For the study of heat exchange to be performed more accurately, it is performed within a device called calorimeter, which consists of a closed container unable to exchange heat with the environment and its interior. Within a calorimeter, the placed bodies exchange heat until they reach thermal equilibrium.
How to make water not freeze? How do scientists handle radioactive materials? Acid in the muscles? Moisture of air Compresses and heat of dissolution Blood - a buffer in our body Why should not man drink distilled water? What does TNT mean? Alchemy How does sand become glass?
Aldehyde is any organic compound that has the functional group - CHO - attached to the carbon chain. Here are some examples of aldehydes: Utility The best known aldehyde is metanal. It is also called formic aldehyde or formaldehyde. It is a colorless gas with a very strong and irritating smell.
It is the enthalpy of a neutralization reaction (between an acid and a base forming salt and water). The reaction is exothermic. It is the variation of enthalpy verified in the neutralization of 1mol H + of acid by 1mol OH- of the base, being all substances in total or infinite dilution, at 25 ° C and 1atm. Examples: It is the variation of enthalpy involved in dissolving 1mol of a given substance in an amount of water sufficient for the obtained solution to be diluted.
ÉTer is any organic compound where the carbon chain presents - O - between two carbons. Oxygen must be linked directly to two organic radicals (alkyl or aryl). The generic formula of ether is R - O - R, where R is the radical and O is the oxygen. Here are some examples: Utility The most well-known ether is ordinary ether, or ethoxyethane or diethyl ether.
- Systems where one or more components have particles with average dimensions less than 1000 nanometers (1 nanometer = 1nm = 10-9m). - Most colloids look cloudy or opaque. - Scattered is the least present substance. - Dismiss