2. Substances have a definite and unchanging chemical composition. Examples of substances are salt, water, baking soda, carbon dioxide and oxygen. They are substances because their composition is O A. not balance wherever you find them O B. not the same wherever you find them O C. balance wherever you find them D. the same wherever you find them

2. Substances have a definite and unchanging chemical composition. Examples of substances are salt, water, baking soda, carbon dioxide and oxygen. They are substances because their composition is O A. not balance wherever you find them O B. not the same wherever you find them O C. balance wherever you find them D. the same wherever you find them

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter13: Temperature, Kinetic Theory, And The Gas Laws

Section: Chapter Questions

Problem 30PE: (a) What is me 1imlume (in km3) of Avogadro’s number of sand grains if each grain is a cube and has...

See similar textbooks

Similar questions

1. a) Define enthalpy b) Define air fuel ratio. c) State the meaning of 100 percent theoretical air. d) Define thermal conduction. e) Define Nusselt number.
(a) What is me 1imlume (in km3) of Avogadro’s number of sand grains if each grain is a cube and has sides mat are 1.0 mm long? (b) How many kilometers of beaches in length would this cover it me beach averages 100 m in width and 10.0 m in depth? Neglect air spaces between grains.
1. Find the mass of 1m3 of pure oxygen under std. atmospheric condition having a temperature of 25°C. EXPLAIN THE SOLUTION (STEP BY STEP, AVOID SHORTCUT) AND EXPLAIN WHY THE FORMULA WAS USED IN WORDS. DRAW A FIGURE THAT SUPPORT THE PROBLEM.
A new substance is not created when a mixture is created and the changes can be reversed. This makes creating a mixture a(n): A. Chemical change B. Physical change C. Atomic change D. Elemental change Copyright: Achievement First. Uniess otherw se -oted, all of the contert r ths resc International 4.0 (CC BY) license ces bcersed under a Creatrve Commons Attribution
6. If I have 0.275 moles of gas at a temperature of 75K and a pressure of 1.75 atmospheres, what is the volume of the gas? a. 0.4587L b. 0.0982L c. 0.0567L d. 0.9676L 7. If I hovo
1. When you have a pot of water on the stove, heat is transferred to the water. Describe the behavior of the water molecules and how temperature is affected. Type your answer here:
Enthalpy: Flowing Flui%;. Which of the following is NOT an energy component of a flowing fluid? 5. Non-Flowing 6. Fluid Select one: Select one: a. Internal Energy a. Potential Energy b. Work b. Enthalpy c. heat c. Kinetic Energy d. Entropy d. Internal Energy e. None of the above (all four other choices are incorrect) e. None of the above (all four other choices are incorrect) 7. Turbines are devices used to convert the energy of a flowing fluid to rotational work Select one: True False
1. The hydrophilic nature is the property of substance, when: a - the substance molecules have connections between water molecules and atoms of hydrogen%; b - the liquid moistens the solid body surface; c – the edge angle is within the bounds from T/2 to t; d - the liquid will not moisten the body surface; e - the edge angle is less, then a/2.
1. How do molecular mechanical methods calculate the potential energies of molecules?
1.) A vessel contains a mixture of 20 kg of nitrogen and 20 kg of carbon monoxide. The total volume of the vessel is 20?3. Determine the density of the mixture. a.4 kg b.3 kg c.1 kg d.2 kg
7. Bob walked (10 ml/kg/min) for 45 minutes at a steady pace requiring 10 ml/kg/min of O2. He weighs 70kg. How many calories did he expend? a. 203 kcals b. 152.5 kcals C. 165 kcals d. 250 kcals
Which of the folkowing diagrams.correctly shows a molecule of H,SO,? H. B. H. C2021 lluminate EducationM, Inc. hp