Recent content by Javeria

So the solid in stage 2 and 3 are both barium nitrate?

H+1 and OH-1 form water and the other ions are spectator ions so they cancel out. OH OKAY. But then if they're disappearing why do they have a volume?

Homework Statement [/B] Q- Hydrated barium nitrate, Ba(NO3)2.4H2O, is strongly heated in a boiling tube and the following changes occur. Stage 1: The white solid forms a clear colourless solution. Stage 2: Condensation forms around the mouth of the boiling tube and a white solid starts to form...

Oh okay, how do the ions disappear?

Homework Statement 10.00 cm3 of 1.00 mol dm–3 sulfuric acid is fully neutralized by 20.00 cm3 of 1.00 mol dm–3 of sodium hydroxide. What is the concentration, in mol dm–3, of sodium sulfate solution produced by the reaction? A 0.33 B 0.50 C 0.67 D 1.00 Correct answer = A Homework Equations...

I finally got it, thank youuu

Yesss

I gett it noow, thank youuu soo muuch. Im not sure how to calculate the 1 year and 40 years max possible error but i get that for a year its going to be less than the 40 year difference, right? Yess and taking the average of the results or using a shorter length of pulse so the maximum...

Oh now i get it, thank youu So for one way (+-) 1.5 cm?

So, 3 cm? How was i supposed to know its been the max and lowest? How did you know? It doesn't say this anywhere in the question.

This is a 6cm difference between the maximum possible measured round-trip distance and the lowest possible. That is not the same thing as the maximum possible error in the one-way distance. I am not trying to get you to calculate relative error. I am trying to ask for the maximum absolute error...

You won't just give an answer, will you? Supposing 6cm difference then Uncertainty = (6*10^-5/405696)*100 = (+-)1.48*10^-8% Im not sure if I am doing it right

Less than the pulse length or around the length of the pulse

Ohh its okaay Yeps yeps got that too The calculated and true value won't be as different?

Are you asking how the pulse length and distance are related? The pulse length has to be double the distance being calculated Is this what you were asking? I am so sorry, I am really confused right now. How can the pulse width affect the distance? Isnt length the only thing that matters here?