Chem103 exam questions - Study guides, Class notes & Summaries

tera - T 10^12 giga - G 10^9 mega - M 10^6 kilo - k 10^3 deci - d 10^-1 centi - c 10^-2 milli - m 10^-3

Kerosene (d=0.820 g/mL) is a hydrophobic liquid. If kerosene and water are placed into the same container... - Answer the kerosene will form a layer on top of the water Which of the following is a measurement of how well a calculated curve fits plotted data? - Answer R-Squared value Ernest Rutherford discovered a nucleus in atoms. What experimental evidence did he have? - Answer most of the alpha particles passed directly through the foil because gold atoms were mainly made of empty space ...

accuracy - ANSWER-closeness of a measurement to its true value percision - ANSWER-how closely repeated measurements agree with each other M - ANSWER-mega 10^6 k - ANSWER-kilo 10^3 c - ANSWER-centi 10^-2 m - ANSWER-milli 10^-3 μ - ANSWER-micro 10^-6 n - ANSWER-nano 10^-9 Å - ANSWER-Angstrom 10^-10 p - ANSWER-pico 10^-12 density - ANSWER-mass/volume extensive property - ANSWER-dependent on the amount of matter present intensive property - ANSWER-does not depen...

What is the device shown below? - ANSWER-The device is used to carry away dangerous gases in a hood What is the flask with the line on its neck used for accurate volume measuring? - ANSWER-volumetric flask Why is glass so often used as a material for lab containers? - ANSWER-Because it is not reactive with most lab chemicals What is the metal device used to hold hot containers - ANSWER-tongs What is the device used to smother small fires? - ANSWER-a fire blanket is used to smother sm...

Exam (elaborations) M2: Exam answered (CHEM103) 100% correct Due No due date Points 100 Questions 10 Time Limit 120 Minutes Requires Respondus LockDown Browser Instructions Please read the following before beginning the exam: You must show your work for calculations or give an explanation for short answer questions in order to receive credit. You may only use the methods and explanations provided by this course for your answers. The use of a method or explanation that was not taught ...

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