4. *Strictly speaking, why is it incorrect to speak of a melting point?

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Q: What is a solid dispersed in either a solid or liquid?

A: Solid dispersed in either a solid or liquid is called:

Q: 5. Na + MgCl2

A: Determine the product and type of reaction--

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A: The reaction involved is: C2H5Br + NaOH → C2H5OH

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Q: Why do we need to remove impurities from compounds before we use them?

A: The importance of removing impurities from compounds is given below,

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A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: We use the . difference to separate a liquid mixture by distillation. O Melting point Flash point…

A: The temperature at which the solid substance is converted to liquid substance is known as melting…

Q: Describe a patterns/trends in a PHYSICAL property as we move down group 1 and group 7? Group 1 Group…

A: To find: Physical property down the group 1 and group 7

Q: Is a change in phase a physical change or a chemical change? Explain.

A: A physical change is a reversible change whereas chemical changes are generally irreversible. No new…

Q: A heating curve for water has been provided below. F A G D C Time Based on this graph, answer the…

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Q: K2S 7.69 x 1026 H2S04 1.29 C6H14 11.84 HClo3 2.45 x 1026

A: As you not specified so I am giving answer of first 3 questions  Use these formulas  Mole=mass/molar…

Q: What branch of chemistry would study the amount of mercury present in a soil sample? Explain.

A: Mercury  is  an  element  present  in periodic table.It has  atomic  number  of 80  and has…

Q: 1.) PBr3 2.) NaCN 3.) MgBr OH 4.) H*, H20 a) b.) d) ZI

A: Detailed mechanism is given below:

Q: List three examples of substances. Explain why each is a substance.

A: List three examples of substances. Explain why each is a substance.

Q: The attractive or repulsive forces between particles that are caused by their electric charges.

A: The attractive or repulsive forces between particles that are caused by their electric charges is…

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A:

Q: 1.12 The photo below shows a picture of an agate stone. Jack,who picked up the stone on the Lake…

A: Pure chemical substances that are made up of two or more chemical elements are known as chemical…

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A:

Q: A blue crystal is added to an alcohol solution, but does not dissolve in the alcohol. How would you…

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A: Analytical chemistry deals with the analysis of different substances. In the process firstly, the…

Q: What are the names of the fundamental laws which explain the properties of massand define one of…

A: Answer -  The names of the fundamental laws which explain the properties of mass - 1.The law of the…

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A:

Q: What do you understand by the term 'homogenous mixture'?

A: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. All…

Q: Explain what happens to the density of the water when it changes from liquid to solid. What is the…

A: The density of water decreases when it changes from liquid to solid.

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A: It's a multiple question type. As per the guidelines of Bartleby, we are supposed to solve only 3…

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Q: is distilled water pure substance?

A: Distillation is a purification technique. In this process each compound from the mixture get…

Q: How many grams of NaCl would you need to add to 3.0 L of water to make 55 mM NaCl?

A: molarity is defined as no of moles of solute devided by volume of solution in liter

Q: Liquid silver's chemical name is: a. Ag(only) b. Si(liquid) c. Ag (liquid) d. Hg(liquid)

A: Silver is a chemical component with the symbol Ag (f and nuclear number 47.

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A: Volume and density of the solid determined in cm3 and g/cm3 unit respectively.

Q: Largest radius K+ Ca2+ p3- S2- CI- Smallest radius

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Q: which is an example of a mixture

A: Mixtures are the combination of two or more substances and they are not chemically combined.

Q: H9SO4. H,SO4(aq)

A:

Q: Testing of a sample of matter shows that it has a single melting point of 1,453°C and a single…

A: The melting point of sample matter is = 1453oC ( single melting point and value is too high) The…

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Q: BaCl2٠2H2O What is the mass salt?  What is the mass water?  What is the mass percent?

A: Ans

Q: Why is arrangement of the constituent atoms or molecules are important in determining the properties…

A: The arrangement of the atoms or molecules is more important in determining the properties.

Q: Calculate the Molar mass of a volatile liquid (g/mol) from the following data:- Mass of dry flask,…

A: Mass of dry flask = 142.722g Mass of vapor = 143.801 Volume = 1.127 liter Temperature of degree…

Q: Discuss about  method of distillation

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A: Answer

Q: e. What are the properties of matter that corresponds to the molecular behavior?

A: Matter is anything that occupies space and has mass. All physical objects are composed of matter,…

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A: Given:

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A:

Q: Using a few words and a simple diagram, explain what is happening when a molecular compound boils…

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Q: H2SO4 + Al(OH), → H20 + Al2(SO4)3

A: