like gas constant ( R=0.082L atm L/K mol)
do we need to memorize constant or do they provide us with those constant??
do we need to memorize constant or do they provide us with those constant??
Do we need to memorize value of constant??(chem)
- Thread starter Peoni
- Start date
- Joined
- Apr 7, 2011
- Messages
- 191
- Reaction score
- 2
Uhhh...that's probably the only constant you'll need to know, so, yeah.
.082 isn't hard to remember right? Just round it to .1 and take 10% of whatever n*T is (in PV=nRT) and divide it by either P or V to get what you want. Boom goes the dynamite!
I went in with tons of constants memorized and didn't use any, but hey, you might have to. #1 thing to learn is how to do problems really, really fast without actually writing anything down. Mental math and equation manipulation is your friend for the PCAT.
.082 isn't hard to remember right? Just round it to .1 and take 10% of whatever n*T is (in PV=nRT) and divide it by either P or V to get what you want. Boom goes the dynamite!
I went in with tons of constants memorized and didn't use any, but hey, you might have to. #1 thing to learn is how to do problems really, really fast without actually writing anything down. Mental math and equation manipulation is your friend for the PCAT.
THank you for your input!!
I am currently using Kaplan + Dr. Collins for chm section and it seems that Kaplan has lot more stuff in it than Dr. collins as bio section.
what did you use for studying the chm section???
owlegrad
Uncontrollable Sarcasm Machine
Staff member
Administrator
Volunteer Staff
Lifetime Donor
15+ Year Member
- Joined
- Mar 19, 2009
- Messages
- 25,393
- Reaction score
- 12,074
Who doesn't know Avogadro's Number by heart?
- Joined
- Jan 7, 2011
- Messages
- 1,132
- Reaction score
- 1,389
- Joined
- Jul 26, 2011
- Messages
- 79
- Reaction score
- 0
I think in most cases constants would cancel out in calculation. However, it doesn't hurt to know important values such as:
gas constant
avogadro's number
volume of one mole of an ideal gas (at STP = 22.4 L)
standard temperature: 0°C = 273.15 K
standard pressure = 1 atmosphere = 760 mmHg = 101.3 kPa
Similar threads
