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Generally urease TESTS are used to DETECT the presence of urea in the urine sample. The enzyme urease decomposes urea intoammonia and carbon dioxide. On ADDING an alkaline substance, ammonium carbonate to it, changes the slightly acidic urine to an alkaline SOLUTION.

When an ideal gas is COMPRESSED ADIABATICALLY (Q=0), work is done on it and its temperature INCREASES; in an adiabatic expansion, the gas does work and its temperature drops. ... Nevertheless, because work is done on the mixture during the COMPRESSION, its temperature does rise significantly.HOPE IT HELPED YOU MARK ME AS BRAINLIST

ert acetic acid to ETHANE simply treat acetic acid with NaOH and CaO it will GIVE ethane. This reaction is KNOWN as decarboxylation . R-H +CO2 . So acetic acid will give METHANE .

Uranium is an ELEMENT with ATOMIC number 92. The prefix ''trans'' means ''beyond'' so the transuranium elements are those with atomic numbers GREATER than 92. ... Of these, the only elements that have been observed in nature are neptunium and PLUTONIUM, which have atomic numbers 93 and 94, respectively

Chlorine and FLUORINE do have a resonance EFFECT, but it is much LESS in COMPARISON to the instructive effect exerted by them. Because of exceptionally high electronegativity of halogens, the magnitude of -I effect exerted by them is way more than the +R effect because of LONE pair of electrons on them

the key difference between 24K gold and 22K gold: Purity: 24K SIGNIFIES 99.9 % purity and 22K is approximately 91 PERCENT pure gold, with the other 9% consisting of other METALS such as copper, silver,zinc, etc. ... The presence of additional metals in 22K gold HELPS to make the jewellery more DURABLE.

tion'- The Relationship between CELL Potential & Free Energy — A coulomb (C) relates ELECTRICAL potential, EXPRESSED in VOLTS, and energy, expressed in joules. ... Adding together the ΔG values for the half-reactions GIVES ΔG for the overall reaction, which is proportional to both the potential and the number of electrons (n) transferred

Hello mate Explanation:The SYSTEMATIC IUPAC NAME of acetic ACID is ethanoic acid and its chemical formula can also be written as C2H4O2. Vinegar is a solution of acetic acid in water and contains between 5% to 20% ethanoic acid by volume. The pungent smell and the SOUR taste is characteristic of the acetic acid present in it.

yes if you are in touch with booksExplanation:means you ATTEND CLASSES properly with PRESENCE of mind

※Handbook of PhysicsHandbook of Physics ARIHANT Experts. ...※Handbook of MathematicsHandbook of Mathematics Arihant Experts. ...※Handbook of ChemistryHandbook of CHEMISTRY Arihant Experts. ...※Chapterwise PRACTICE Tests of PCM for JEE ※MainChapterwise Practice Tests of PCM for JEE Main Cengage India.Explanation:this are some books it MAY HELP you for your jee preparation...

charge of an ion depends upon gain or LOSS of electrons. electrons are negetive CHARGED. for example: METALS donate thier free electrons and gain a positive state and HENCE, they are called as positive ions.

Explanation:The oxidation number method, also called oxidation STATES, keeps track of electrons GAINED when a SUBSTANCE is reduced and the electrons lost when a substance is oxidized. Each ATOM in a neutral molecule or CHARGED species is assigned an oxidation number.

as three common ISOTOPES, with the MASSES and isotopic abundances shown below: Argon-36 ---> 35.97 u and 3.353 %. Argon-38 ---> 37.96 u and 0.868 %. Argon-40 ---> 39.96 u and ____ %. Determine the average atomic mass of argon to two decimal places. Follow • 1 ... Then PROCEED as FOLLOWS: 35.97 x 0.03353 ...Explanation: i hope this helps you

Chromium(III) SULFATE usually REFERS to the inorganic compounds with the formula Cr2(SO4)3.x(H2O), where x can range from 0 to 18. Additionally, ill-defined but COMMERCIALLY important "basic chromium sulfates" are known. These salts are usually either violet or green SOLIDS that are soluble in water. It is commonly used in tanning LEATHER.

As temperatures increase, ADDITIONAL heat energy is applied to the constituent parts of a solid, which causes additional MOLECULAR motion. Molecules begin to push against one ANOTHER and the OVERALL volume of a substance increases. At this point, the matter has entered the liquid state

tion:Lewis Acid: a species that ACCEPTS an electron pair (i.e., an electrophile) and will have vacant orbitalsLewis Base: a species that donates an electron pair (i.e., a nucleophile) and will have lone-pair electronsVarious species can act as Lewis acids. All cations are Lewis acids since they are able to accept electrons. (e.g., Cu2+, Fe2+, Fe3+)An atom, ION, or molecule with an incomplete octet of electrons can act as an Lewis acid (e.g., BF3, AlF3).Molecules where the central atom can have more than 8 valence shell electrons can be electron ACCEPTORS, and thus are classified as Lewis acids (e.g., SiBr4, SIF4).Molecules that have multiple bonds between two atoms of different electronegativities (e.g., CO2, SO2)Lewis base can be \(OH^-\), \(CN^-\), \(CH_3COO^-\), \(:NH_3\), \(H_2O:\), \(CO:

There are (at least) two things we would like to know concerning the fact that the home planet has an ocean and its siblings in space do not:What is so special about Earth that allows it to have an ocean?And how does having an ocean make the Earth a good place for Life?We have already identified two vital ingredients of the answer to the first question: size and distance to the home star (or better: energy received). Are there others? Is it important what stuff the Earth is made of? Or did Earth, as a planet, have a history of evolution that is fundamentally different from the histories of its siblings? To put the question within the framework of the thought experiments of the previous SECTION: If we put Venus in the position of Earth, will it acquire an ocean?Let's look at these various questions one at a time. First, we note that the mass of the film of water on Earth, the "hydrosphere", is very small when compared to the mass of the planet. The mass of Earth is about 6 x 1027 grams (1027 stands for "10 multiplied by itself 27 times", that is, a 1 with 27 zeroes). The mass of the hydrosphere is about 1.5 x 1024 grams or 1:4000 (0.025%) of Earth's total mass.Present day outgassing of water by Old Faithful Geyser Yellowstone National Park (Source: Scott Purl)This value of 0.025% is significant. It means that there is no problem in deriving the water from the kind of planetary matter that is abundant in the solar system. We know what this material looks like from studying the COMPOSITION of metallic and stony meteorites. On average the water content of meteorites is well above 1:1000 (0.1%). Scientists generally agree these meteorites are a good sample of the kind of stuff that formed the Earth, by gravitational accretion. Thus, Earth's ocean evolved from the water expelled from this material, as it heated up during the EARLY history of our planet. Whatever the exact course of events might have been during the formation of Earth, we would have to admit that there was enough water in the primordial METEORIC matter to make the ocean. This line of reasoning pretty much eliminates the likelihood that our neighbors in space, the Moon, Venus and Mars, don't have enough water within their bodies to make oceans.

There are TWO WAYS CELL division can happen in humans and most other animals, called mitosis and meiosis. When a cell divides by way of mitosis, it produces two CLONES of itself, each with the same number of chromosomes. When a cell divides by way of meiosis, it produces four cells, called gametes.

kkkkkkExplanation:MUTATION is the only way to vary the gene POOL in a population that REPRODUCES by sexual REPRODUCTION

the COMPUTING MACHINE for CALCULATING

C = 450.45 J /Kg °CExplanation: We have a formula, Q = mC∆T where we take Q in joules, m in Kgs and ∆T in °C. Now first of all, we will need to change m in kgs. We know that, 1 kg = 1000G 1kg 111 g × ---------- = 0.111 kg 1000g Now, we will SET the formula, Q = mc∆T ------ --------- (Dividing m∆T on both sides) m∆T m∆T ==> Q C = -------- m∆T now, PUTTING the values, 125 J C = ---------------------------- 0.111 Kg × 2.5 °C C = 450.45 J /Kg °C which is the required answer.

Biofortification is the process by which the nutrient density of FOOD crops is increased through conventional PLANT breeding, and/or improved agronomic practices and/or MODERN biotechnology WITHOUT sacrificing any characteristic that is preferred by consumers or most importantly to farmers

Law of multiple proportions, states that when two element combine with each other to FORM more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. For example, there are five DISTINCT oxides of nitrogen, and the weights of oxygen in combination with 14g of nitrogen are, in increasing ORDER, 8,16,24,32 and 40 grams, or in a ratio of 1,2,3,,5. Explanation:Law of multiple proportions, states that when two element combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. For example, there are five distinct oxides of nitrogen, and the weights of oxygen in combination with 14g of nitrogen are, in increasing order, 8,16,24,32 and 40 grams, or in a ratio of 1,2,3,,5.

you can DIE I am FINE to CONSIDER them and consider them

tion:Metals are elements that give off “free” electrons. Metals generally have ANYWHERE between 1 to 3 electrons excess of a closed shell. Non-metals on the other HAND have similar NUMBER of electrons in deficit of the NUMBERS required for a closed shell. That is deficit in between 1 to 3 electrons

inate covalent bond, ALSO KNOWN as a dative bond, dipolar bond, or coordinate bond is a KIND of two-center, two-electron covalent bond in which the two ELECTRONS derive from the same atom. The bonding of METAL ions to ligands involves this kind of interaction.❄️☺️❤️

Explanation:H2SO4 - acid   (SULPHURIC acid )KOH = base  (potassium hydroxide )NH4OH - base  (ammonium hydroxide)Ca(OH)2​ - base  (CALCIUM hydroxide )CH3COOH - acid (acetic acid )

tion: Naming hydrocarbonsNaming hydrocarbonsoct-2-ene. The PREFIX oct- tells US there are eight carbon atoms in the longest CHAIN. ...Naming hydrocarbonsoct-2-ene. The prefix oct- tells us there are eight carbon atoms in the longest chain. ...3-methylhexane. The prefix hex- tells us there are six carbon atoms in the longest chain. ...Naming hydrocarbonsoct-2-ene. The prefix oct- tells us there are eight carbon atoms in the longest chain. ...3-methylhexane. The prefix hex- tells us there are six carbon atoms in the longest chain. ...HEPT-3-yne. The prefix hept- tells us there are seven carbon atoms in the longest chain. ...Naming hydrocarbonsoct-2-ene. The prefix oct- tells us there are eight carbon atoms in the longest chain. ...3-methylhexane. The prefix hex- tells us there are six carbon atoms in the longest chain. ...hept-3-yne. The prefix hept- tells us there are seven carbon atoms in the longest chain. ...4-ethyl-4-methylhept-2-yne.

tion:The NUMBER of ELECTRONS in the valence shell of the central ATOM of a molecule is 8. The molecule is SCl 2 . The central S atom has 2 bond PAIRS of electrons and 2 lone pairs of electrons.

tion:Caesium CHLORIDE or CESIUM chloride is the inorganic compound with the formula CsCl. This colorless salt is an important SOURCE of caesium ions in a variety of niche applications. Its crystal STRUCTURE forms a major structural type where each caesium ion is coordinated by 8 chlorine ions. Caesium chloride dissolves in water. hope it's HELPFUL to you dear

tion:A velocity-time graph shows the SPEED and DIRECTION an object travels over a SPECIFIC period of time. Velocity-time graphs are also called speed-time graphs. The VERTICAL axis of a velocity-time graph is the velocity of the object. The HORIZONTAL axis is the time from the start.

hed a file HOPE it helps u if so MARK as BRAINEST

All elements in group 1 have 1 VALENCE ELECTRON so they have a valency of +1 as they will tend to GIVE up 1 electron. This is the same for group 2 which will give up two electrons and group 3 which will give up 3 electron .Explanation:Hope it helps you. Stay HAPPY and blessed!!

it's chemistry sums air in a ROOM it's not soild and not LIQUID it's like gas4:1do the sum of. RATIO of 4 :1THEN answer will come

800Explanation:

s FOUND in the form of sulphide and carbonates are first converted to their oxides by the PROCESS of roasting and calcination. Oxides of metals so obtained are converted into metals by the process of reduction.Elements: LEAD; GOLD; Copper; Iron; MAGNESIUM...⚠️ ᕼOᑭᗴ YOᑌ ᗩᖇᗴ ՏᗩTIՏᖴIᗴᗪ ᗯITᕼ ᗰY ᗩᑎՏᗯᗴᖇ ! Iᖴ ՏO..........✅ ᑭᒪZ ᗰᗩᖇK ᗩՏ ᗷᖇᗩIᑎᒪIᗴՏT ✅✅ ᑭᒪZ ᖴOᒪᒪOᗯ ᗰᗴ ✅✅ ᑭᒪZ ᘜIᐯᗴ TᕼᗩᑎKՏ TO ᗰY ᗩᑎՏᗯᗴᖇՏ ✅〰️〰️〰️〰️〰️〰️〰️〰️〰️〰️〰️〰️〰️〰️@ɮʀօӄɛռ աɨȶ¢ɦ !