Recent content by ditto_299

So, I know how to solve them in general, but this one in particular, what do you do when the sin or cos etc is squared? 6sin^2 a - 11sin a + 4 = 0 , domain is from -360 until 360 degrees we learned that, you need to isolate sin a, and then find the possible angles. I just need to know how...

if I am doing a reaction of acids and bases, do i just use the specific heat capacity of 4.18J, or is there a different one for different solutions?!?

I did an experiment with a) strong acid (HCl) and strong base (NaOH) b) weak acid (ethanoic) and strong base (NaOH) so, I am looking at the heat of energy for both the reactions, and so i found that reaction a had a greater heat of energy was that of the reaction b) weak acid and...

thanks i actually figured it out but, i forgot whether M x cm^3 equaled to some other unit?

c = 1mol/dm3 v = 25cm3 would i have to keep the units constant, as in multiply the 25cm3 by 1000?? Thanks!

I'm doing a lab where i need to calculate the heat energy, or enthalpy using the equation (delta) H = m x c x T my reactions are going to be of a strong acid and a strong base: Sulfuric Acid + Sodium Hydroxide→ Sodium Sulfate + Water and of a wek acid and the same strong base...

so I am doing a lab on acid and bases and acid and metal reactions, and i have to calculate the energy change, heat -what would be a difference in the reactions with the heat?? - which one would be faster??