Measuring enthalpy change - Study guides, Revision notes & Summaries

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...

General Chemistry ACS EXAM Review 168 Questions with Verified Answers Rutherford's Gold Foil Experiment - CORRECT ANSWER proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons nucleus - CORRECT ANSWER contains all the positive charge and nearly all the mass of the atom James Chadwick - CORRECT ANSWER discovered the neutron cathode rays - CORRECT ANSWER move from negative electrode to positive electrode (like electrons in a voltaic cell) Thompson...

Pearson BTEC Level 3 National Extended Certificate in Applied Science Unit 2: Practical Scientific Procedures and Techniques Learning Aim B: Undertake calorimetry to study cooling curves Contents Table Introduction……………………………………………………………….3 Apparatus List…………………………………………………………….4 Risk Assessment………………………………………………………….4 Procedure…………………...

General Science: Content Knowledge 5435 Practice Questions and Answers | 100% Pass Which of the following guidelines should be used when collecting data during an experiment? - Answer️️ -Vary only one factor at a time when studying how a system responds. Which of the following is equivalent to 1 × 10*-3 g? - Answer️️ -1 milligram Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? - Answer️️ -It provides an e...

First Semester Study Guide AP Chem Buck Exam 196 Questions with Verified Answers Salts containing which of the following ions are generally insoluble in cold water? a. nitrate b. acetate c. phosphate d. potassium e. ammonium - CORRECT ANSWER C. Phosphate Which of the following changes alone would cause a decrease in the value of Keq for the reaction represented above? a. Decreasing the volume of the reaction vessel b. Adding a catalyst c. Increasing the volume of the reacti...

Air Conditioning Certification Exam (Exam Code A-02)|verified Exam Question And Correct Answers All Graded A+|Guaranteed Success|Latest Update Heat which causes a change in temperature of a substance is called; - ANSWER-sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - ANSWER-latent heat. Heat which is added to a vapor after the change of state occurs is called; - ANSWER-superheat. Heat can travel by; - ANSWER-co...

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...

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AQA A-Level Chemistry (new spec) 1.1 Atomic Structure (2022/2023) Already Passed What are nucleons? Nucleons are protons and neutrons in the nucleus. What is the position of protons? Nucleus What is the relative mass of a proton 1 What is the relative charge of a proton? +1 What is the position of neutrons? Nucleus What is the relative mass of a neutron? 1 What is the relative charge of a neutron? 0 What is the position of electrons? Orbitals What is the relative mass of an electron? 1/1...

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 ...