Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

chemistry > formulae equations and amounts of substance > Flashcards

formulae equations and amounts of substance Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

what is the mole

A

a unit of measurement for substances

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how many particles does every mole have

A

6.022x10^23

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is avogadros constant

A

the number of particles in a mole- 6.022 x 10^23

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

whats the equation for the number of particles

A

nL(moles x avagadro constant)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

whats the equation linking moles Mr and mass

A

moles=mass/molar mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the equation linking moles and concentration and volume

A

moles=concentrationxvolume/1000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the molar mass of a substance

A

its mass in grams per mole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is the unit for molar mass

A

gmol-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is the Ar(relative atomic mass ) defined as

A

the mean mass of an atom of an element compared to 1/12th the mean mass of the carbon 12 isotope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is realative molecular mass (Mr) defined as

A

the mean mass of a molecule of a compound compared to 1/12 the mean mass of an atom of the carbon 12 isotope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the empirical formula

A

the simplest whole number ratio of atoms of each element in a compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the molecular formula

A

the actual number of each atom in the molecule.

i

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how is the molecular formula determined

A

by using the Mr of the empirical formula and the true Mr of the molecule.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

whats the molecular formula equation

A

true mr=empirical formula x multiplier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the ideal gas equation

A

pV=nRT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what do all the letters in the ideal gas equation mean

A 
p=pressure
v=volume
n-number of moles
r=gas constant=8.31JK
t=temperature
17
Q

what are the four state symbols

A

s-solid
l-liquid
g-gas
aq-aqueous

18
Q

what do ionic equations show?

A

the reacting particles that undergo a change during a reaction and not the spectator particles

19
Q

what is a spectator particle

A

a particle that does not undergo a change in a rection

chemistry (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions