Recent content by Joules23

Homework Statement What does the line spectrum reveal about the energy levels in an atom? The Attempt at a Solution The energy levels are quantized is that right?

I was reading this, and it seems similar to my problem

is that right? i thought i was supposed to get zero?

yes I am supposed to find Q Hows this: Add up all the Φ's to get -2400, then use ε0Φ=Q (-2400)(8.85x10^-12) = -2.124 x 10^-8 C

Homework Statement A charge Q is located inside a rectangular box. The electric flux through each of the six surfaces of the box is: Φ1=+1500 Φ2=+2200 Φ3=+4600 Φ4=-1800 Φ5=-3500 Φ6=-5400. (unit: N x m^2/C) What is Q?Homework Equations ΦE =Q/ε The Attempt at a Solution Add up all the Φ's to...

Homework Statement find the pH of: 100mL x .20M HOAc + 100mL x.10M Ba(OH)2 The Attempt at a Solution 100x.2 = 20mmol HOAc 100x.1 = 10mmol Ba(OH)2 20-10=10 10/200=.05M pOH = -log(.05) = 1.3 pH=14-1.3=12.7 Is this correct?

im still not understanding it... ok, insoluble = precipitate .. so are you saying for both #1 and #2, the ones present are AgCl, AgBr and BaSO4 ? btw, yes i am stupid

ok please let me know if i got this right for #1, the only one present is silver nitrate for #2 the only ones present are Copper(II) sulfate and iron(III)chloride Also what is meant by, "your next step?"

i still don't understand i looked on the chart for #1 and they all are Soluble... how would adding the HCl factor in with the chart HNO3 (3 is subscript) HSO4 (4 is subscript) 3NO3H (2nd 3 is subscript) HBr2 (2 is subscript) Those are what i got after adding the HCl to the silver nitrate...

1) A solution contains one or more of the following: Silver nitrate Potassium sulfate iron(III) nitrate Barium bromide You add one drop of hydrochloric acid (solution). There is a precipitate. Next you add one drop of barium nitrate (solution). There is no observable reaction...

1) mass (grams) of 111 gold atoms ---------- would i simply multiply the atomic weight of Au by 111? 2) Why is the atomic mass of S = 32.066? ---------- is it because this is how much the neutrons and protons weigh?

wouldnt a_{x} also be constant at 0m/s

At each moment during its flight, a projectile has a velocity v and an acceleration a. The components of these variables are: vx = x component of the velocity vy = y component of the velocity ax = x component of the acceleration ay = y component of the acceleration Which of these components...

How would i find the vertical component of the skiers velocity, when it does not give the velocity IS 11.7 the vertical component?

anyone? I am completely lost