1 ppb - Study guides, Class notes & Summaries

ug/g - Answer- microgram per gram ug/ft2 - Answer- microgram per foot square (dust sampling) mg/cm2 - Answer- milligrams per centimeter squared (XRF) ug/dL - Answer- microgram per deci-liter ug/m3 - Answer- microgram per deci-liter (quantity in blood) 1% - Answer- 10,000 ppm Allowed quantity of lead in dry surface paint when testing with XRF. - Answer- 1.0 mg/cm2 Allowed quantity of lead in dry surface paint when testing with paint chip - Answer- 5000 ppm Allowed quantity...

ppm correct answers (grams analyte/grams sample)x10^6 Molarity correct answers moles analyte/liter of solution Volume Percent correct answers (volume solute/volume soution)x100 Volume ppm correct answers (volume solute/volume solution)x10^6 kilo- correct answers 10^3 deci- correct answers 10^-1 centi- correct answers 10^-2 milli- correct answers 10^-3 micro- correct answers 10^-6 nano- correct answers 10^-9 pico- correct answers 10^-12 femto- correct answers 10^-...

Chem 162 Final Exam Questions and Answers Latest Updated 2024/2025 (Graded A+) Chemistry definition correct answers Study of structure, properties, transformations of matter Matter correct answers Anything that has mass + takes up space Phases: solid, liquid, gas Condensed phases = solids + liquids Intermolecular Forces (IMF) correct answers = Interactions between molecules/atoms/ions Solution correct answers = Homogenous mixtures of 2+ pure substances In a solution, the solute is disperse...

microorganisms - organisms that are too small to be seen with an unaided eye microbes in our lives - <1% pathogenic decompose organic waste produces by photosynthesis industrial chemicals fermentation outnumber us What are some eukaryotic cells? - fungi, protozoans, algae What are some prokaryotes? - bacteria, viruses(not a cell) What word describes that microbes are everywhere, all around us? - they are ubiquitous What is an example of a microbe? - polar bear hairs are hollow in wa...

The fire triangle includes fuel, heat, and oxygen for a confined space - ANSWER-false You can remove another employee's lock out tag out lock if they have you permission - ANSWER-false In the Corpus Christi Texas grain elevator explosion, there was as many as 12 dust explosions in 2 minutes - ANSWER-true Since flour mills are cleaner than elevators and feed mills, they have very few ignition sources for a dust explosion - ANSWER-false Air and dust are only necessary to create an explosio...

Wastewater Treatment Operator Certification Test #4 Questions With correct Answers 1 mg/l is the same as 1 part per billion (ppb) True or False -ANSWER False (v.1 pg 468) A SCADA system is capable of monitoring and controlling equipment from a remote location True or False -ANSWER True (v.2 pg 627) A Discharge Monitoring Report is typically submitted to the regulatory agency on a daily basis True or False -ANSWER False A mechanical seal is used to prevent leaks between the p...

Chem 162 Final Exam Questions and Answers Latest Updated 2024/2025 (Graded A+) Chemistry definition correct answers Study of structure, properties, transformations of matter Matter correct answers Anything that has mass + takes up space Phases: solid, liquid, gas Condensed phases = solids + liquids Intermolecular Forces (IMF) correct answers = Interactions between molecules/atoms/ions Solution correct answers = Homogenous mixtures of 2+ pure substances In a solution, the solute is disperse...

How many PPB equals one PPM? - One thousand parts per billion equals one part per million If the bubbler system air supply line at the wet well is clogged, what will this cause the pump to do? - Pressure build up in the supply line would signal more water column then there really was, causing the pump to run longer than necessary, possibly not kick off and run continually If the bubbler system air supply line at the wet well has a hole in it above the water level, what will this cause the ...

Chem 162 Final Exam Questions and Answers Latest Updated 2024/2025 (Graded A+) Chemistry definition correct answers Study of structure, properties, transformations of matter Matter correct answers Anything that has mass + takes up space Phases: solid, liquid, gas Condensed phases = solids + liquids Intermolecular Forces (IMF) correct answers = Interactions between molecules/atoms/ions Solution correct answers = Homogenous mixtures of 2+ pure substances In a solution, the solute is disperse...

EPA Lead Exam Questions and Answers 100% Pass 1%= ___ppm 10,000 Allowable amount of lead in dry surface paint wit hXRF 1.0mg/cm2 allowed quantity of lead in dry surface paint with paint chip testing 5000ppm = 5% by weight dust clearance for floors 40 ug/ft2 dust clearance window sills 250ug/ft2 dust clearance for wells 400 ug/ft2 dust clearance for outside concrete 800 ug/ft2 clearance for in soil high contact 400 ppm clearnce for soil in low contact areas 1200 ppm allowable lead in wat...