Measuring enthalpy change Study guides, Revision notes & Summaries

System - ANSWER-A system in thermodynamics is a space that may be defined as being isolated, meaning unable to exchange energy and matter with its environment, or closed, meaning it can exchange energy but not matter, and an open system that can exchange both. Any system contain internal energy that is defined by the state of that system. This thermodynamic state can be described by all substances and any two of the three variables: temperature, pressure, and volume. In an open or closed ...

thermodynamics - ANSWER-Branch of chemistry concerned with energy changes. energy - ANSWER-Capacity to do work. kinetic energy - ANSWER-Energy of motion. potential energy - ANSWER-Stored energy. heat - ANSWER-The most convenient way of measuring energy. 1 calorie - ANSWER-Heat required to raise one gram of water one degree Celsius. sun - ANSWER-Energy flows into the biological world from the ____. chemical bonds - ANSWER-Potential energy is stored in _______. oxidation - ...

1. Heat which causes a change in temperature of a substance is called; A. latent heat B. sensible heat C. superheat D. radiant heat - Answer B. sensible heat 2. Heat added to a substance without a raise in temperature; (example: liquid refrigerant to gas) this process is called? A. latent heat of vaporization B. latent heat of fusion. C. superheat of vaporization D. superheat of fusion - Answer A. latent heat of vaporization 3. Heat added to the refrigerant in a vapor state after t...

DAT Test Bank Questions with Answers 100% correct | 2024 update DAT Test Bank Questions with Answers 100% correct | 2024 update Contains marking scheme Survey of Natural Sciences Which of the following viral genomes can be directly translated into protein by the host cell’s translation machinery? Double-stranded DNA Single-stranded DNA, coding (+) strand Double-stranded RNA Single-stranded RNA, coding (+) strand Single-stranded RNA, template (–) strand ...

What is the issue of using a conical flask, water bath and bung to collect gas? How can this be modified? - correct answer 1. some gas escapes before the bung is replaced. Instead, put the solid in a specimen tube in a conical flask and mix together 2. some CO2 dissolves in the water so is not collected. A gas syringe would be better 3. bung displaces the same volume of air as itself into the cylinder How would you prepare a standard solution? What appa...

DAT Test Bank Questions with Answers 100% correct | 2024 update DAT Test Bank Questions with Answers 100% correct | 2024 update Contains marking scheme Survey of Natural Sciences Which of the following viral genomes can be directly translated into protein by the host cell’s translation machinery? Double-stranded DNA Single-stranded DNA, coding (+) strand Double-stranded RNA Single-stranded RNA, coding (+) strand Single-stranded RNA, template (–) strand ...

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DAT Test Bank Questions with Answers 100% correct | 2024 update DAT Test Bank Questions with Answers 100% correct | 2024 update Contains marking scheme Survey of Natural Sciences Which of the following viral genomes can be directly translated into protein by the host cell’s translation machinery? Double-stranded DNA Single-stranded DNA, coding (+) strand Double-stranded RNA Single-stranded RNA, coding (+) strand Single-stranded RNA, template (–) strand ...

1 FALL 2021 CAPSTONE AIC EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ What would be the most appropriate means for the contractor to communicate to the project owner an unforeseen condition not identified in the soils report? Correct Answer: -Write a formal business letter When is the best time to distribute the working agenda to the participants of a meeting? Correct Answer: -About one day prior to the meeting The contractor has tasked his project engineer with...

Which of the following is not the product of incomplete combustion: - ANSWER-Oxides of nitrogen An oil trap is required at the base of the discharge line of the vertical riser is _____ or above - ANSWER-8 feet A diode allows current to flow in one direction: - ANSWER-True 1 Watt = _____ Btu - ANSWER-3.41 Current in a closed circuit is limited by which of the following: - ANSWER-resistance An oil separator is located in the _____: - ANSWER-Discharge line ______ is the heat that ...