Why do metals feel cold even when they are at room temperature?

Q: How does the specific heat of water compare with that of various metals? Why?

A: Specific heat can be defined as the amount of heat that is added or release from any substance to…

Q: atoms ever in contact

A:

Q: cool

A: Aluminium has higher specific heat capacity which means you require more heat energy to heat up a…

Q: Many dry cereals are fortified with iron, which is added to the cereal in the form of small iron…

A: The iron particles are separated from the cereal with the help of magnets. we need to grind and…

Q: what is a reasonable value for the charge of a molecule after several electrons are stripped from…

A:

Q: What is the physical law for obtaining the law of exchange by addition?

A: Associative law of addition a + (b+ c) = (a + b) + c

Q: Why does the ability of a metal to conduct electricity decrease with increasing temperature?

A: SOlution: how does the ability of a metal to conduct electricity affect with increasing temperature.

Q: What factors affect the melting point of a metal?

A: The factor the affect the melting point of a metal is the attractive force between the molecules…

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: A bimetallic strip is made up of welded togelher O Two different metals that expand and contract…

A: A bimetallic strip, We are asked about what kind of metals are used to make a bimetallic strip.

Q: If no molecule in a body can escape, would body have any odor?

A: The odour is due to molecular diffusion, hence if the molecule could escape, the body will have…

Q: Do you find the idea that you are made of recycled atoms disturbing? Why or why not?

A: We are made of atoms that were formed on other starts and distributed across the universe.

Q: What properties of metal make them conduct heat better than wood?

A: A metal is a good conductor of heat whereas a wood is a bad conductor of heat. Metals have more…

Q: Why does the conductivity of metals decrease with increase in temperature?

A: Decrease in conductivity of metal with the increase in temperature: In metals, there are free…

Q: What physical property of a metal is preferred when making musical instruments? a) Ductile b)…

A: Answer:       Sonorous property.

Q: Two safety pins, identical except that one is latched and one is unlatched, are placed in identical…

A:

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

A:

Q: Graphite has hexagonal crystal lattice which contains four atoms per unit cell at positions of (0 0…

A: GIVEN: The four positions are ( 0 0 0), (1/3 2/3 0), (0 0 1/2) and (2/3 1/3 1/2).

Q: How do you solve for a specific heat of a metal?

A: The amount of heat required to raise the temperature of a body depends on the following factors: On…

Q: The melting point of titanium is 1668°C which is equivalent to .. Kelvin. 1394.85 K 1941.15 K 1668 K…

A:

Q: An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in: a.…

A: Given:  kinetic energy of copper atom

Q: Vhat is the number of moles of atoms in 9.03 x 1024 atom: OA. 4.42. mol O B. 9.03 mol O. 1.51 ol O…

A: Given: The number of atoms is 9.03x1024.

Q: Why is there a need to constantly stir the metal shots during heating?

A:

Q: Can a diamond conduct electricity?

A:

Q: The energy equivalent of  0.5g of a substance is

A:

Q: The cavity within a copper [β = 51 × 10-6 (C°)-1] sphere has a volume of 1.200 × 10-3 m3. Into this…

A: The change in the units volume of material when temperature changes is given by…

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: A tray contains 390g of ice. How much energy will be required to melt it to water? O 36.2 kcal 34.2…

A: 31.2 kcal is correct answer.

Q: .Express (a) the energy required to break one bond in DNA (10-20 J) in eV. (b) the kinetic energy of…

A:

Q: What is the mass of 0.7 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37

A:

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

A:

Q: Name the metal which is liquid at room temperature?

A: In general, all the metals are in solid state at room temperature except mercury.

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

A: A thermopile is basically made with an antimony-bismuth couple.When a temperature difference is…

Q: Consider an alloy of two metals whose thermal conductivities are k1 and k2. Will the thermal…

A:

Q: How does a molecule differ from an atom?

A: Atom is the smallest unit of matter. It is the smallest part an element can divide into. Also, atom…

Q: k Is Force equals mass times acceleration All O Newton's second law Newton's laws of motion O…

A:

Q: A bimetallic strip is made up of welded together. a. two different metals thatexpand and contract…

A: The strips consist of the strips of different metals which expands at a different rate as they are…

Q: The tendency for a material to oppose the flow of electrons, changing electrical energy into heat…

A: Resistance arise when free electron collied with atoms or molecules.if more the collision occurred…

Q: Pure water is an insulator whereas salty water is a conductor. Why?

A: It is a true statement that pure water is an insulator whereas the salty water is a conductor.

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…