Ozone layer - Study guides, Class notes & Summaries

Test Bank for Organic Chemistry 4e 4th Edition by David R. Klein. ISBN-13: 9594 Full chapters test bank PDF TABLE OF CONTENTS 1 A Review of General Chemistry: Electrons, Bonds, and Molecular Properties 1 1.1 Introduction to Organic Chemistry 2 1.2 The Structural Theory of Matter 3 1.3 Electrons, Bonds, and Lewis Structures 4 1.4 Identifying Formal Charges 7 1.5 Induction and Polar Covalent Bonds 8 1.6 Reading Bond-Line Structures 11 1.7 Atomic Orbitals 14 1.8 Valence Bond Theory 17 1.9 Molecular...

EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution. As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 Ans a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the strato...

WGU D199 Exam Questions and Correct Answers in the last 10,000 years: - Answer-humans began modifying the land surface for growing food with advent of agricultural revolution the agricultural revolution roughly - Answer-coincides with a warm interglacial period that began about 11,700 years ago which is called the HOLOCENE era (warm stable climate) the last 270 years of the holocene ushered into the - Answer-INDUSTRIAL REVOLUTION when climate pollution began to increase dramatically th...

EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+ What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? Dont disolve iin water Each chlorine atom in the stratosphere can destroy how many ozone molecules? 100,000 ozone molecules Which refrigerant contains a CFC? R500, R12, R113 or R11? Theyre all CFC's HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? Hydrogen, chlorine, flouri...

A refillable refrigerant cylinder must not be filled above ______ of its full capacity. correct answer: 80% Ozone layer absorbs and scatters ________ from the sun correct answer: Ultraviolet light An award of up to ______ may be paid to a person supplying information that leads to a penalty against a technician who is intentionally venting. correct answer: $10,000 Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States correct answer: Jan...

The recovery process on an R-12 or R-134a A/C System should continue until a stable vacuum is held by the system for: - Answer 2 minutes A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature Technician A says that the refrigerant container should be placed in a cooler storage area before use Technician B says that the vapor in the container should be slowly vented into a refrigerant handling unit who's right - Answer ...

Cosmetology Chapter 18 Facials All of the following are reasons for cosmetologists to study facials, EXCEPT? A. It enables cosmetologists to improve the cell health, condition, and appearance of the client's skin B. It enables cosmetologists to recommend skin care products that will help clients achieve their desired results. C. It allows cosmetologists to offer services that help clients relax and feel better about themselves. D. It allows cosmetologists to prescribe medicated products...

the state of the refrigerant entering the metering device is? - Answer A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? - Answer R-503 what type of refrigerant is used in MEDIUM pressure appliances? - Answer R-500 what type of refrigerant is used in HIGH pressure appliances? - Answer R-410A and R-22 what device is located at the END of the liquid line? - Answer The expansion device. what type of refrigerants are the LEA...

OZONE layer protection; CFC exam Questions and correct solutions ozone construction exists as 3 basic forms sunlight strikes o2 molecules and splits them, the floating o atoms will "float" and come into contact with o2 to form the stratosphere is approx. how far away above earths surface normally there is a balance between the ___________ and ___________ of o3 o3 is stratosphere is essential to life and referred to as.. o3 in the stratosphere is destroyed when it combines with...