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The KELVIN scale is BASED on the absolute zero which MEANS GO NEGATIVE unlike Celsius scale. That is why it is convenient for all scientific calculations.

Gold mining from alluvium ores was once ACHIEVED by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold NUGGETS and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners. Hydraulic mining was USED widely in the Californian gold rush, and involved BREAKING down alluvial deposits with high-pressure jets of water. Hard rock ores have formed the basis of the MAJORITY of commercial gold recovery operations since the middle of the 20th century where open pit and or sub-surface mining techniques are used.

Hi. Reaction between Silver NITRATE SOLUTION and Sodium chloride solution is a DOUBLE displacement reaction in which a white precipitate of Silver chloride and Sodium nitrate solution is formed.Explanation:HOPE it helps!!!!

Iron loses shine because of 2 REASONS1) Scratches on the SURFACE causes irregularities on the surfaces. Because if this, light bounces of unevenly, and the shune DIES not form, although it'll still reflect light off its surface.2) Rust can also be a cause. The iron reacts with the MOISTURE in the air, and form rust. Rust is a reddish brown layer of Iron Oxide formed on the iron article's surface. This can be prevented by coating the iron with PAINT, or electroplating with metals like chromium or nickel, or instead using iron alloys like stainless steel.

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7.Chemical name--Sodium hydrogen carbonateFormula--NaHCO39.PH papers are paper infused, or saturated, with pH indicators or more frequently, a mixture of indicators. They are used to test for alkaline or acidity of a solution or SUBSTANCE such as soil. pH papers are usually sold as strips. The scale will tell you if the substance is acidic or alkaline, and to what degree.10.Plaster of Paris in contact with moisture (water) changes to solid hard mass, gypsum. Therefore, it gets wasted. Hence it should be stored in moisture proof containers.111.Salting icy roads and walkways lowers the freezing point of the water that forms ice which leads to melting and prevents falling snow or rain from being able to freeze.2.Calcium chloride can be used in place of common salt.3.The ten most important moral values for students and everyone in general to lead a great life are:Honesty:Respect:Family:Education and Hard Work:Adjustment & Compromise:Compassionate Nature:Have a look at Presentation on Why PERSONALITY Development for Students:Justice:12.Q solution has more concentration of H+ ion.We know that, In pH scale 7 is neutral and less than 7 are acidic and more than 7 are basic.13.1.To see if the river water contains some acid or not, the specialist can use a blue litmus paper. If the blue litmus paper changes to RED, then it is confirmed that the river contains some acid and if the colour does not CHANGE, this means river does not contain any acid.2.Melting is incorrectly used in place of corroding. Corroding is the correct term.3.Iron drain covers began fizzing because when acid ran over them reacts with iron; it releases hydrogen gas. Due to the formation of hydrogen gas, bubbles OCCUR and this causes fixing of drain covers.THIS IS YOUR CORRECT ANSWER☺☺Explanation:ANSWER NO. 6 AND 8 IS IN THE TWO ATTACHMENTS

The TOTAL PROBABILITY is ALWAYS 1 .EXPLANATION:

:-:-Here the volume of M/20 FAS required is not given.If we assume 1000 ml of M/20 FAS is to be prepared. Molecular Mass of FAS = 392Its M.F is FeSO4.(NH4)2SO4.6 H2O, whose Molecular Mass is 392.So if we dissolve (392/20=) 19.6 g of FAS in a 1000 ml. standard FLASK, with a small addition of dil. H2SO4, to avoid turbitidity and then distilled water is added up to the mark and shaken well for uniform CONCENTRATION, we get M/20 or 0.05M Solution.1 MOLE of FAS (392-g) in 1000 ml gives = 1M Solution.0.1 mole of FAS (392/10= 39.2 )-g in 1000 ml gives 0.1M Solution.0.05 mole of FAS (392/20= 19.6) g in 1000 ml gives M/20 or 0.05M Solution.hope it is your helping..

Ketone contains an extra alkyl GROUP, COMPARED to aldehyde, which releases electron towards carbonyl carbon MAKING it less electropositive. Therefore, aldehyde UNDERGO a NUCLEOPHILIC addition reaction more easily than ketones.

h2+cl2==2hclthis is CORRECT ANSWER

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ectric CURRENT is passed through a colloidal sol, the colloidal particles move TOWARDS oppositely CHARGED electrode, where they LOSE their charge and are coagulated. The process is known as elelectrophore sis .

Turmeric CONTAINS a chemical called CURCUMIN, which remains yellow in an acidic or NEUTRAL solution, but turns red in a base. When you ADD turmeric into a basic solution, it changes to a deep red colour.

le" says: the maximum covalency of 2ND-PERIOD elements. It doesn't say for all elements in the 2nd period, but rather, when CONSIDERING each ELEMENT.Therefore, Maximum valance of second period element is four.Pls mark me as brainliestt plssss

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These are four main factors that AFFECT the main of OBJECT. these factors are FORCE,friction, INERTIA and MOMENTUM

dation NUMBER of a FREE element is ALWAYS 0.The oxidation number of a monatomic ion equals the charge of the ion.The oxidation number of H is +1, but it is -1 in when combined with LESS ELECTRONEGATIVE elements.The oxidation number of O in compounds is usually -2, but it is -1 in peroxides.#нσρє íт нєℓρѕ♡~#мαяк αѕ вяαíηℓíѕт☘️

here is the answer of your question HOPE it's helpful for you Explanation:Mass of compound = 0.24 g and, mass of BORON = 0.096 g percentage of boron in the compound = mass of boron / mass of compound * 100 = 0.096/0.24 * 100 = 40% mass of oxygen = 0.144 g again, mass of compound = 0.24 g percentage of oxygen in compound = mass of oxygen/mass of of compound * 100 = 0.144/0.24 * 100 = 60% thus, the percentage of oxygen and boron in the compound is 60% and 40% respectively.Total mass of compound = 0.24 gMass of boron in it = 0.096 gTherefore % composition by weight of boron = (Mass of boron/ Total mass of compound)*100= (0.096/0.24)*100= 40 %Mass of oxygen in the compound = 0.144 gTherefore % composition by weight of oxygen = (Mass of oxygen/ Total mass of compound)*100= (0.144/0.24)*100= 60 %.The compound is made up of only boron and oxygen, therefore the % composition of the componenets sum to 100% (60% + 40%)

In 1866 , an English scientist NAMED Newland invented the laws of octaves.Hope this HELPS....

ic principle shared by all spectroscopic techniques is to shine a beam of electromagnetic RADIATION ONTO a sample, and OBSERVE how it responds to such a STIMULUS. The response is usually recorded as a function of radiation WAVELENGTH.#нσρє íт нєℓρѕ♡~#мαяк αѕ вяαíηℓíѕт☘️

Coolers: Desert coolers are based on the SIMPLE principle that when unsaturated AIR comes in contact with water, the water evaporates. In the process, the moisture content of air increases, while its temperature decreases. The RESULTING cold but moist air is USED for PROVIDING cooling.#нσρє íт нєℓρѕ♡~#мαяк αѕ вяαíηℓíѕт☘️

रासायनिक सूत्र (CHEMICAL formula) किसी रासायनिक यौगिक को इस प्रकार निरूपित करता है जिससे पता चलता है कि वह यौगिक किन-किन तत्वों के कितने-कितने परमाणुओं से मिलकर बना है। सामान्य प्रयोग में प्रायः अणुसूत्र (molecular formula) के लिये भी 'रासायनिक सूत्र' का ही प्रयोग कर दिया जाता है।उदाहरण : मिथेन का अणुसूत्र (CH4) है जो इंगित करता है कि मिथेन का अणु कार्बन एवं हाइड्रोजन के परमाणुओं से मिलकर बना है तथा मिथेन के एक अणु में कार्बन का एक परमाणु व हाइड्रोजन के चार परमाणु होते हैं। परन्तु इस सूत्र से यह पता नहीं चलता कि कार्बन का एक परमाणु व हाइड्रोजन के ये चार परमाणु किस प्रकार व्यवस्थित हैं। अर्थात ये एक ही समतल में हैं या त्रिबिम में हैं; इनके बंधों के बीच कितना कोण है; बन्धों की लम्बाई कितनी है, आदि का अणुसूत्र से कुछ भी ज्ञान नहीं होता।कई प्रकार के रासायनिक सूत्र उपयोग किये जाते हैं जिनकी अलग-अलग उपयोगिता है और अलग-अलग जटिलता भी। बढ़ते हुए जटिलता के क्रम में ये हैं - आनुभविक सूत्र, अणुसूत्र, संरचना सूत्र।उदाहरण संपादित करेंजल H2Oएथनॉल, C2H6Oबेरियम नाइट्रेट BA(NO3)2सोडियम क्लोराइड NACL

what do you know about this and why you ASKING to me WRITE yourselfExplanation:HAY bro I am not free to answert you

Redox potential measurements ALLOW for rapid characterization of the degree of reduction and for predicting stability of various compounds that REGULATE NUTRIENTS and metal availability in SOIL and sediment. Explanation:Hope it is correct✅ ANSWER

To determine the number of significant figures in a number use the following 3 rules: Non-zero digits are always significant. Any ZEROS between TWO significant digits are significant. A final zero or TRAILING zeros in the decimal portion ONLY are significant.Explanation:Nikuuu~

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The INTERNATIONAL SYSTEM of UNITS (SI, abbreviated from the French Système international (d'unités)) is the modern FORM of the METRIC system.

NTO DETERMINEThe DERIVATIVE of EVALUATIONLet the given expression = yThus we get Differentiating both SIDES with respect to x we get FINAL ANSWER━━━━━━━━━━━━━━━━Learn more from Brainly :-1. Let f(1) = 3,f' (1)=- 1/3,g (1)=-4 and g' (1) =-8/3The derivative of √[[f(x)]^2+ [g (x)]^2]brainly.in/question/183123182. If INTEGRAL of (x^-3)5^(1/x^2)dx=k5^(1/x^2), then k is EQUAL to? brainly.in/question/154278823. If integral of (x^-3)5^(1/x^2)dx=k5^(1/x^2), then k is equal to?brainly.in/question/15427882

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Azo-Dye Test:This test is PERFORMED in order to confirm the presence of aromatic amines. Aromatic amines FORMS a diazonium salts when treated with HNO2. These diazo compounds couple with phenols like β-naphthols forms an orange azo dye which is insoluble in water. The chemical reaction is GIVEN below.

A molecule may consist of nonmetallic atoms of a single chemical ELEMENT, as with oxygen (O2), or of different elements, as with water (H2O). The GEOMETRY and composition of a molecule will determine its chemical and physical PROPERTIES. Isomers are MOLECULES with the same atoms in different geometric arrangementsExplanation:Plz MAKE me brainliest

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