Quantitative Analysis- Ch. 1 Chemical Measurements
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11 Terms
1
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Name the SI units for these quantities:
Length
Mass
Time
Current
Temperature
Amount of substance
Luminous intensity
Plane angle
Length
Mass
Time
Current
Temperature
Amount of substance
Luminous intensity
Plane angle
SI units for quantities answers:
Length → meter (m)
Mass → kilogram (kg)
Time → seconds (s)
Current → ampere (A)
Temperature → kelvin (K)
Amount of substance → mole (mol)
Luminous intensity → candela (cd)
Plane angle → radian (rad)
Length → meter (m)
Mass → kilogram (kg)
Time → seconds (s)
Current → ampere (A)
Temperature → kelvin (K)
Amount of substance → mole (mol)
Luminous intensity → candela (cd)
Plane angle → radian (rad)
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Special named SI- derived, what is their units?
Frequency
Force
Pressure
Energy, work, quantity of heat
Power, radiant flux
Electric charge
Electric potential
Electric resistance
Electric capacitance
Frequency
Force
Pressure
Energy, work, quantity of heat
Power, radiant flux
Electric charge
Electric potential
Electric resistance
Electric capacitance
Special named SI- derived units answer:
Frequency → hertz (Hz)
Force → newton (N)
Pressure → pascal (Pa)
Energy, work, quantity of heat → joule (J)
Power, radiant → work (W)
Electric charge → coulomb (C)
Electric potential → volts (V)
Electric resistance → ohm (Ω)
Electric capacitance → farad (F)
Frequency → hertz (Hz)
Force → newton (N)
Pressure → pascal (Pa)
Energy, work, quantity of heat → joule (J)
Power, radiant → work (W)
Electric charge → coulomb (C)
Electric potential → volts (V)
Electric resistance → ohm (Ω)
Electric capacitance → farad (F)
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Prefixes name what is their power? (Below base unit)
femto (f)
pico (p)
nano (n)
micro (u)
milli (m)
centi (c)
deci (d)
femto (f)
pico (p)
nano (n)
micro (u)
milli (m)
centi (c)
deci (d)
Power of prefixes below base unit:
femto (f) = 10^-15
pico (p) = 10^-12
nano (n) = 10^-9
micro (u) = 10^-6
milli (m)= 10^-3
centi (c)= 10^-2
deci (d)= 10^-1
femto (f) = 10^-15
pico (p) = 10^-12
nano (n) = 10^-9
micro (u) = 10^-6
milli (m)= 10^-3
centi (c)= 10^-2
deci (d)= 10^-1
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Prefixes name what is their power? (Above base unit)
deca (da)
hecto (h)
kilo (k)
mega (M)
giga (G)
tera (T)
peta (P)
deca (da)
hecto (h)
kilo (k)
mega (M)
giga (G)
tera (T)
peta (P)
Power of prefixes above base unit:
deca (da)= 10^1
hecto (h)= 10^2
kilo (k)= 10^3
mega (M)= 10^6
giga (G)= 10^9
tera (T)= 10^12
peta (P)= 10^15
deca (da)= 10^1
hecto (h)= 10^2
kilo (k)= 10^3
mega (M)= 10^6
giga (G)= 10^9
tera (T)= 10^12
peta (P)= 10^15
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How many pascals are in 1 atm?
101325 Pa = 1 atm
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Molarity (M)
(moles of solute)/ (Liters of soln.)
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Molality (m)
(moles of solute)/ (kg of solvent)
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What can percent composition be composed from?
w/w, v/v, or w/v x 100% (w=weight and v=volume)
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Parts per million (ppm) unit conversions
1 mg/ 1 L
1 ug/ 1 mL
1 ug/ 1 mL
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Parts per billion (ppb) unit conversions
1 ug/ 1 L
1 ng/ 1 mL
1 ng/ 1 mL
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Diluting Solutions equation:
M1V1= M2V2
M1= Stock solutions molarity
V1= Volume of stock solution put into new flask
M2= desired concentration
V2= total volume of desired dilution
M1= Stock solutions molarity
V1= Volume of stock solution put into new flask
M2= desired concentration
V2= total volume of desired dilution