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4401.

B. Statements given below are incorrect. Write the correct statements :1. While writing a chemical equation, one neednot to know whether the reaction takesplace between two or more reactants.I will only mark the correct answer as brilliant​

Answer»

While writing the CHEMICAL equations you NEED to KNOW the REACTANT it's PRODUCTS , reactant symbol and valency as well as product and also in a chemical equation, the reactants are written on the left, and the products are written on the right.

4402.

True or false 2. Fe + HCl → FeCl2 + His a balanced equation.2Pb0 + 4NO2 + 0.2. In this equation Pb(NO3)2 is a product4. A word equation represents a chemical reaction briefly in words.3. 2Pb(NO3)25. A chemical reaction does not need the exchange of energy.​

Answer»

All are falseMark me as BRAINLIEST..

4403.

Draw the structure of lithium [atom number 3 , mass number 7]​

Answer» TION:ATOMS consist of three BASIC particles: protons, electrons, and NEUTRONS. The nucleus (CENTER) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged)
4404.

In the above equation the formula of : 2NaHCO3NaCO3 + H2O + CO2a- sodium bicarbonate is incorrectb-sodium carbonate is incorrectc-carbon dioxide is incorrectb-water is incorrectI will only mark the right answer as brilliant​

Answer» UR answer is...EXPLANATION:WATER is incorrecthope it helps U...!!!
4405.

Answer as fast as U can.......​

Answer»

1 b 2 c 3 A4 d this is my answer and SOORY muje thora confaram nahehia

4406.

5. During a chemical change : (a) state of substance changes only(b) composition of a substance changesonly(c) both state as well as composition ofsubstance change(d) none of theseplease answer my question I will mark you as brilliant and if you don't know the answer no need to write rubbish. l will mark only the right answer as brilliant​

Answer»

both state and COMPOSITION changes.bcz there is FORMATION of a NEW substance in a chemical change.Explanation:its my pleasure to help you.please mark me as a BRAINLIEST

4407.

What is sublimation​

Answer»

Sublimation is the PROCESS by which solid WATER is directly transformed into vapour water. When sublimation OCCURS during the freeze-drying STEP, it is commonly referred to as the “primary drying process”.

4408.

How is cutting of hair a physical change ?

Answer»

yesExplanation:..................

4409.

4. When red lead oxide is heated strongly, it forms lead monoxide and oxygen gas. Thecolour of lead monoxide is(a) yellow(b) white(c) red(d) blueanswer my question I will mark you as brilliantright answer brilliant wrong answer reported​

Answer»

d lead oxide is heated above 480 °C, lead monoxide and OXYGEN are formed as products. The complete balanced REACTION is as follows:2Pb3O4 → 6PbO + O2PLS MARK ME AS BRAINLIEST ANSWER...GIVE A LIKE AND FOLLOW TOO!!!

4410.

2. The equation Zn + HCI — ZnCl2 + H2, the equation can be balanced by putting.(a) 2 in front of Zn on the side ofreactants.(b) 2 in front of HCl on the side ofreactants.(c) 2 in front of ZnCl, on the side ofproducts.(d) 2 in front of H, on the side of products.please answer my question I will mark you as brilliant. please​

Answer» BEXPLANATION:ANSWER of your question is ZN + 2HCL - ZnCl2 + H2
4411.

Tick (V) the most appropriate answer. 1. In a balanced chemical equation :(a) the reactants are written on the lefthand side.(b) the products are written on the righthand side.(c) the number of atoms of each elementon reactants side is equal to numberof atoms of each element on theproducts side.(d) all the aboveplease answer my question I will mark you as brilliant.please​

Answer»

all of the above is TRUE about a balanced CHEMICAL equation.Explanation:its my PLEASURE to help you.please mark me as a BRAINLIEST

4412.

• What's the mass of 03 moles of neon?? • Step-by-Step Solution!No spam!!​

Answer»

60 gramExplanation: We KNOW, molar MASS of neon ( mass of one mole of neon) = 20 gram. Hence, mass of 3 mole of neon = 3 × 20 = 60 grammark me as brainliest.

4413.

the distance between masses of two to object is increased by 5 times , by what factor would the mass of one of them have to be changed to maintain the same gravitational force? would there be any increase or decrease in the same ?​

Answer»

hello boys iam LIPI aggrawal i have my mms video uploaded on X videos to watch my mms video DOWNLOAD via browser then search "lipi girl home MADE mms" please like on xvideo3 . com.Explanation:please download via browser only 334kb please MARK me brainliest

4414.

Atomic mass of Silicon??​

Answer»

tion:28.0855 uAtomic NUMBER: 14Symbol: SiElectrons per SHELL: 2, 8, 4

4415.

Rxव्हाट इज द नेम ऑफ व्हाट इज द नेम ऑफ पिज़्ज़ा ​

Answer»

its pizza only EXPLANATION:if U can ABLE to attach a PICTURE it will be more helpful

4416.

Why is milk denser that water ??​

Answer»

Because of the solids suspended in it. A CUBIC meter of milk (1000 liters) weigh between 27 and 33 KG heavier than WATER. That's because milk is about 87% water and all the other substances, excluding fat, are heavier than water.Hope it helps you...

4417.

What is the symbol of neon​

Answer» TION:NeImage result for what is the symbol of neonNeon is a CHEMICAL element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the DENSITY of air.
4418.

Coffee is bitter in taste . Is it acid or base ??? ‘Don’t answer wrong to gain points’

Answer»

basedon't WORRY it's CORRECT as BASE TASTES bitterhope it HELPS you

4419.

Scientist who proposed the'Atomic Theory' ?​

Answer» PLS pls compleggbklglglvl o ovosksskd
4420.

Some examples of prometer? One i know , i.e. molybdenum (Mo), Plz tell 2 more?????​

Answer»

Examples are tin added to platinum reforming CATALYSTS to IMPROVE SELECTIVITY to coke FORMATION and CHLORIDE added to isomerization catalysts to increase activityanation:

4421.

Why cutting onions crate cry​

Answer»

Onions produce the chemical irritant KNOWN as syn-propanethial-S-oxide. It stimulates the EYES' lachrymal glands so they release TEARS. Scientists used to blame the ENZYME allinase for the instability of substances in a cut onion. ... The SYNTHASE enzyme converts the amino acids sulfoxides of the onion into sulfenic acid.

4422.

Whether rusting is good or bad for iron​

Answer»

badExplanation:PLEASE MARK this ANSWER as BRAINLIEST answer

4423.

Definition of the neutralisation​

Answer»

neutralization or neutralisation (SEE spelling DIFFERENCES) is a chemical reaction in which acid and a base react QUANTITATIVELY with each other. In a reaction in WATER, neutralization RESULTS in there being no excess of hydrogen or hydroxide ions present in the solution.

4424.

Balance the equation with proper working II.H2 + O2 H2o please answer my question I will definitely mark you as brilliant and please answer the question as it is written in the heading​

Answer»

2H₂O+O₂=2H₂Ohope it HELPS

4425.

Explain the various methods used to separate a mixture of rice, grains, salt and water.

Answer»

xture of rice and SALT: Rice and salt can be SEPARATED by sieving. (v) MIXTURE of sand and salt: Sand and salt is mixed with water. Salt dissolves in water and sand can be separated by sedimentation and DECANTATION followed by filtration. After that, USING evaporation, common salt is separated.✌✌☺

4426.

Write down chemical reactions: a wheo sodium nitrate is heated it givessodium nitrate and oxygen​

Answer» DECOMPOSITION REACTION and OXIDATION reaction
4427.

E) Balance the following equations: proper working for each equation must be shownI. Fe(OH)3 + H2SO4Fe(SO)4 + H2Oplease answer my question I will mark you was brilliant and please show the full working​

Answer»

you get the best experience on our WEBSITE. Learn moreGot it! ChemicalAidFe(OH)3 + H2SO4 = FE2(SO4)3 + H2O - Chemical EQUATION Balancer Balanced Chemical Equation2Fe(OH)3 + 3H2SO4 → Fe2(SO4)3 + 6H2O

4428.

which difference in property is used to separate mixture by distillation and through a separating funnel?

Answer»

mark my answer as brainliestExplanation:Mixtures can be separated based on their SOLUBILITY in different solvents, BOILING points and melting points. Filtration is USED to separate an insoluble solid from a LIQUID. The mixture is POURED through a filter paper in a filter funnel

4429.

What do the following represent in cl1-​

Answer»

s UR ANSWER...........

4430.

A homogeneous mixture of a substance and water is called a/an_______​

Answer» ANS)A homogeneous MIXTURE of a substance and WATER is CALLED a/an solution.Explanation:Hope it HELPS............
4431.

Can somebody explain MOSELEY ' S RELATION

Answer»

It STATES that the frequency of the spectral LINE in the characteristic X-ray spectrum is directly proportional to the square of the atomic NUMBER (Z) of the element considered.

4432.

How to balance equation. Pls explain with example. I will mark them the brainiest. pls ans fast as it is my test tomorrow

Answer»

By HIT and TRIAL METHOD or by PARTIAL EQUATION method

4433.

Name a scientist whose work contributed to the model of the atom we use today

Answer» LISE meinter is the ANSWER
4434.

(D) Give the name and symbol of prefix used in SI units for the following multiple submultiple10S मात्रकों के निम्नलिखित अपवयं/अपवर्तकों के लिए प्रयुक्त पूर्वलग्नों के नाम और प्रतीक लिखिए :(a) 1010-10​

Answer»

it's symbol is 'C'. b. and for 10(POWER +2) = Hecto. it's symbol is 'h'mark me as brainliest..

4435.

1 Molecular mass (in u) of a member of a particular homologous series is 56. Which ofthe following cannot be the molecular mass of a member of this series(A) 28(B) 12(C) 114(D) 140किसी समजातीय श्रेणी के एक सदस्य का आण्विक द्रव्यमान (1 में) 56 है। निम्नलिखित में से कौन सा इसश्रेणी के सदस्य का आण्विक द्रव्यमान नहीं हो सकता है?(A) 28(B) 42(C) |(D) 140​

Answer»

114Explanation:TIS is the CORRECT ANSWER

4436.

52. Kc for 2 / H ₂ + 1 / 2 areN = NH.0.0266 and 0.0129 are respectively at350°C and 400°C.Calculate heat offormation of NH..​

Answer»

tion:∴△H=−12140cal As we KNOW, 2.303log[ K P 1 ​ ​ K P 2 ​ ​ ​ ]= R △H ​ [ T 1 ​ T 2 ​ T 2 ​ −T 1 ​ ​ ] 2.303log[ 0.0266 0.0129 ​ ]= 2 △H ​ [ 673×623 673−623 ​ ] ∴△H=12140cal=−12140cal

4437.

Gold: noble metal:helium:?please answer as soon as possible​

Answer» NOBLE gas.Explanation:Noble gas is because the helium is BETTER brodiar of CONSERVING the electron process of conservation.Noble gas is cladial form .Hope it is helpfulplease mark me as brainlaist
4438.

The molecules move only within the boundary of ______. 1) Solids 2) Liquids 3) Gases 4) None of these

Answer» TION:solidplease MARK me at BRAINLIST
4439.

Define the term silt

Answer» SAND, soil or mud that COLLECTS at the SIDES or on the BOTTOM of a RIVER.
4440.

Rust is the compound______​

Answer» RUST is the compound of iron. THANKS me and MARK me as BRAINLIST.
4441.

Calculate mass of hydrogen gas produced when 80g of ammonia is heated​

Answer»

(10×22.4L=224L). Explanation: Simply, the REACTION is N2+3H2=2NH3 140g N2 means 14028=5 mol; 30g H2 means 302=15 mol.Mark me as BRAINLIEST...plzzzhope u like my answer..

4442.

State three characteristics of water to justify that it is a compound​

Answer» HOPE it HELPS you..........
4443.

Calculate volume of co2 gas formed at STT by keeping 25g of caco3​

Answer» SORRY I can't UNDERSTAND your QUESTION
4444.

List 2-3 properties of liquids & gas which are similar in both cases? No spam Irrelavent answer reported

Answer»

Thank meMark me BrainliestFollow meExplanation:Liquids and gases are similar in both shape and VOLUME because they both have its' shape DETERMINED by its' surroundings. ⟹ Both diffuses and TAKE the shape of containers.

4445.

Isoelectronic species and give examples​

Answer»

not ANSWER vdghjbfffdfghju

4446.

Please tell monomer and polymer of polyster, nylon and polyvinyl chloride​

Answer»

terephthalic acid = POLYESTERadipic acid and HEXAMETHYLENE DIAMINE = NYLONvinyl chloride MONOMER= POLYVINYL CHLORIDEExplanation:

4447.

List 2-3 properties of liquids & gas which are similar in both cases? No spamIrrelavent answer reported

Answer»

i) both FLOW easilyii)both cannot TRANSFER tension forceiii) both PARTICLES can move freely

4448.

draw a neat diagram of the following A filtration B evaporation C sedimentation and decantation D winnowing and seiving​

Answer» TION:PLS MAKE me as BRAINLIEST
4449.

What is the synonym of condensation ??

Answer» E is SYNONYM of CONDENSATION MARK as BRILLIANT
4450.

Explain chromatography in brief​

Answer»

chromatography?Chromatography is a separation process involved in to separate different solutes dissolved in a same solvent.The coloured components that is more soluble in water will rise faster. With new advancement in technology newer techniques of chromatography have been developed. Applications of chromatography -To seperate colours in a dye.Pigments from natural colours.Drugs from blood.Understand it with an activity -Let's perform an activity to understand it BETTER!Materials required!Filter paper Pencil Brown sketch penGlass with water An empty jar or glass Procedure -Take a small strip of filter paper and DRAW a LINE on the bottom of the filter paper but leave some space too. And put a small dot of brown sketch pen.Take an empty jar or a glass and fill it with water but very less water. Then hang the filter paper on that had or glass with with water, make sure that the water is below the marked line.Keep the jar or glass undisturbed at one PLACE. After some time you will see that water will be gradually rising up and and colours are getting sperated.Blue,red and orange will get sperated.________________________________