Homework Statement
From burning 7,2 litres of an alkyne, we get 26,4 grams of carbon dyoxide CO2 and 5,4 grams of H2O. Determine the formula of the alkyne.
Homework Equations
CnH2n-2+[(3n-1)/2]O2=nCO2+(n-1)H2O
The Attempt at a Solution
x litres of Alkyne→n x 44grams of CO2
7,2...
Okay, I understand. Is this okay?
Ro'(1+αΔt)>Ro(1+αΔt)
Ro'x1,78>4x1,78
Ro'>4
I don't know how accurate I am, but the problem is asking me for the Rx resistance, which I haven't found, right?...
Should I calculate the resistance from R=Ro(1+αΔt) or R=Q/(I2xt)?
Either way the symbols just cancel themselves and I am stuck with unknown ones again...
Q/(I2xt)=Q'/(I2xt). The current and time are constant, right? So they cancel themselves and I end up with Q=Q'... Same thing goes for the...
Ughh, thanks for your reply, although I think I'm stuck again...
I separated R from the Q=I2Rt, which gives R=Q/(I2xt).
I treat the two resistances as a rate (Rx/R), which is Rx=Q1/(I2xt) and R=Q/(I2xt) but here's where I'm stuck, the problem doesn't ask for a specific heat, it just says...
Hi everyone! I've got to problems I need your help with, I would really appreciate it if you could help me.
1. Homework Statement
A conductor made out of copper (Cu) has a resistance of 4Ω in 20° Celcius. When current flows in the conductor, it's temperature rises to 220°C. In parallel...
Ive really tried but I'm clueless with both I am sorry :(.
At the second one I did the Work=Delta(Kinetic Energy) theorem, but I think I'm wrong. Wht formula do i have to use?
Hey guys, I have a test tomorrow in physics and although I'm a good student, physics is getting tougher this year (high school 1st year for me) and our teacher is really bad, her teaching skills are very poor. Plus, I've been absent for a couple of days when we had physics and I can't solve the...