Why are particles measuring at 300nm ~ 1000nm not classified as a Nanomaterial? Should they be considered as Nanomaterials or not? Explain the reason for the rigid classification and the properties exclusive to the “Nanomaterial” region.

Q: Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 75.81 g/mol and…

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Q: What is the difference between a homogeneous and a het-erogeneous mixture?

A: Mixture is the physical combination of two or more than two different substances.

Q: 4. How sizing down to Nano affect material properties?

A: Since  substances at the nanoscale level have a greater surface-to-volume ratio, which causes them…

Q: a. From the given data, calculate the volume of the irregularly – solid and      determine the…

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Q: (1) Diamond and graphite are two minerals with identical chemical compositions, pure carbon (C).…

A: 1. Given that, diamond and graphite are two materials with identical chemical compositions and pure…

Q: 4. What is a characteristic property of a pure substance? Is the boiling point of a substance a…

A: Pure substances are substances that are made up of only one kind of particles and has a fixed or…

Q: 8. If matter is uniform throughout and cannot be separated into other substances by physical…

A: Matter is divided into two categories. 1. Homogenous  - The matter is uniform throughout  2.…

Q: What is the approximate difference between the temperature of a boiling liquid in a conical vial and…

A: The boiling point of a liquid is furnished as the temperature at which the pressure of the vapor of…

Q: Use the References to access important values if needed for A sample of volume 244 cm has a mass of…

A: Mass = 1.04 Kg = 1040 g Volume = 244 cm3 Density = ?

Q: Solids and liquids could be consists of the same materials and yet have different properties. Just…

A: Solid and Liquid are the two phases of a same substance. A substance exists as a solid in a…

Q: Explain the following briefly a.) Why is ‘‘distillation’’ a purifying technique? Cite evidences

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Q: a. ОН 1. MsCI, pyridine 1. PBR3 2. MeSH 2. MeSH, DME 1. Liº, THF Br 2. A 3. H30* С. Br KOH, H20 Br…

A: Various stereoisomers react to produce different stereoisomers of the product in a stereospecific…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: a) sample size (n)  = 106 b) sample size when 80% of adult have heard about the brand (n)  = 68

Q: 03) Como diferenciar mediante espectroscopia de Infravermelho os seguintes isômeros? NH2 b) a) c) d)…

A: All the given pair of compounds have some structural difference which will be clearly visible in the…

Q: Determine the density of BCC iron, which has a lattice parameter of 0.2866nm (Fe= 56 g/mol). Also…

A: Density of a substance is given by, Density =z×MNa×a3 where z is the number of atoms, M is the molar…

Q: 2. Research on recent innovations or discoveries in the nanoengineering world. Discuss only the…

A: Some of the recent developments in the field of nanotechnology are: Nano sensors that detect heart…

Q: What volume of 95.0% alcohol by weight (density: 0.809g/cm^3) must be used to prepare150 cm^3 of…

A: Given, Density of 95.0% alcohol by weight = 0.809 g/cm3 Density of 30.0% alcohol by weight =…

Q: Why are the particles in a solid assumed to be moving even though we cannot see them? O The kinetic…

A: Kinetic theory of gases

Q: What are the examples of nanostructures?

A: A nanostructure is an object that has at least one dimension equal to or smaller than 100…

Q: Which of the following would be described as particles in constant random motion? A. solid B. plasma…

A: Liquid has particles in constant random motion.

Q: If a soft-drink bottle whose volume is 2.00 L is completely filled with water and then frozen to -10…

A: Density of water at 25°C = 0.997 g/cm3  Density of ice at  -10°C = 0.917 g/cm3  Volume of water =…

Q: es of 25 A diameter, find: a) number of surface atoms Ns. b) number of volume atoms Nv. (or bulk…

A: Given as, Diameter=2.5nm,Radius=1.25nm,volume=43 πr3 =43 ×3.14×1.253 =8.18nm3

Q: DU SH MOOg piHos e se Sues 120 90 60 30 Time (minutes) What is the melting point of this substance?…

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Q: 2. Explain the difference between (a) nanoscience and nanotechnology (b) nanomaterial and…

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

Q: A solid white substance A is heated strongly in the absence of air. It decomposes to form a new…

A: Given: Solid white substances is heated in the absence of ar to produce a new white substance B and…

Q: Nanomaterials provide various applications that can benefit humans. Are there possible disadvantages…

A: As we know that Nanomaterials are very useful for humans , these are useful in different forms as a…

Q: Aluminum is a useful metal because it can be rolled into thin sheets and bend into different shapes.…

A: All the chemical elements can be broadly divided into metals, metalloids, and nonmetals according to…

Q: What is the difference between a heterogeneous and a homogeneous material?

A: Homogeneous and heterogeneous material are two classes of materials which differ in their…

Q: Despite the radical increase in the use of plastics over the last few decades, the mass of plastics…

A: With the increasing population, the use of plastics has been increased because of which there were…

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: -2.421 x 108 -2421 x 101 -2421 x 103 1458 x 1016 -1458 x 10

A: Given,  Mass defect (□m ) = -0.1620 amu (1 amu = 1.67 ×10-27 Kg) □m = -0.1620 × 1.67 ×10-27 =…

Q: Which of the following would be a homogeneous mixture?  A) graphite B) milk C) brass D)…

A: Which of the following would be a homogeneous mixture? The answer is given below with explanation.

Q: Give an example of nanoparticles found in animals and discuss it briefly.

A: Nanoparticles are minute particles ranging from 1 to 100 nanometers in size. Nanoparticles exhibit…

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…

Q: An example of a semiconductor is ZnS with a particle diameter of 1.8 nanometers. Convert this value…

A: Applying basics relationship between nm to dm and nm to inches.

Q: Examine the current state of research on the safety of products contain- ing nanoparticles.

A: Nanoparticles are now being used in the manufacture of scratchproof eyeglasses, crack- resistant…

Q: What states of matter present in t2-t3

A: Basically there are three states of matter present. They are: Solids Liquids Gases Solids are…

Q: vizualize the connection for the description of motions in the sections and give answer in the blank

A: 1. Scientist who proposed 2. Model name a.) John Dalton     Dalton Atomic Theory b.) Ernest…

Q: How can you differentiate between natural and engineered nanoparticles in the environment?

A: The nanoparticles which occur in nature are called Natural Nano particles. These are generally found…

Q: A scientist has a beaker containing 20 mL of a solution containing 20% acid. To dilute the acid, she…

A: a.) Given: The amount of water added is 7 ml. Introduction: The concentration, C(n) of acid in the…

Q: 19. The kinetic molecular theory assumes that particles are not attracted to each other. Which…

A: KTG theory( Kinetic theory of gases) The gas particles have no forces of attraction. The gas…

Q: The room temperature phase of lithium is a liquid. O True False

A: Select true/ false: The room temperature phase of lithium is liquid

Q: ive atleast five examples of matter found in nature and at home. Distinguish these matters as either…

A: Matter is anything that can occupy space and has mass. It can be pure substance or mixture. Out of…

Q: 4 For Ag atoms forming a nanoparticles of 25 A diameter, find: a) number of surface atoms Ns. b)…

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Q: To identify a liquid substance, a student determined itsdensity. Using a graduated cylinder, she…

A: Given data contains, Mass of the sample is 38.5g. Volume of sample is 45 mL. Density of propyl…

Q: A 31.8 g wafer of pure gold initially at 69.8 °C is submerged into 63.7 g of water at 26.9 °C in an…

A: According to the principle of calorimetry principle, heat loss from one object is equivalent to heat…

Q: a) Kristina wanted to provide evidence that matter is made of particles, so she set up a glass tube…

A: The experiment setup given is as shown below.

Q: gravity filtration

A: Gravity filtration – Gravity filtration is a method in which most of the work is dependent on…