Nature of Analytical Chem

Unit 1

What are the most common units of mass

g, kg, mg

What are the common units of volume

mL, L, ML, cm³

What are common concentrations

M, m, %, ppm, ppb

What are common temps

C, K

What does kilo mean

10³

what does mili mean

10^-3

What does micro mean

10^-6

What does nano mean

10^-9

what does M mean

mols solute / L solution

What is molar mass

g/mol (periodic table)

What are the different types of %

weight, volume, weight/volume

What does weight % mean

mass solute/ mass solution x100

What does volume % mean

volume solute / volume solution x 100

what does weight/volume % mean

mass solute / ccolume solution x 100

what does ppm mean

mass substance / mass ample x 10⁶

what does ppb mean

mass substance / mass sample x 10⁹

What is density

g/mL or mass / volume

What is specific gravity

mass sample/ mass of equivelant volume of H20 or density substance / density of equiv H20

What numbers are always significant

non 0 integers

what does wt and vt always mean

g solute (moleucule given) / 100g solution

When are 0s significant

when they are in the middle of a number (20.01)

or when there is a decimal at the end of the 0s (21000.)

When are 0s not significant

where there is no decimal (2100000 = 2 sig)

when they are leading (.000021 = 2 sig)

for + and - how do you determine sig figs

go by the smallest decimal point

how do you determine sig figs when x and dividing

fewst number of sig figs

what is a log ex

log 339

what is an anti log ex

10³39

When doing logs how do you determine sig figs

#sig figs is how many decimals you keep in mantissa

when doing anti logs how do you determine sig figs

the og decimals in mantissa is how many sig figs the whole number ends with

What is the mantissa

the numbers after the decimal point

what is the character

integer numbers before the decimal