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2501.

What can we infer from the symbolic representation of hydrogen 1/1H?​

Answer» ONG>ANSWER:

SYMBOLIC representation of Hydrogen is (H2)

Explanation:

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2502.

D. Fill up the blanks with the correct choice given in brackets. 1. Atoms have a centrally placed nucleus and an extra nuclear part in which the (electron/proton) revolves.2. Atomic number is represented by(A/Z) and mass number is represented by(A/Z).3. The first shell (or K shell) can have a maximum of(2/8) electrons, and thesecond shell (or L shell) can have a maximum of ...(8/18) electrons.4. Particles with positive charge are known as .. .....(anions/cations).5. 2,8,8,2 is the electronic configuration of(calcium/potassium) and has (20/40) protons present in its nucleus.​

Answer» ONG>ANSWER:

a

b

c

d

e

Explanation:

scyycuvvexuv

vrvkkcev

uctfob

2503.

The photograph below shows a carved lime stone head. The surface of the limestone have changed over many years.1.Which process made the surface of the lime stone change over many years?2.Write a word equation for the change that has occurred.

Answer» ONG>ANSWER:

DUE to presence of CO2 in atmosphere

Explanation:

because CO2 react with limestone

2504.

Choose the correct answer from the options given below. 1. What can we infer from the symbolic representation of hydrogen. IH?a. Hydrogen has 1 electronc. Hydrogen has 0 neutrons.b. Hydrogen has 1 proton.d. All of these2. What is the total number of protons and neutrons present in an atom of an elementknown as?a. Atomic number b. Atomic shell c. Mass number d. Isotope3. What was observed about most of the a-particles during Rutherford's gold foil experiment?They passed undeflected through the foil. b. They were deflected by small angles.c. They were deflected by large angles. d. They rebounded their path completely.4. What is 1 amu equal to?a. Mass of 1 hydrogen atomb. 1/12th the mass of C-12 atomc. 1/12th the mass of O-16 atomd. 1/16th the mass of 0-16 atom5. Which is the valence shell of oxygen?a. K shellb. L shellC. M shelld. N shell​

Answer»

ong>ANSWER:

OH...GOD what a BIG question..

how can answer these

2505.

Explain Brownian Motion with the Tyndall's effect. please answer the questionanswer the question I will mark the brainliest answer​

Answer» ONG>Answer:

Tyndall effect. Brownian Motion. MEANING. The phenomenon of scattering of light like a light beam that PASSES through a fluid (COLLOIDS) is known as the Tyndall effect. The random movement of particles in a fluid (colloids) is the Brownian motion, and it OCCURS due to the collisions of the particles

2506.

Give one word or a phrase for the following statements. 1. A bond formed by the transfer of electrons2. A bond formed by the sharing of electrons3. The dense, positively charged centre of an atom4. The outermost shell of an atom of an element5. The total number of protons present in an atom of an element​

Answer»

ong>Answer:

1) ionic bond

2) COVALENT bond

3) nucleus

4) VALENCE shell

5) atomic number

2507.

Q5:- what is tincture of Iodine ? please answer the questionanswer the question I will mark the brainliest answer​

Answer»

ong>Answer:

Tincture of iodine, iodine tincture, or weak iodine SOLUTION is an antiseptic. It is usually 2–7% ELEMENTAL iodine, ALONG with potassium IODIDE or sodium iodide, dissolved in a mixture of ethanol and WATER. Tincture solutions are characterized by the presence of alcohol.

Explanation:

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2508.

Examples of deciding base.​

Answer»

ong>Answer:

A decision support system (DSS) is an information system that supports business or organizational decision-making activities. DSSs SERVE the management, operations and planning levels of an organization (usually mid and higher management) and help people make decisions about PROBLEMS that may be rapidly CHANGING and not easily specified in advance—i.e. unstructured and semi-structured decision problems. Decision support systems can be either fully computerized or human-powered, or a combination of both.

While academics have perceived DSS as a tool to support decision making processes, DSS users see DSS as a tool to facilitate organizational processes.[1] Some authors have extended the definition of DSS to include any system that might support decision making and some DSS include a decision-making software component; Sprague (1980)[2] defines a properly termed DSS as follows:

DSS tends to be AIMED at the less well structured, underspecified problem that upper level managers typically face;

DSS attempts to combine the use of models or analytic techniques with traditional data access and retrieval functions;

DSS specifically focuses on features which make them easy to use by non-computer-proficient people in an interactive mode; and

DSS emphasizes flexibility and adaptability to accommodate changes in the environment and the decision making approach of the user.

DSSs include knowledge-based systems

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2509.

Namaste in french tell the answer

Answer» ONG>ANSWER:

Salut. is the meaning

hope U GOT answer...

2510.

What would happen when firework explode. Is it a chemical change or a physical change.

Answer»

ong>Answer:

The EXPLOSION of fireworks is an example of chemical CHANGE. During a chemical change, substances are changed into different substances. Another words, the COMPOSITION of the substance changes.

hope it helps you

2511.

What is chemical bond? Explain with examples.​

Answer» ONG>ANSWER:

A chemical bond is an attractive force between atoms that cause multiple atoms to come together in a specific pattern to FORM compounds. ... Examples of Chemical BONDS: 1. Single covalent bonds form when only one pair of electrons are shared between atoms. This is very common with elements that are non-metallic.

hope it helps you

2512.

5. Nature of metal oxide is: b. Basic b) Acidicc) Neutral d) None of these 6. Non- metal, solution of which is used as an antiseptic onwounds.a. Potassium Dichromate b) Potassium permanganatec) Sodium chloride d) Copper Sulphate7. Name the following type of reaction :-Copper sulphate (CuSo4) + Zinc (Zn) = Zinc Sulphate (Znso4) + Cu (Copper)(Displacement / addition)8. Write any three differences between metals and non-metals on thebasis of following characters -Property Metal Non-Metal1) Appearance2) Conduction of heat3) Malleability4) Ductility 9. Write one word for the following:i) Materials having properties of both metalsand non-metals .ii) The property of metals due to which they produce sound .iii) The property of metals due to which they can be beaten into sheets .iv) Nature of metal oxides is .v) Thepropertyofmetalsby virtue ofwhichtheycanbedrawnintowires . 10. Answer the following questions: 1. What are the elements called which can neither fit with metals nor non-metals? ________________________________________________________________________________________ 2. Which of the following metals is the best conductor of heat and electricity? Gold, Silver, Copper, Aluminum 3. Which property of metals makes them useful as ringing bells? _______________________________________________________________________________________ 4. Arrange the following elements in order of increasing reactivity. Sodium, Magnesium, Copper, Zinc, AluminumPlz tell anyone i will mark brainliest and give 21 points.​

Answer»

ong>Answer:

Answer of 2nd QUESTION is COPPER

Answer of 9th question

  1. metaloids
  2. sonority
  3. Ductility
  4. I don't know
  5. MALLEABILITY

Explanation:

Copper is used for making ELECTRIC WIRES

2513.

Write about the contribution in the field of chemistry of Jacob Berzelius​

Answer»

>

Jons Jacob Berzelius was a Swedish chemist born on AUGUST 20, 1779 – DIED on August 07, 1848. Berzelius was best known for his determination of atomic weights, chemical notation, ISOLATION and discovery of silicon, selenium, thorium and cerium periodic table elements. He is known as "the Father of Swedish Chemistry".

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2514.

3. The main gases, that trap the solar heat radiations after their reflection fromthe earth, are- 1)methane, carbon monoxide, chlorofluorocarbon2) carbon dioxide, methane, water vapours3) carbon monoxide, nitrogen dioxide and chlorofluorocarbons, water vapours4) carbon monoxide, methane, nitrogen dioxide, water vapours.Which option is correct ..... plz tell.​

Answer»

is your answer : _

The MAIN GASES, that trap the solar HEAT radiations after their reflection from

the earth, are-

1)METHANE, carbon monoxide, chlorofluorocarbon

2515.

Write about the contribution in the field of chemistry of Amedeo Avogadro​

Answer»

ong>Answer:

Amedeo Avogadro is BEST KNOWN for his hypothesis that equal volumes of different gases contain an equal number of molecules, provided they are at the same temperature and pressure. ... Avogadro was ALSO the first scientist to realize that elements COULD exist in the form of molecules rather than as individual atoms.

2516.

The correct order of N-compounds in its decreasing order of oxidation states is ___________.​

Answer»

ong>Answer:

HNO3, NH4CL, NO, N. HNO3, NO,NH4Cl

Explanation:

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2517.

1) a) Name two factors which influence the state of matter. b) How is the atomic number and mass number related to the number of electrons and protons inside an atom​

Answer»

essure and TEMPERATURE

2.

2518.

How are mountains useful to us?​

Answer»

tains play a SIGNIFICANT role in providing WATER and food supply to the millions of people in the world. Mountains COVER around 22 percent of the surface of the earth and 13 percent of the world's population live in the mountains. ... Mountains offer 60-80 percent of the world's FRESHWATER.

2519.

The formulae of sodium chlorideव्हिच ऑफ द फॉलोइंग इस मिक्सचर ​

Answer»

ong>ANSWER:

the formulae of sodium CHLORIDE is NACL

2520.

Which technique is used in separation of sand and water without using a filter paper​

Answer» ONG>Answer:

we cannot separate SAND and water without a FILTER PAPER...

2521.

1. Classify the following substances into acidic and basic substances. Tomato juice, soap solution, toothpaste, lemon juice, vinegar? ​

Answer» ONG>ANSWER:

BASIC

acidic

acidic

basic

acidic

2522.

God exists or not?best answer will ne marked as brainliest!​

Answer»

is PRESENT EVERYWHERE.

2523.

(FeSO4) what will be the valency of it?​

Answer» ONG>ANSWER:

valency of iron can 2 or 3

2524.

Which government organization is associated with petroleum?​

Answer» ONG>ANSWER:

tamil NADU GOVERNMENT

2525.

What is the meaning chemical bonding​

Answer» ONG>Explanation:

Chemical Bonding refers to the formation of a chemical bond between two or more atoms, MOLECULES, or ions to GIVE rise to a chemical compound. These chemical bonds are what keep the atoms together in the resulting compound.

2526.

1) Electronic configuration of an atom ‘X’ is (2,8,8,1). It combines with another atom Y having electronic configuration (2,8,7): [3]i) What type of bond will be formed between X and Y?ii) Which atom is metal and which one is non-metal?iii) Write the formula of the compound formed.​

Answer» ONG>ANSWER:

i) IONIC bond

ii) X is metal and Y non metal

iii) XY

2527.

Answer needed please and i will mark u brainliest​

Answer»

ong>Explanation:

Name of the reactant

1.sodium

2.water

formula of the reactant

1. Na+

2.H2O

Name of the products

1.sodium hydroxide

2.hydrogen

Formula of the products

1. NaOH

2.H2

Word equation of the reaction

sodium+hydrogen ------->sodium hydroxide +hydrogen

Balanced CHEMICAL equation of the reaction

2Na + 2H2O -------> 2NaOH + H2

type of reaction

SINGLE replacement

hopefully this will HELP

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2528.

What is meant by atmosphere ?​

Answer»

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An ATMOSPHERE is a layer or a set of layers of gases SURROUNDING a PLANET or other material body, that is HELD in place by the gravity of that body.The atmosphere is the blanket of gases which surrounds Earth.

_____________________________

2529.

Answer need please :D​

Answer» ONG>ANSWER:

ਤੁਹਾਨੂੰ ਖੂਨੀ ਕੁਤੇ ਨੂੰ ਬੰਦ

Explanation:

2530.

Is human growing a physical change or a chemical change, Explain in short why is it ?

Answer» ONG>ANSWER:

Human growth is chemical change

Explanation:

Because chemical change are irreversible, human growth is irreversible.

An adult can't go back to a CHILD.

2531.

Metals are solids at ______ temperature, except murcury, which is liquid at which temperature. PLEASE ANYONE HELP ME

Answer»

ong>Answer:

room

Explanation:

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2532.

Balancing of= iron III oxide + carbon monoxide = iron + carbon dioxide whoever will answer this correctly, will get a brilliant badge and thanks!!!!​

Answer»

ong>Answer:

ss gate of a circular road to the base to see if you are not FILTERED into the diameter a TV SHOW that can be used to be

2533.

9:16 Monday, 21 SeptembernownowWA BUSINESSMona7 NotificationsOm agoanaliaWA BUSINESSPrince Dingra Kawaaria4 NotificationsWA BUSINESSGurpriye Chandigarh Panchkulle Whole2 Notifications10mFACEBOOKNotificationMESSAGESAD-CSERNIKText MessageundeakSETTINGSSweden​

Answer» ONG>ANSWER:

HELLO guys and good NIGHT

2534.

Metals are solids at which temperature PLEASE CAN ANYONE HELP ME

Answer»

ong>Answer:

The metals are solid at ROOM TEMPERATURE

Explanation:

Because the atoms of solids are compactly ARRANGED with each other and it provides rigidity to the metals

2535.

Which is the purest form of carbon? ​

Answer»

>

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.

.

The purest form of carbon is diamond. Graphite was first converted into diamond in the year 1955 in the presence of catalysts such as iron, cobalt, chromium, or manganese. Diamond is CONSIDERED to be the purest form of carbon because the COMPOSITION of the diamond is homogeneous and is consistent throughout.

2536.

Give the skeletal equation for= Copper + sulphuric acid = copper II sulphate + water + sulphur dioxide​

Answer»

ong>ANSWER:

Hey MATE!!! Here is ur answer.

Explanation:

<U>Cu + H2SO4 → CuSO4 + H2O + SO2

Hope It Helps U

2537.

PLEASE ANSWERE THESE QUESTIONS​

Answer»

ong>Answer:

1. Amoebiasis, Cholera

2.Evaporation, Transportation

3. surface run off harvesting, ROOFTOP rainwater harvesting

4. RAIN water, surface water

5.anxiety, DEPRESSION

6.cyclones, flood

Explanation:

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2538.

Balance =Copper + sulphuric acid = copper II sulphate + water + sulphur dioxide​

Answer» ONG>ANSWER:

YES it is balanced

BYE bye

2539.

Question:- During a chemical reaction Between two elements, a new product is formed A+B ----> AB^2Describe how A, B are different from AB^2 .please answer the question answer the question I will mark it brainliest answer​

Answer»

ong>Answer:

A and B ' s chemical composition and chemical and PHYSICAL properties are COMPLETELY different from ABg

Explanation:

Because its a chemical CHANGE

2540.

Balance = iron III chloride + water + sulphur dioxide = iron II chloride + sulphuric acid + hydrochloric acid​

Answer»

l3 + 2H2O + SO2 → 2FECL2 + H2SO4 + 2HCl

I HOPE it will HELP you

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2541.

PLEASE ANSWEREUNUSAL ANSWERE WILL BE REPRTED​

Answer»

ong>ANSWER:

d. BUILDING concrete road

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2542.

The process of conversion of solid into gas is called vaporization. true or false.​

Answer» ONG>ANSWER:

true

Explanation:

I HOPE it helps you

2543.

PLEASE ANSWERE UNUSAL ANSWERE WILL BE REPRTED................​

Answer»

ong>Explanation:

c is the correct ANSWER..

both EVAPORATION and CONDENSATION..

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thanks to mark as brainlist answer

2544.

iron III chloride + water + sulphur dioxide = iron II chloride + sulphuric acid + hydrochloric acid balancing​

Answer» ONG>ANSWER:

What is your QUESTION MATE??

2545.

Iron III chloride + water + sulphur dioxide = iron II chloride + sulphuric acid + hydrochloric acid​

Answer»

ong>Explanation:

iron III chloride + water + sulphur dioxide = iron II chloride + sulphuric acid + hydrochloric acid

can you please writing NUMERICAL form

I am UNABLE to UNDERSTAND

2546.

28. The Ganga Brahmaputra Plain of India is an overpopulated region because... a) Land is very fertileb) Flat land c) suitable for cultivation d) All the above​

Answer» ONG>ANSWER:

Ganga Brahmaputra PLAIN of INDIA is an overpopulated region because land is fertile , flat. land , SUITABLE for cultivation

2547.

What are the products for incomplete combustion.​

Answer» ONG>Answer:

Discovered in QUESTION 24is an oderless, colorless, and dangerous GAS called carbon MONOXIDE..

2548.

CO and H, both bums in air in blue flame. How would you differentiate?​

Answer» ONG>Answer:

HYDROGEN BURNS with a pop SOUND

Explanation:

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2549.

In 2011 who won the world cup​

Answer»

ong>Answer:

INDIA national cricket team

Thank you

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2550.

A sample was weighted using two different balances. The results were (i) 3.929 g (ii) 4.0 g. How would the weight ofthe sample be reported. If it has to be reported in 3significant no(a) 3.929 g(b) 3 g(c) 3.9 g(d) 3.93 g​

Answer» ONG>ANSWER:

d 3.93 is CORRECT answer