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the reaction must occur without energy. I.e. the rolling of a ball down a hill

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If dissolving calcium chloride in water is spontaneous what is the sign?

Dissolving calcium chloride in water is not so spontaneous.


The burning of charcoal is a spontaneous process yet heat must first be applied to start a charcoal why?

Burning charcoal is spontaneous, but not at room temperature. To start the combustion energy must be added (in the form of heat). Once the temperature of the charcoal reaches a certain temperature it reacts exothermically and releases heat. This heat of reaction is sufficient to locally heat more charcoal so that it burns continuously.


What is selection criteria?

Selection criteria are the job-specific skills, personal qualities, desirable qualifications, knowledge and experience that the selection panel believe are needed to perform the duties of the advertised position successfully. Applicants are assessed against these criteria to determine their merit for the position. The main purpose of selection criteria is to create a level playing field for all prospective applicants so that each applicant is given the same opportunity to apply for the job. Selection panels use selection criteria to shortlist written applications for interviews.


What is the name of prokaryotic reproduction?

By atomically fusing with the gametes using spontaneous generation. The prupose of the fusion is so that the ionic bonding can multiply and the gametes are then able to rotate and then fuse to form the eukaryote for reproduction.


What were the experiments that were used to explain the concept of spontaneous generation?

Francesco Redi - One of the first to disprove spontaneous generation. An Italian doctor who proved maggots came from flies. (Italian 1668) Lazzaro Spallanzani - One of the first to disprove spontaneous generation. An Italian scientist who proved microorganisms could be killed by boiling. (Italian 1767) Louis Pasteur - One of the first to disprove spontaneous generation. A French scientist who proved that micro organisms was carried by dust not air. (French 1864) In 1953 Miller and Urey experiment called as electric spark experiment shows how process of formation of organic compounds or first living cell formation occur.

Related Questions

Is it criteria are or criteria is if there is more than one criteria?

The singular form of "criteria" is "criterion." So, "criterion is" would be proper, as would "criteria are." "Criteria is" or "criterion are" would not.


If dissolving calcium chloride in water is spontaneous what is the sign?

Dissolving calcium chloride in water is not so spontaneous.


What does rehearsed improvisation mean in drama?

Rehearsed improvisation is when you've made something up from the spot but repeated it many times so that it is perfected. Basically you rehearse the spontaneous improvisation that you made up. But because you've rehearsed it many times, it is no longer called 'spontaneous' but 'rehearsed'.


How does the water move into the atmosphere?

It does so by the process called evaporation.


Does all irreversible reactions are spontaneous?

No, not all irreversible reactions are spontaneous - for example, cooking an egg. Once it's cooked, there's no going back to the raw egg stage. But it takes a lot of heat to get to that stage, so it is not spontaneous. If you find an old egg laid by a hen, it will not have a hardboiled texture!


What group process is this called?

It would be easy to answer your question if it was complete. What is this process called ? seems to be an incomplete question. Which process you are talking about? There are many processes in this world of Biology.


Is respiration spontaneous?

Yes, spontaneous basically means by itself or you do it without noticing, so respiration or breathing is something we do without knowing like when we're sleeping.


Single word of criteria?

I take it you mean 'What is the singular form of the word criteria?' If so, the answer is criterion.


Can AND criteria determine fields selected for a query?

Criteria determine what records can be shown, not what fields can be shown, so the AND criteria cannot be used to determine what fields to select.


The burning of charcoal is a spontaneous process yet heat must first be applied to start a charcoal why?

Burning charcoal is spontaneous, but not at room temperature. To start the combustion energy must be added (in the form of heat). Once the temperature of the charcoal reaches a certain temperature it reacts exothermically and releases heat. This heat of reaction is sufficient to locally heat more charcoal so that it burns continuously.


What is the difference between product audit and process audit in automotive industry?

Product audit are audit for product itself. Criteria product, how to know the product, what is special identification an so on. Process audit are audit to the process to produce the part from incoming material to part become finish goods...


What is the process called when butter melts and the turns to a solid?

Well, if the butter is melted - it's a liquid. The process of a liquid becoming a solid is called "Solidification" So, in your case, it's called "Butter Solidification"