Structure 1.4-1.5

No description yet. This curated deck is ready for daily study.

Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

What is the Avogadro constant?

Back (Answer)

number of particles in one mole of substance 6.02 x 10ˆ23

Front (Question)

What is a mole?

Back (Answer)

the unit used to measure the amount of substance by the number of elementary entities etc

Front (Question)

How many elementary entities are in one mole?

Back (Answer)

the avogadro constant - 6.03*10^23

Front (Question)

To which isotope are masses of atoms compared to?

Back (Answer)

on a scale relative to C-12

Front (Question)

How to we calculate the relative formula mass Mr for a compound?

Back (Answer)

adding the masses of all the atoms in the formula

Front (Question)

What are the units of molar mass M?

Back (Answer)

g/mol

Front (Question)

number of moles =

Back (Answer)

mass/Mr

Front (Question)

What is the empirical formula of a compound?

Back (Answer)

the formula that gives the simplest ratio of atoms of each element present in the compound

Front (Question)

What is the molecular formula?

Back (Answer)

the formula that gives the actual number of atoms of each element in a molecule

#10

Front (Question)

Empirical vs molecular

Back (Answer)

empirical: simplest ratio molecular: actual number

#11

Front (Question)

number of moles (in a solution) =

Back (Answer)

concentration(moldmˆ-3) * volume(dmˆ3)

#12

Front (Question)

What is the molar mass?

Back (Answer)

the mass of one mole of a substance

#13

Front (Question)

How can you calculate percentage compositions? (of an atom in a compound)

Back (Answer)

mass of atoms/total molar mass of the compound * 100

#14

Front (Question)

What is concentration?

Back (Answer)

number of particles/moles in a given volume

#15

Front (Question)

one litre =

Back (Answer)

one dmˆ3 and 1000 cmˆ3

#16

Front (Question)

concentration in g/dmˆ3

Back (Answer)

mass of solute/total vol of solution

#17

Front (Question)

concentration in mol/dmˆ3

Back (Answer)

mols of solute/total vol of solution

#18

Front (Question)

What determines how many gas particles can fit inside a container?

Back (Answer)

• volume of container: bigger volume allows for more particles • temperature of the gas: faster particles need more space • pressure of the gas: more particles means higher pressure

#19

Front (Question)

What is the general Avogadro’s law for gases reacting?

Back (Answer)

equal volumes of all gases contain equal numbers of molecules under constant temperature and pressure

#20

Front (Question)

Percentage uncertainty:

Back (Answer)

absolute uncertainty/data value *100

#21

Front (Question)

volume of a gas =

Back (Answer)

22.7*n

#22

Front (Question)

What are concordant titres?

Back (Answer)

those within 0.2cmˆ3 of each other

#23

Front (Question)

How can concentration be expressed?

Back (Answer)

in square brackets

#24

Front (Question)

Apparatus needed to prepare a primary standard solution:

Back (Answer)

mass balance and volumetric flask