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Chm325A
Test 1
Question | Answer |
---|---|
Mass | kilogram (kg); base unit |
Length | meter (m); base unit |
Time | second (s); base unit |
Temperature | kelvin (K); base unit |
Amount of substance | mole (mol); base unit |
Electric current | ampere (A); base unit |
Luminous intensity | candela (cd); base unit |
Volume | Liter 10^-3 m^3 (L) |
frequency | Hertz 1/s (Hz) |
force, weight | Newton kg m s^-2 (N) |
temperature | Degree Celsius K-273.15 (degree C) |
voltage | Volt m^2 kg s^-3 A^-1 (V) |
yotta- (Y) | 10^24 |
zetta- (Z) | 10^21 |
exa- (E) | 10^18 |
peta- (P) | 10^15 |
tera- (T) | 10^12 |
giga- (G) | 10^9 |
mega- (M) | 10^6 |
kilo (k) | 10^3 |
hecto- (h) | 10^2 |
deca- (da) | 10^1 |
deci- (d) | 10^-1 |
centi- (c) | 10^-2 |
milli- (m) | 10^-3 |
micro- (u) | 10^-6 |
nano- (n) | 10^-9 |
pico- (p) | 10^-12 |
femto- (f) | 10^-15 |
atto- (a) | 10^18 |
zepto- (z) | 10^-21 |
yocto- (y) | 10^-24 |
What is weight? | W=mg (N) |
What is avogadro's number? | 6.022*10^23 |
What is weight percent? | (weight solute/weight solution)*100% (w/w)*100% |
What is volume percent? | (volume solute/volume solution)*100% (v/v)*100% |
What is Weight/Volume percent | (weight solute, g/weight solution, mL)*100% (w/v)*100% |
What is p units? | -log |
What is the basic rule of dilution? | VC=VC |
What is the Empirical Formula? | Simplest whole number ratio of atoms in a chemical compound. |
What is a Molecular Formula? | Specifies the number of atoms in a molecule. |
What is a systematic error? | Mean data differs from true value, affect accuracy. |
What is a Random error? | Data is scattered around mean, affect precision. |
What is a gross error? | "Outlier" occasional result that differs significantly from other results in the measurement. |
What causes a systematic error? | instrumental error, human error, or method error |