Why we use a number of antimony-bismuth couple in a thermopile?

Q: . Which among the plots shown represents the IV curve of an ohmic material? (a) (b) (c) (d) I L

A: Any electrical conducting material that obeys Ohm's law, where the current through the device is…

Q: Consider the dissolution of CaCI2: CaCl2(s) Ca (aq) + 2CI (aq) AH = -81.5 kJ/mol A 15.0-g sample of…

A: Given compound is --> CaCl2  Amount of substance = 135 grams Amount of compound = 15 grams Atomic…

Q: rive the equation H= U + PV

A: Enthalpy, H  : It is a property of a thermodynamic system, which is defined as the sum of internal…

Q: Which of the following represents the characteristic curve of a NON-ohmic material? Choices:  A…

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Q: Q. 3 What are the common uses of ionic liquids?

A: An ionic liquid is a salt in the liquid state.  Now let's see the use of ionic liquids

Q: Estimate the time needed for a glycine molecule (see Table 13 – 4 in the textbook) to diffuse a…

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Q: Just wanted to ask why you used Cosine Law?

A: In given question dot product  (1) dot product leads → cosine law (2) cross product leads →sine…

Q: A substance that heats up relatively quickly has a O low specific heat. many strong molecular…

A:

Q: Explain how at high pressures the conversion of graphite to diamond can increase the total entropy…

A: Entropy can be understood as the randomness or disorder in the system. For an irreversible process,…

Q: What is the use of the indicator diagram or PV diagram?

A: Indicator diagram / PV diagramIndicator diagram or PV diagram is a curve showing the variation of…

Q: A thermometer is check at the normal freezing point of tin (505.118k) and found to read 512.2k. At…

A: Let’s assume that at 742.5 K of the true reading, the thermometer reading gives ‘x’ K.

Q: Suppose that the root-mean-square velocity v-ms of water molecules (molecular mass is equal to 18.0…

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Q: Diffusion always drives molecules from higher concentration to lower concentration. Oa. True O b.…

A: The kinetic energy of the molecules results in random motion, causing diffusion. In this random…

Q: Why are models in science used to respresent complex processes

A: Models can helpful in visualising , picture in mind, something that is difficult to see or…

Q: Analv ze the following statements and determine if it is correct or wrong. 1. SiCl, is a nonpolar…

A: To determine: Whether the given statements are correct or wrong.

Q: Tents are coated with thin layer of aluminium hydroxide. Why?

A: Tents are coated with a thin layer of aluminium hydroxide because aluminium hydroxide is insoluble…

Q: A technique that uses a moving liquid phase and a stationary solid phase to separate mixtures is…

A: The technique used to separate on the basis of polarity difference is known as chromatography.

Q: Gold occurs in seawater at an average concentration of 1.1102 ppb. How many liters of seawater…

A: Given- Average concentration of the gold in seawater =1.1×10-2 ppb Density of seawater =1.025 g/mL 1…

Q: The specific latent heat of vaporization of a particular liquid is 2.0 x 10 Jkg, its relative…

A: Given : Specific latent heat of vaporization, LVH  =  2.0x105J/Kg Relative molecular mass  =  30…

Q: At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres? Use the…

A:

Q: What are the advantages and disadvantages of using a solar cooker? Are there places where solar…

A: Solar cooker heats and cook food using the solar energy. It is a renewable energy source. It's yours…

Q: The Thermistor advantages .A Very sensitivity .B Small mass .C Changes rapidly with temperature .D…

A:

Q: A two-component mixture is made up of components A and B with nA=0.11ng. If a small change in…

A: In the given question, We have to calculate the value of change μB.

Q: Which is NOT an element that must be present for a fire to occur? a. heat c. hydrogen b. fuel d.…

A:

Q: Methane, CH4, is the simplest hydrocarbon molecule and in its natural state is a gaseous substance.…

A: Mass of methane = 64 g  Molecular mass of methane = (12 +4) = 16 g  Number of moles of methane =…

Q: When can you say that a chemical system is a substance or a mixture?

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Q: Why are the temperature and pressure dependent properties in the saturated mixture region?

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Q: #13 Alternative Energy measures Noting that one Mole contains Avogadro's number (6.02 × 1023) of…

A: Given: 1 mole=6.02x1023. Energy, E=1 kcal/mol. We need to calculate this energy into joule.

Q: You are designing a new product that requires the use of a stable nonreactive gas. Which gas would…

A: SOlution: TO suggest the gas, for a new product that requires the use of a stable nonreactive gas.

Q: Find the density of the air at 0°C and 1.013 x 105 Pa. One mole of air may be assumed to be 79%…

A: Given data: The percentage composition of nitrogen in in one mole of air, %nitrogen=79%. The…

Q: What is the value of Avogadro’s number?

A: The number of particles in one mole is called Avogadro's number or Avogadro's constant. The unit of…

Q: What do you mean by Bimetallic strip thermometer.

A: A bimetallic strip thermometer is a thermometer consisting of two strips of different metals…

Q: Timber is an anisotropic material as it?

A: solution as

Q: The resistive element method cannot be used to vaporize two materials of similar melting points. * O…

A: First of all we have to know the what is resistive element. Resistive element is the element in…

Q: Which has gained more entropy?

A: Please see the attached image for solution

Q: Give a reason why soda drinks should be in plastic bottles rather than in aluminum cans?

A: A typical soda drink may contain acids like citric acid which can react with metallic containers and…

Q: Van der Waals forces can hold inert gas atoms together to form solids at low temperature, but they…

A: Firstly we will discuss the nature of Van der Waals forces, These forces are very weak and short…

Q: How is the product solution used to determine the variation of temperature with time and position in…

A: Temperature is a physical quantity that is used to indicate the hotness contained in a body. The…

Q: A technique that separates mixtures on the basis of theirdistribution between a stationary liquid…

A: Answer Chromatography is a laboratory technique for the separation of a mixture. The mixture is…