g) ---> (and the reverse arrow) 2 HI (g) K = 53.3At this temperature, the reactants were placed in a container to react. If the partial pressures of H2 and I2 were each 0.700... more
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04/21/22

Hello! What is the reactant for NaOH (aq) + CuSO4 (aq) and also for Al (s) + CuCl2 (aq)?

I'm having trouble understanding our chemical reactions lesson at the moment. I've tried looking at other examples online but I can't comprehend them well. Any answers are appreciated. Thank you!
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04/21/22

prelab chem 108
For the balanced equation shown below, how many grams of C2H3O2Cl will react with 14.5 grams of HCl? 2C2H3O2Cl(g) + 3O2 (g) -->4CO2 (g) + 2H2O(g) + 2HCl (g)Referring to question 3, if a chemist... more
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04/21/22

Calculate the percentage composition NAHCO3 (baking soda).
SOMEONE PLEASE HELP MEEEE!!!
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04/21/22

What is the mass in grams of 6.72*10^27 molecules of Iron (II) nitrate?
I really need help with this question, SOMEONE PLS HELP!!!
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04/20/22

Cell Potential question

The standard electrode potential for Aluminum is found in Appendix 13 of the e-book (page 1107). Find the potential if the concentration of the ions in the solution is 0.546 M and the... more
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