Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.

Most chemical reactions are reversible, that is they can and do run in both directions.

Most of the country's products are in engineering, especially in automobiles, machinery, metals, and chemical goods.

( Most of the universe's mass is not in the form of chemical elements — that is, " baryonic " matter — but is made up of dark matter and dark energy.

Most inhalant drugs that are used non-medically are ingredients in household or industrial chemical products that are not intended to be concentrated and inhaled.

Most tanks and infantry fighting vehicles ( IFVs ) of the 21st century have specially designed nuclear, biological and chemical protective systems that make them internally air-tight and sealed ; they are well protected from vapors, gases, and liquids.

Most industrial chemical applications of potassium employ the relatively high solubility in water of potassium compounds, such as potassium soaps.

Most chemical synthesis methods proceed from C-terminus to N-terminus, opposite the biological reaction.

Most inhalant drugs that are used non-medically are ingredients in household or industrial chemical products that are not intended to be concentrated and inhaled, including organic solvents ( found in cleaning products, fast-drying glues, and nail polish removers ), fuels ( gasoline ( petrol ) and kerosene ), and propellant gases such as Freon and compressed hydrofluorocarbons that are used in aerosol cans such as hairspray, whipped cream, and non-stick cooking spray.

Most satellites have simple reliable chemical thrusters ( often monopropellant rockets ) or resistojet rockets for orbital station-keeping and some use momentum wheels for attitude control.

Most ores are a chemical compound of the metal with other elements, such as oxygen ( as an oxide ), sulfur ( as a sulfide ) or carbon and oxygen together ( as a carbonate ).

Most chemical processes can be studied directly in a laboratory, using a series of ( often well-tested ) techniques for manipulating materials, as well as an understanding of the underlying processes.

Most of this plasticity occurs at the neurochemical level ; dopamine transport systems are slowed, allowing dopamine to linger for longer periods of time in the chemical synapses in the striatum.

Most commonly associated with radiological or chemical materials, dirty bombs seek to kill or injure and then to deny access to a contaminated area until a thorough clean-up can be accomplished.

Most satellites have simple reliable chemical thrusters ( often monopropellant rockets ) or resistojet rockets for orbital station-keeping and some use momentum wheels for attitude control.

Most chelicerates rely on modified bristles for touch and for information about vibrations, air currents, and chemical changes in their environment.

Most Culture individuals opt to have drug glands that allow for hormonal levels and other chemical secretions to be consciously monitored, released and controlled.

Most industrial complexes are scattered throughout the city, however, the ' Zachem ' chemical works deserves attention, covering tens of square kilometers in the south-east of the city, the remnants of the German explosives factory built in World War II occupy an area which has its own rail lines, internal communication, housing, and large forested area.

Most LDPE, MDPE and HDPE grades have excellent chemical resistance, meaning that it is not attacked by strong acids or strong bases.

Most cast irons have a chemical composition of 2. 5 to 4. 0 % carbon, 1 to 3 % silicon, and the remainder is iron.

" Most autotrophs capture the suns energy in chlorophyll, but some autotrophs ( the chemolithotrophs ) obtain energy by the chemical oxidation of inorganic compounds and can grow in dark environments, such as the sulfur bacterium Thiobacillus, which lives in hot sulfur springs.

Most of the fat must be trimmed off prior to drying the meat, as fat does not dry, thus creating the potential for spoilage as the fat becomes rancid ( modern vacuum packing and chemical preservatives have served to help prevent these risks ).

Most spacecraft have some variety of rocket engine, and thus most research efforts focus on some variety of rocket propulsion, such as chemical, nuclear or electric.

Most force fields in chemistry are empirical and consist of a summation of bonded forces associated with chemical bonds, bond angles, and bond dihedrals, and non-bonded forces associated with van der Waals forces and electrostatic charge.

Most classical force fields implicitly include the effect of polarizability, e. g. by scaling up the partial charges obtained from quantum chemical calculations.

Most of these g-loaded tests typically involve some form of abstract reasoning.

Most IQ tests are constructed so that there are no overall score differences between females and males.

Most computers have a conditional branch instruction that tests the sign of a value in a register, or the sign of the result of the most recent arithmetic operation.

Most classes rely on a combination of lectures, recitations led by graduate students, weekly problem sets (" p-sets "), and tests.

Most commercial opiate screening tests based on immunoassays cross-react appreciably with these metabolites.

Most reviews conclude that opioids produce minimal impairment of human performance on tests of sensory, motor, or attentional abilities.

Most statistical tests can be described in the form of a statistical model.

Most pseudorandom generator algorithms produce sequences which are uniformly distributed by any of several tests.

Most legislatures prefer to base liability on either intention or recklessness and, faced with the need to establish recklessness as the default mens rea for guilt, those practising in most legal systems rely heavily on objective tests to establish the minimum requirement of foresight for recklessness.

Most precision tests of the properties of antihydrogen can be done only if the antihydrogen is trapped, meaning held in place for a long time.

Most often, tests are done in duplicate or triplicate.

Most have slightly abnormal liver function tests such as a raised aspartate transaminase, alanine transaminase and bilirubin level.

Most physicians and surgeons who perform vasectomies recommend one ( sometimes two ) post-procedural semen specimens to verify a successful vasectomy ; however many men fail to return for verification tests citing inconvenience, embarrassment, forgetfulness, or certainty of sterility.

Most purity tests have possible scores anywhere from 0 % to 100 %.

Most tests involve testing ingredients rather than finished products, but according to BUAV, manufacturers believe these tests overestimate the toxic effects of substances ; they therefore repeat the tests using their finished products to obtain a less toxic label.

Most popular primality tests are probabilistic tests.

Most standard helmet tests use speeds between.

Most contemporary road tests used the more powerful Tri-Power engine and four-speed.

Most tests were limited-yield underground test shots.

Most serological tests would succeed only after a certain period of time past the symptom onset ( usually a week ).

Most tests employ a monoclonal antibody, which is specific to the β-subunit of hCG ( β-hCG ).