Chemistry problem, help please
When doing a somewhat complex chemistry problem (for me at least), do you round at the end or at each step? This is with significant figures.
Here's an example problem (if you feel like doing it):
Phoebe's insulated foam cup is filled with .150kg of coffee (S=4187 J/kg°C) that is too hot to drink, so she adds .01kg of milk (S=3800 J/(kg°C) at 5.0°C. If the coffee has an initial temperature of 70°C, how hot is the coffee after the milk is added? (What is the final temperature of the coffee and milk mixture?)
Remember: q = ms (delta) t
Also, if someone could explain Quantum chemistry in simple terms, that'd be great.
Thanks in advance.