Cl2 Study guides, Class notes & Summaries

the physical material of the universe. It is anything that has mass and occupies space. - Matter is made up of relatively few elements. - Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - Atom Each _______ is made of the same kind of atom - Element Combination of atoms held together in specific shapes - Molecule No fixed volume or shape, conforms to volume and shape of container, is compressible - Gas Individua...

Cl2 - ANSWER Chlorine boiler - ANSWER equipment that provides hot water or steam for various uses PRV - ANSWER PRESSURE RELIEVE VALVE NOWL - ANSWER Normal operating water level BTU - ANSWER British Thermal Unit absolute pressure - ANSWER gauge pressure (psi) + atmospheric pressure (14.7 psi) at sea level air changes per hour - ANSWER The hourly ventilation rate divided by the volume of a space. For perfectly mixed air or laminar flow spaces, this is equal to the number of times...

. A sample contains 8 g 8 gramsof a radioisotope that has a half-life of 10 years. How much time is required for the sample to decay until approximately 1 g one gramof the isotope remains in the sample? - ANSWER 30 years is correct. If the half-life of the substance is 10 years, then every 10 years the amount of the isotope is decreased by half. Thus, it requires three half-lives, or 30 years, for the isotope to decay until approximately 1 gone gram remains in the sample. 2. Which of the f...

Atoms - Matter is made up of Atom - The the smallest distinguishable part of an element Theories - Can change overtime according to the evidence available Electrostatic forces - ALL atoms/molecules attract to one another due to Attractions - ________ lower potential energy of a system Repulsions - _____ raise potential energy of a system The attractive and repulsive forces are EQUAL or the potential energy is at a minimum - Stable systems form where The well - The most stable part of a g...

Soil permeability procedure involves evaluating a soil core or test pit. What does the procedure yield? a. Permeability estimated seepage rate b. Permeability estimated application rate c. Permeability estimated range correct answer: b. Permeability estimate How does chlorine kill microorganisms and bacteria? a. By weakening enzymes and destroying internal organelles b. By attacking lipids in cell walls and destroying enzymes and structures inside c. By breaking bonds and poisoning...

For the reaction F2(g) ⇌ 2 F(g), the equilibrium constant at 223 °C is 7.3 x 10-13. If a sample of F2 is heated to 223 °C and allowed to reach equilibrium correct answer: nearly all of F2 will remain unreacted, with a very small amount of F present At equilibrium correct answer: the rate of the forward reaction is equal to the rate of the reverse reaction and the concentration of the reactants and products can be very different For the reaction 2 BrCl(g) ⇌ Br2(g) + Cl2(g), the equi...

What is the general definition of an ion? An _________ with a positive or negative charge (Ans- Atom A continuous positive pressure in a distribution system is essential for preventing what event? (Ans- Backflow Event _____________ water pressure must be maintained to ensure adequate customer service during peak flow periods. However, minimum positive pressure must be maintained in mains to protect against backflow or back siphonage from cross-connections. (Ans- Minimum Name the m...

REHS Practice Test(question and answers)graded A+ 2024Soil permeability procedure involves evaluating a soil core or test pit. What does the procedure yield? a. Permeability estimated seepage rate b. Permeability estimated application rate c. Permeability estimated range - correct answer b. Permeability estimate How does chlorine kill microorganisms and bacteria? a. By weakening enzymes and destroying internal organelles b. By attacking lipids in cell walls and destroying enzymes and...

Middle Grades Science GACE Exam Questions And Answers (Updated And Verified) What is a by-product of the fission process in a nuclear power plant and is of serious environmental concern? - answerRadioactive waste The pitch perceived by a musician listening to a sound is analogous to which wave properties? - answerFrequency The loud chirping noises made by crickets serve as the primary means by which crickets - answerattract mates Which subatomic particles has a negative charge? - answer...

Middle Grades Science GACE Exam Questions And Answers (Updated And Verified) What is a by-product of the fission process in a nuclear power plant and is of serious environmental concern? - answerRadioactive waste The pitch perceived by a musician listening to a sound is analogous to which wave properties? - answerFrequency The loud chirping noises made by crickets serve as the primary means by which crickets - answerattract mates Which subatomic particles has a negative charge? - answer...