ABORATORY 14 DETERMINING THE PROPORTIONALITY CONST 37. Convert pressur- LABORATORY 14 DETERMINING THE PROPORTIONALITY CONSTANT, R, IN THE IDEAL GAS EQUATION PARTNER SECTION DATE NAME REVIEW PROBLEMS (11) After blowing up a balloon, a student was curious what the partial pressure of each gas was in the balloon. A barometer reading indicated the total pressure was 748 mmHg. Given the molar composition of dry air is 78.08% N2, 20.95% O2,0.93% Ar and 0.04% CO,, what is the partial pressure of each gas in the balloon? 1. it 2. The compression and expansion of gases form the basis of how air is cooled by air conditioners. Suppose 1.55 L of an ideal gas under 6.38 atm of pressure at 20.5°C is expanded to 7.95 L at 1.00 atm. What is the new temperature? Answer: 236 K or -37.1°C

Q: 2. A solution of salt in water is a compound. heterogeneous mixture. a. b. homogeneous mixture. с.…

A: Homogeneous mixture : It is a mixture in which composition is uniform throughout the mixture.

Q: Can a chemical change result's in no new substances。?

A: Physical change: Physical change involves one phase to another phase without breaking or making the…

Q: List the names of the various changes of state for a pure substance?

A: Pure substances in chemistry are those that consist of only one kind of particles. It can be further…

Q: Give the description of accompanying changes of: A. Crushing a can B. Shredding paper C. Chopping…

A: Change in physical properties include change in state of matter, shape, size, volume, length and…

Q: Three liquid substances of the same mass and have an S.G. of 1.50, 0.835 and 1.2 were being mixed to…

A: Specific gravity of liquid 1 = 1.50 Specific gravity of liquid 2 = 0.835 Specific gravity of liquid…

Q: Our actions cause change. Can we ever be certain of the effects of our actions?

A:

Q: Which of the following is a pure substance existing as different phases in a heterogeneous system?…

A: The correct option is as follows:

Q: 3. The normal melting point of ice (solid water) is 0.0°C. When the solid ice melts into liquid…

A: Ice, water and water vapor are the three different states of water. By changing the temperature, one…

Q: Define substance and give two examples of things that are substances.

A: The matters are defined as a substance, mixture, element, or compound. Each category of matter…

Q: Describing the relationship between the melting time for an ice cube and amount of salt sprinkled on…

A: The freezing point depression is the one that results in lowering of freezing point of the pure…

Q: How do you know a physical change has occurred when evaporating water produces gaseous water? A A…

A: Physical change : Here, no permanent change occurs. This means no new compound is generated. Here,…

Q: Compare mixtures and substances.

A: Given terms,  Mixtures and substances.

Q: Describe how a homogeneous mixture differs from a heterogeneous mixture.

A: The homogenous mixture is a mixture which has only one phase(means of homo) is present or there can…

Q: Can we use the distillation setup as carried out in the experiment for a mixture containing two…

A: Distillation is a separation process which based on difference of boiling point and relative…

Q: But you didn't make use of the data given. We're supposed to use the data to find the answer.

A: Heat of combustion: It is defined as the amount of heat released when one mole of a given compound…

Q: Sodium reacts with Chlorine to produce Sodium Chloride (table salt). The reactant(s) are* 1 pc O…

A:

Q: Why do the ability to separate and recover pure substances from mixtures is extremely important in…

A: Purity is a necessity of scientific research.

Q: Please explain if the following situation describes a chemical or physical change. Then, nln ploase…

A: A physical change involves only change of physical forms. It doesn't involve any changes in…

Q: Distinguish between each of the following and give example of each case A. Pure substance and…

A: Pure substance are in a category of one kind of particles and it has a fixed structure and of same…

Q: What type of pure substance can be decomposed chemically into other pure substances? O compound O…

A: Pure substances are defined as substances that include only one type of particle and have an uniform…

Q: Is a hydrate a mixture or pure substance? Explain

A: Given :  Type of compound is hydrate. To determine: whether hydrate is a mixture or pure substance.

Q: What is an element? A. Oxygen and nitrogen joined together. B. A piece of pure nickel C. A water…

A: The question is based on the concepts of general chemistry. it talks about elements which is purest…

Q: Physical constants The constants for H₂O are shown here: • Specific heat of ice: Sice = 2.09 J/(g.…

A: Part A: To convert the ice at -18oC to water at 25oC, we need to supply the heat energy for the the…

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A: Chlorine is the main chemical which is used in swimming pools for sterilizing the water and  keep it…

Q: Which is the best example of a pure substance: O A. elements B. compounds C. pure water D. carbon…

A: Introduction: Pure substance is a homologous material which contains particles ( atoms or molecules)…

Q: What property of matter is most responsible for the fact that sound travels at different speeds…

A: In science, the matter is the basic unit of every substance. Anything that has mass and occupies…

Q: What are the two fundamental capacities of an object?

A: Capacity is the ability of an object to hold the amount of liquid when it's full or half.  It…

Q: Classify the following as either pure substances or mixtures. If it is a pure substance, state…

A: In the above problem we have to determine a substance is pure or mixture.homogeneous mixture or…

Q: why are elements and compounds both pure substances?

A: The formation of compounds due to a combination of elements is governed using certain laws. These…

Q: Q.3. Observe the following pictures and answer the questions. 1. Which of the picture above are…

A: We need to determine which of these changes are temporary and which are permanent.

Q: 1. Are compounds and mixtures the same or different? Why? 2. If you had a substance and didn't know…

A: Hi, the answers to both the questions are given in the following steps.

Q: Why Are Units So Important?

A: Units: These are expressions of parameters that are used to express any measured parameter or…

Q: Which of the following describes what occurs as a liquid becomes a solid? A physical change occurs;…

A: Interpretation: To describe what change occurs when a liquid becomes solid.

Q: An example of a pure substance is an element a) a compound b) c) H,O carbon dioxide d) all of these…

A: A chemical substance is a form of matter having constant chemical composition and characteristic…

Q: Compressible is a classification of matter, where its molecules are existing separately from each…

A: A solid cannot be compressed much because its particles are already very closely packed and there…

Q: Which of the following is a physical change? Choose all that apply. O a. rusting of a metal can Ob.…

A: Choose which are physical change?

Q: A quantity of substance that can be seen would be considered the A level.

A: The complete sentence is: "A quantity of substance that can be seen would be considered the…