What is the best term to describe a chemical reaction that absorbs heat energy?

What is the best term to describe a chemical reaction that absorbs heat energy?
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If a gas absorbs `200J` of heat and expands by `500 cm^(3)` against a constant pressure of `2 xx 10^(5) N m^(-2)`, then the change in internal energy

Description : If a gas absorbs `200J` of heat and expands by `500 cm^(3)` against a constant pressure of `2 xx 10^(5) N m^(-2)`, then the change in internal energy

Last Answer : If a gas absorbs `200J` of heat and expands by `500 cm^(3)` against a constant pressure of `2 xx 10^(5) N ... . `-100 J` C. `+100 J` D. None of these

A system absorbs reversibly 600 J of heat and performs 250 J of work. The increase in the internal energy of system is :-

Description : A system absorbs reversibly 600 J of heat and performs 250 J of work. The increase in the internal energy of system is :-

Last Answer : A system absorbs reversibly 600 J of heat and performs 250 J of work. The increase in the internal energy of system ... J B. 250 J C. 600 J D. 350 J

The temperature of water at the bottom of a large waterfall is higher than that of the water at the top, because – (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater potential energy. (3) the kinetic energy of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top, because - (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Last Answer : (3) the kinetic energy of the falling water is converted into heat. Explanation: The water gains kinetic energy as it falls down and loses its potential energy. Assuming no other losses, part of the kinetic energy gain of water is converted into heat, raising the temperature of water.

If a system absorbs 500 cal of heat at the same time does 400J of work, find the change in internal energy of the system.  a. 1400 J  b. 1700 J  c. 1900 J  d. 1500 J

Description : If a system absorbs 500 cal of heat at the same time does 400J of work, find the change in internal energy of the system.  a. 1400 J  b. 1700 J  c. 1900 J  d. 1500 J

Last Answer : 1700 J

The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater potential energy. (3) the kinetic energy of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Last Answer : the kinetic energy of the falling water is converted into heat.

What is the The chemical part of the dye that absorbs light and produces colour called? -Do You Know?

Description : What is the The chemical part of the dye that absorbs light and produces colour called? -Do You Know?

Last Answer : answer:

What is the The chemical part of the dye that absorbs light and produces colour called?

Description : What is the The chemical part of the dye that absorbs light and produces colour called?

Last Answer : pigment

A black surface absorbs more heat radiations as compared to a white or a reflecting surface under identical conditions. List two solar devices which make use of this property in their design. -Science

Description : A black surface absorbs more heat radiations as compared to a white or a reflecting surface under identical conditions. List two solar devices which make use of this property in their design. -Science

Last Answer : Solar cooker, solar water heater.

What is A device that absorbs and draws heat from a hot object dispersing it into the surroundings is which one of the following?

Description : What is A device that absorbs and draws heat from a hot object dispersing it into the surroundings is which one of the following?

Last Answer : Need answer

What type of surfaces absorbs heat?

Description : What type of surfaces absorbs heat?

Last Answer : Dark, rough, and/or porous surfaces absorb the most heat (ex.Asphalt)

When air passes through silica gel, A. it absorbs water vapour molecules B. latent heat of condensation is released C.dbt of air increases D. all of the mentioned

Description : When air passes through silica gel, A. it absorbs water vapour molecules B. latent heat of condensation is released C.dbt of air increases D. all of the mentioned

Last Answer : ANSWER : D

The water in an open pond remains cool even in hot summer because (a) Of continuous evaporation of water (b) Water radiates heat more rapidly than the atmosphere (c) Water absorbs heat less rapidly than the atmosphere (d) Water absorbs heat more rapidly than the atmosphere

Description : The water in an open pond remains cool even in hot summer because (a) Of continuous evaporation of water (b) Water radiates heat more rapidly than the atmosphere (c) Water absorbs heat less rapidly than the atmosphere (d) Water absorbs heat more rapidly than the atmosphere

Last Answer : Ans:(c)

An iron hammer, lying in the sun, appears much hotter than its wooden handle because (a) iron is at a higher temperature (b) iron is darker than wood (c) iron absorbs more heat (d) iron is a good conductor of heat

Description : An iron hammer, lying in the sun, appears much hotter than its wooden handle because (a) iron is at a higher temperature (b) iron is darker than wood (c) iron absorbs more heat (d) iron is a good conductor of heat

Last Answer : Ans:(d)

The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric temperature (3) the pumping process causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric ... causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Last Answer : (2) the temperature inside the Earth is higher than the atmospheric temperature

Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.

The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric temperature (3) the pumping process causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric ... causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Last Answer : (2) the temperature inside the Earth is higher than the atmospheric temperature

Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

A body absorbs heat most if it is – (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Description : A body absorbs heat most if it is – (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Last Answer : (1) black and rough Explanation: A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. Another property is roughness. Sand is rough and black and so it is a good absorber.

Which surface absorbs all forms of light and heat?

Description : Which surface absorbs all forms of light and heat?

Last Answer : black surface

Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being radiated out completely, resulting in 'heat trap' i.e., global warming (D) All (A), (B) and (C)

Description : Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being ... in 'heat trap' i.e., global warming (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat

Description : Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat 

Last Answer : ANSWER: Z -- ABSORBS HEAT

The water from a hand pump is warm in winter because (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : The temperature inside the earth is higher than the atmospheric temperature

A body absorbs heat most if it is (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Description : A body absorbs heat most if it is (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Last Answer : black and rough

Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects 

Last Answer :  Wool is a bad conductor

A dye absorbs a photon of wavelength `lambda` and re`-` emits the same energy into two phorons of wavelengths `lambda_(1)` and `lambda_(2)` respective

Description : A dye absorbs a photon of wavelength `lambda` and re`-` emits the same energy into two phorons of wavelengths `lambda_(1)` and `lambda_(2)` respective

Last Answer : A dye absorbs a photon of wavelength `lambda` and re`-` emits the same energy into two phorons of wavelengths ` ... 2))/((lambda_(1)+lambda_(2))^(2))`

A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength `50 nm` Assuming that the entire photon energy is taken up by

Description : A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength `50 nm` Assuming that the entire photon energy is taken up by

Last Answer : A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength `50 nm` ... what kinetic energy will the electron be ejected?

What is the name for the structure that absorbs energy from the sun in a cell?

Description : What is the name for the structure that absorbs energy from the sun in a cell?

Last Answer : it is a chloroplast

What is organelle absorbs energy from the sunlight and uses it to make food?

Description : What is organelle absorbs energy from the sunlight and uses it to make food?

Last Answer : Feel Free to Answer

Which substance in chloroplast is a green pigment that absorbs energy for photosystem?

Description : Which substance in chloroplast is a green pigment that absorbs energy for photosystem?

Last Answer : Chlorophyll

What pigment reflects orange yellow and red and absorbs the other colors to provide energy for photosynthesis?

Description : What pigment reflects orange yellow and red and absorbs the other colors to provide energy for photosynthesis?

Last Answer : Carotenoids.

Flywheel absorbs energy during those periods of crank rotation when 1. The twisting moment is greater than the resisting moment 2. The twisting moment is equal to the resisting moment 3. The twisting moment is less than resisting moment 4. The load on engine falls

Description : Flywheel absorbs energy during those periods of crank rotation when 1. The twisting moment is greater than the resisting moment 2. The twisting moment is equal to the resisting moment 3. The twisting moment is less than resisting moment 4. The load on engine falls

Last Answer : 1. The twisting moment is greater than the resisting moment

If a close-coiled helical spring absorbs 50 N-mm of energy while extending by 5 mm, its stiffness will be (a) 2 N/mm (b) 4 N/mm (c) 6 N/mm (d) 10 N/mm

Description : If a close-coiled helical spring absorbs 50 N-mm of energy while extending by 5 mm, its stiffness will be (a) 2 N/mm (b) 4 N/mm (c) 6 N/mm (d) 10 N/mm

Last Answer : (d) 10 N/mm

What is a chemical reaction that releases energy by light or heat?

Description : What is a chemical reaction that releases energy by light or heat?

Last Answer : Need answer

An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product

Description : An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product

Last Answer : Answer : A

The role of a catalyst in a chemical reaction is to change the (A) Equilibrium constant (B) Activation energy (C) Final products (D) Heat of reaction

Description : The role of a catalyst in a chemical reaction is to change the (A) Equilibrium constant (B) Activation energy (C) Final products (D) Heat of reaction

Last Answer : (B) Activation energy

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the (A) Activation energy (B) Equilibrium constant (C) Heat of reaction (D) None of these

Description : Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the (A) Activation energy (B) Equilibrium constant (C) Heat of reaction (D) None of these

Last Answer : (A) Activation energy

The energy of activation of a chemical reaction: (A) Is same as heat of reaction at constant pressure (B) Is the minimum energy which the molecules must have before the reaction can take place (C) Varies as fifth power of the temperature (D) Both (B) and (C)

Description : The energy of activation of a chemical reaction: (A) Is same as heat of reaction at constant pressure (B) Is the minimum energy which the molecules must have before the reaction can take place (C) Varies as fifth power of the temperature (D) Both (B) and (C)

Last Answer : (B) Is the minimum energy which the molecules must have before the reaction can take place

The catalyst in a first order chemical reaction changes the (A) Equilibrium constant(B) Activation energy(C) Heat of formation of the product(D) Heat of reaction

Description : The catalyst in a first order chemical reaction changes the (A) Equilibrium constant (B) Activation energy (C) Heat of formation of the product (D) Heat of reaction

Last Answer : (B) Activation energy

What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential energy of the reactants decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Description : What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential ... decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Last Answer : A The reaction follows an alternative pathway of lower activation energy.

What is the term for the energy responsible for the variations in the reaction rates of chemical processes?

Description : What is the term for the energy responsible for the variations in the reaction rates of chemical processes?

Last Answer : It's hard to know precisely what is meant by this question. You may be thinking of activation energy, the minimum energy needed to start the reaction, which explains why one reaction may go ... reaction going faster and slower depending on the energy supply, then that's most often thermal energy.

Can thick diapers absorbs much more than a thin diaper?

Description : Can thick diapers absorbs much more than a thin diaper?

Last Answer : Put one of each on, soil yourself, and post some pictures. Then we can make that determination.

When chlorophyll absorbs light, what does it gets excited and emits? -Do You Know?

Description : When chlorophyll absorbs light, what does it gets excited and emits? -Do You Know?

Last Answer : answer:

which object absorbs the most sound waves?

Description : which object absorbs the most sound waves?

Last Answer : earplugs

In which process of plant protoplasm and cell wall absorbs water ?

Description : In which process of plant protoplasm and cell wall absorbs water ?

Last Answer : The plant absorbs water in the process of protoplasm and cell wall adsorption.

Which element in the atmosphere absorbs ultraviolet rays ?

Description : Which element in the atmosphere absorbs ultraviolet rays ?

Last Answer : Ozone in the atmosphere absorbs ultraviolet rays.

What does an object look like when it absorbs all the light ?

Description : What does an object look like when it absorbs all the light ?

Last Answer : An object appears black when it absorbs all the light.

Which animal absorbs water through its skin ?

Description : Which animal absorbs water through its skin ?

Last Answer : Molecule absorbs water through the skin.

Which element absorbs water vapor ?

Description : Which element absorbs water vapor ?

Last Answer : : The solid absorbs the main water vapor