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ALEKS Modules 1-7 Questions and Answers 100% Solved
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Exam of 10 pages for the course ALEKS at ALEKS (ALEKS Modules 1-7)
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ALEKS Modules 1-7Fahrenheit Equation - answerTf=(Tc x 9℉/5℃) + 32℉
Celsius Equation - answerTc= 5℃/9℉ (Tf - 32℉)
More Equations - answerEp=h x v
c=weird symbol x v
Average Velocity of a Gas Particle - answerVrms = square root (3RT/MM)
R= gas law constant
T= temperature
MM= molar mass of gas particles
Base for log - answerIt is 10
10^5
log10(100,000)=5
Base for ln - answere
Euler's number
Rules for Counting Significant Figures - answer1. Any non-zero digit in a measurement
is significant (11325 has 5 sig figs)
2. Zeros between non-zero digits are considered significant (4003 has 4 sig figs)
3. Zeros to the left of the first non-zero digit are insignificant (0.072 has 2 sig figs)
4. Zeros to the right of the non-zero digits are significant only when the number contains
a decimal point (400.0g has 3 sig figs whereas 400g only has 1 sig fig)
Form of Scientific Notation - answerN x 10^M
N is a number between 1.000 and 9.999
Ex: 400 = 4.0 x 10^2
Rules for Using Significant Figures - answerMultiplication/Division: must have same
number of sig figs as lowest number
Addition/Subtraction: last common place rule
, Logarithms: numbers after decimal are significant. Round answer to whole
SI Prefixes - answerFactor = Prefix
10^12 = tera (T)
10^9 = giga (G)
10^6 = mega (M)
10^3 = kilo (K)
10^-2 = centi (c)
10^-3 = milli (m)
10^-6 = micro (µ)
10^-9 = nano (n)
10^-12 = pico (p)
10^-15 = femto (f)
Rule of Thumb for Prefix Conversion - answerIf the prefix gets smaller, the number
should get bigger. If the prefex gets bigger, the number should get smaller.
Conversion Factor - answeran equality showing the same measurement expressed in
two different units
Some conversion factors:
1 ft = 12 in
2.54 cm = 1 in
3.785 L = 1 gallon
Celsius to Kelvin Equation - answerK = ℃ + 273.15
Kelvin to Celsius Equation - answerC = K - 273.15
Freezing Point of water on the Kelvin scale - answer273.15
Density - answerthe ratio of the mass of a substance contained in its volume
D = M/V
Density Units:
Solid; g/cm^3
Liquid; g/mL
Gas; g/L
Scientific Method - answerProcess of studying natural phenomenon
Steps:
Making onservations --> Forming hypotheses --> Preforming experiments
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