Chem 1111 Study guides, Class notes & Summaries

Calorimetry - Answer-science of measuring heat Calculate amount of energy released using E=mc(dT) - Answer-Energy released= (mass of water heated)x(specific heat of water)(temp. change) specific heat=1.0 cal/gC 1 Cal=1000 cal What is meant by small calorie "c" and food calories "C"? - Answer-"c" is a scientific calorie which is the energy required to rise the temp of 1 gram of water by 1C "C" is 1000 scientific calories-Food Calories When walking, an average person burns 0.453 Food...

solids Correct Answer-particles are close and organized, fixed shape liquids Correct Answer-particles are close but unorganized, varying shape gas Correct Answer-particles are far apart and unorganized, varying shape physical changes Correct Answer-done alone. ex: melting point, density, electrical conductivity (ice berg) chemical changes Correct Answer-interaction with another substance. ex: chemical reaction/change, flammability, solubility mass unit Correct Answer-kg time un...

CHEM 111 Final Exam Questions with Complete Solutions.

What is the wavelength in meters of green light with a frequency of 5.75 × 1014 s−1? (a) 5.22 × 10−7 m (b) 1.92 × 106 m (c) 1.92 × 108 m (d) 1.73 × 1023 m - Answer-(a) 5.22 × 10−7 m What is the energy of a photon having a wavelength of 900 nm? (a) 3.33 × 1014 J (b) 2.21 × 10−19 J (c) 1.79 × 10−31 J (d) 5.96 × 10−40 J - Answer-(b) 2.21 × 10−19 J Which light has the highest energy? (a) 700 nm, red light (b) 575 nm, yellow light (c) 475 nm, blue light (d) 400 ...

Which of the following pieces of equipment is not used in the experiment to measure the relationship between pressure and volume? Correct Answer-an Erlenmeyer flask Which of the following statements is/are true? 1.Gases are easily compressed compared to other states of matter. 2.Gases expand to fill the volume of their container. 3.All gases that exist in real life are considered to be ideal gases. 4.Molecules of different gases readily mix with one another. Correct Answer-1,2, and 4 I...

sig fig zeros Correct Answer-1. zeros at beginning NOT signif 2. zeros between ARE SIGNIF 3. zeros at end of number are signif if number contains a decimal point 3.489 x (5.67-2.3) Correct Answer-3.489 x 3.(3)7 11.75793 12 matter Correct Answer-composed of mass and must occupy space scales of matter Correct Answer-macroscopic, microscopic, particulate. scientists think on a particulate scale, observe macroscopically states of matter Correct Answer-1. change from solid to liquid t...

Chem 111 Final Questions with Complete Solutions.

Two characteristics of Matter Correct Answer-Mass and Volume Scales of Matter Correct Answer-1. Macroscopic 2. Microscopic 3. Particulate Physical Property Correct Answer-When an atom or molecule doesn't change -color, taste, melting and boiling point, odor, density Chemical Property Correct Answer-When the atom or molecules react and the composition of matter changes -flammability, acidity, oxidation, corrosiveness Dalton's Atomic Theory Correct Answer-1. each element is made...

Chem 111 Lab Questions with Complete Solutions.

Chem 111 Study Guide Questions With Complete Solutions.