Chemical and Electrical Calculations Quiz

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does ppm stand for in concentration calculations?

Parts per million (correct)

Parts per measurement

Pulses per minute

Pressure per meter

Which formula is used to calculate the Time Weighted Average (TWA) concentration?

TWA = (C₁ + C₂) / T

TWA = (C × T) / T

TWA = C / T

TWA = (C₁ × T₁) + (C₂ × T₂) + ... / (T₁ + T₂ + ...) (correct)

What does TLV stand for in the context of chemical exposure?

Threshold Limit Value (correct)

Toxic Limit Value

Total Loss Value

True Lab Value

In the Combined Gas Law, what does the variable P represent?

Pressure Signup and view all the answers

What does the equation V = IR represent in electrical formulas?

Voltage equals Current times Resistance Signup and view all the answers

Which of the following correctly describes the LFL formula for a mixture?

LFL = 1 / (f₁/LFL₁ + f₂/LFL₂ + ...) Signup and view all the answers

In electrical systems, what does RSERIES denote?

Total resistance in a series circuit Signup and view all the answers

If 10 moles of oxygen were consumed in the oxidation process, how many grams of CO2 would be produced?

440 grams Signup and view all the answers

What is the new pressure in a 5L gas cylinder if it heats from 65°F to 110°F while maintaining a constant volume?

3100 psig Signup and view all the answers

What is the decay constant for 226Ra if its half-life is 1.36 × 10^-11 Bq per second?

1.36 × 10^-10 Bq Signup and view all the answers

How long will it take for a 1600-µCurie source of Ruthenium (Ru) to reduce to 100 μCurie?

1 year Signup and view all the answers

If a tank atmosphere contains 76% ambient air and 24% hydrocarbons, what is the oxygen content of the tank?

19.04% oxygen Signup and view all the answers

What is the formula to calculate the area of a circle?

πr² Signup and view all the answers

Which type of radiation is most penetrating?

Neutron radiation Signup and view all the answers

What is the formula for the half-life of a radionuclide?

T1/2 = 0.693 / k Signup and view all the answers

In the formula for volumetric flow rate Q = AV, what does A represent?

Cross-sectional area of the duct Signup and view all the answers

What is the relationship stated by sin A = sin B / sin C?

It is a ratio of sides of a triangle. Signup and view all the answers

Which shielding material is effective against alpha radiation?

Paper Signup and view all the answers

Which formula is used to calculate the velocity of gases in a duct?

V = 4005Ce SP Signup and view all the answers

What does the constant In 2 approximate in calculations involving radioactivity?

0.693 Signup and view all the answers

For which type of radiation would light metals like aluminum be an effective shielding material?

Beta radiation Signup and view all the answers

What is the formula for Capture Velocity when dealing with hoods without flanges?

V = Q / (10x² + A) Signup and view all the answers

What does WBGT stand for in the context of heat stress formulas?

Wet Bulb Globe Temperature Signup and view all the answers

How is the total sound pressure level Lpt generated by N sources calculated?

Lpt = 20log10(Σ₁ᴺ¹10⁰.₁ᴸᴾᶦ) Signup and view all the answers

In the formula for Lw, what does W represent?

Sound power in watts Signup and view all the answers

What is the significance of the 3-dB rule in noise exposure?

It halves the sound pressure for every 3 dB increase. Signup and view all the answers

What does the variable A represent in the Capture Velocity formula?

Cross-sectional area of the hood opening Signup and view all the answers

What does the variable λ represent in the context of reliability?

Failure rate Signup and view all the answers

Which equation provides the formula for calculating the z-score?

Z = (X - μ) / σ Signup and view all the answers

In the Outdoor Formula for WBGT, which variable represents Dry Bulb temperature?

DB Signup and view all the answers

What does the variable P₀ represent in the sound pressure level formula?

Reference sound pressure Signup and view all the answers

In the NIOSH Lifting Equation, what does RWL stand for?

Recommended Weight Limit Signup and view all the answers

What does the formula L = 20log10(P/P₀) calculate?

Sound pressure level in decibels Signup and view all the answers

What is the main purpose of the Poisson distribution?

To model the number of events in a fixed interval Signup and view all the answers

How is the Volumetric Flow Rate (Q) measured?

In cubic feet per minute [cfm] Signup and view all the answers

Which formula calculates the sample standard deviation?

S = √ (Σx² / (n-1)) Signup and view all the answers

In unit conversions, how many grams are in 1 kilogram?

1000 grams Signup and view all the answers

What does the variable P represent in the equation for combinations?

Number of combinations possible Signup and view all the answers

What does the variable 'd' stand for in the pressure velocity formula?

Internal diameter Signup and view all the answers

Which factor affects the angle of asymmetry in the NIOSH Lifting Equation?

Angular displacement of the load Signup and view all the answers

Which equation is used to calculate the reliability function R(t)?

R(t) = e⁻λᵗ Signup and view all the answers

Study Notes

ASP Math Equations and Formulas

Concentrations of Vapors and Gases Formulas:
- ppm = mg/m³ x 24.45 / MW
- ppm = parts per million in concentration
- mg/m³ = milligrams/cubic meter
- MW = Molecular Weight of the substance
Time Weighted Average (TWA):
- TWA = [(C₁ × T₁) + (C₂ × T₂) + ... + (Cₓ × Tₓ)] / (T₁ + T₂ + ... + Tₓ)
- C = Concentration of chemical
- T = Time of exposure
Lower Flammable Limit (LFL) of a Mixture:
- 1/LFLm = Σ(fᵢ/LFLᵢ)
- LFLm = Lower Flammable Limit of a mixture or solvent
- fᵢ = fraction by weight
Threshold Limit Value (TLV) of a Mixture:
- 1/TLVmix = Σ(fᵢ/TLVᵢ)
- TLVmix = Threshold Limit Value of a mixture
- fᵢ = fraction by weight (% expressed as a decimal 0.XX)

Electrical Formulas

V = IR or E = IR
- E or V = Voltage
- I = Current (Amperage)
- R = Resistance (Ohms)
RSERIES = R₁ + R₂ + ... + Rₙ
- R = Resistance (Ohms)
P = VI or P = EI
- P = Power (Watts)
- I = Current (Amperage)
- E or V = Voltage
1/RPARALLEL = 1/R₁ + 1/R₂ + ... + 1/Rₙ
- R = Resistance (Ohms)

Radiation Formulas

N = N₀e⁻ᵏᵗ
- N = radioactivity remaining after time t
- N₀ = radioactivity at a given original time
- t = elapsed time
- k = disintegration constant
- e = second function natural log
A = A₀e⁻ᵏᵗ
- A = radioactivity remaining after time t
- A₀ = radioactivity at a given original time
- t = elapsed time
- k = disintegration constant
T₁/₂ = In2 / k
- T₁/₂ = half-life of the radionuclide
- k = Disintegration constant
- In2 = 0.693 (natural log of 2)

Area and Volume Formulas

Circumference of a circle = 2πr or πd
Area of a circle = πr² or πd²/4
Area of a rectangle = length × width
Area of a triangle = 1/2 × base × height
Volume of a tank = πr²h or πd²h/4
Volume of a cube = length × width × height

Trigonometry Functions

sin A = a/c
cos A = b/c
tan A = a/b
a² + b² = c² (Pythagorean Theorem)

Engineering Control Calculations

Q = AV (Q = Volumetric Flow Rate, A = Cross-Sectional Area, V = Velocity)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on various calculations related to chemistry and electrical systems. This quiz covers topics such as concentration measures, gas laws, decay constants, and electrical formulas. Perfect for students looking to solidify their understanding of these scientific principles.