Recent content by Madelin Pierce

I’m confused on how to calculate molar solubility because I don’t see what’s the difference between that and Ksp.

Homework Statement Homework EquationsThe Attempt at a Solution I don’t have a clue on how to do the calculations. I know the equivalency point is at the steepest part of the derivative graph. Please don’t say just figure it out, I truly need help. I haven’t learned titrations in lecture yet...

I use the equation Kp=Kc(RT)^change in n. I plug in Kp=(.0415)(.08206)(629.15)^1= 2.1425. Then, I solve for PV=nRT for PCl5: P(2.00L)=(.100mol)(.08206)(629.15K), equaling 2.5814atm. I use Kp= Products/Reactants which is 2.1425=x^2/(2.5814-x) where the Xs are from an ice table. I was told by my...

Homework Statement Kc = 4.15 x 10-2 at 356°C for PCl5(g) ↔ PCl3(g) + Cl2(g). A closed 2.00 L vessel initially contians 0.100 mol PCl5. Calculate the total pressure in the vessel (in atm to 2 decimal places) at 356°C when equilibrium is achieved. Homework Equations PV=nRT Kp= Kc(RT)^change in...

I know the reaction reversed and doubled. But I don’t know how to solve for Kc mathematically with this set-up.

Homework Statement Kc = 1.37 for HI(g) ↔ 1/2 H2(g) + 1/2 I2(g). What is Kc (to 3 decimal places) for H2(g) + I2(g) ↔ 2HI(g)? Homework Equations Kc= Products/Reactants, Ice Tables The Attempt at a Solution I tried an ice table, but I’m not sure what to do with the Kc value I’m given when I...

Homework Statement A reaction has a rate constant of 0.0117/s at 400.0 K and 0.689/s at 450.0 K. What is the value of the rate constant (to 1 decimal place) at 538 K? Homework Equations ln k= ln A-E[a]/RT The Attempt at a Solution I'm not sure how to approach this problem, although I know...

Homework Statement Aluminum metal dissolves in hydrochloric acid. What volume, in mL, of 1.58 M HCl is needed to completely dissolve 3.200 g of aluminum?(Hint: write the single-replacement reaction first) Homework Equations V[1]M[1]=V[2]M[2] The Attempt at a Solution I got the...

Homework Statement Problem: Predict the products between aqueous calcium nitrate and aqueous ammonium phosphate. Homework EquationsThe Attempt at a Solution 3Ca(NO[3])[2](aq) + 2(NH[4])[3]PO[4](aq) = Ca[3](PO[4])[2] + 6(NH[4])(NO[3]) I'm not sure what the states of matter would be on the...

Homework Statement How do I determine whether something will go counterclockwise or clockwise? I know the hands of the clock idea, but how do I know in a torque problem? Also, how do I know what force will bring something into equilibrium? Homework EquationsThe Attempt at a Solution

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I don't what it is

Homework Statement Calculate the power needed to heat a 1360 gram chunk of ice in a 600 gram copper pan from 0 ◦C to the system’s final temperature of 35◦C in a time of 10 minutes. Homework Equations Q=mcchange in temp Q=mLf P= energy/time The Attempt at a Solution I thought that adding the...

Kinetic energy would be zero because the problem indicates the word stop as in rest. Potential energy is there as the person is higher above ground than before. I do think it's a P= energy/time problem

Homework Statement Calculate average power output for a 75 kilogram person walking from ground level up stairs to a final height of 100 feet (then stops) in a time of 3 minutes Homework Equations P= work/ time or P=Fv The Attempt at a Solution I thought this was more of an energy problem...