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Answer:

2NH3 + 5/2 O2 ••••••••> 2NO + 3H2O

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ANSWER:

SO3 is FORMULA of SODIUM OXIDE

ANSWER:

NOTATION for sub-shells of M shell are 3s, 3P and 3d

Explanation:

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ANSWER:

the reaction in which chemical properties are changed LIKE change in COLOUR taste or MANY etc

it is called chemical reaction

Answer:

When the PHOSPHIDE ION forms, the PHOSPHORUS atom GAINS three electrons. Thus, the electron CONFIGURATION becomes  

[

Ne

]

3

s

2

3

p

6

because the phosphorus atom gains three electrons that are added to the  

3

p

subshell.

Explanation:

Answer:

initial CONDITIONS :- T1 = 298 K ; P1 = 100 cm ; V1 = 80 mlfinal conditions :- T2 =198 K V2 = 160 ml P1V1=P2V2 [Boyle's Law]⇒(100cm)(80)=P2(160)⇒P2 = 50 cm of Hg.

Explanation:

Sodium metal REACTS rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The REACTION is exothermic. During the reaction, the sodium metal MAY well become so HOT that it catches fire and BURNS with a characteristic orange colour. The reaction is slower than that of potassium (immediately below sodium in the periodic table), but faster than that of lithium (immediately above sodium in the periodic table).

2Na(s) + 2H2O → 2NaOH(aq) + H2(g)

Reactions occur when two reactant MOLECULES effectively COLLIDE, each having MINIMUM energy and correct ORIENTATION. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

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ANSWER:

The formula mass of a substance is the sum of the average ATOMIC masses of each atom represented in the CHEMICAL formula and is expressed in atomic mass UNITS. The formula mass of a covalent compound is also called the molecular mass. ... The mass in grams of 1 mole of substance is its MOLAR mass.

Answer:

It is gas

Explanation:

It is because they have less FORCE of ATTRACTION between its CONSTITUENTS and it is not tightly PACKED

◦ ❖ ◦ ━━━━━━━━━━ ◦ ❖ ◦ ━━━━━━━━ ◦ ❖ ◦

The number of PROTONS present in the nucleus of an ATOM, DETERMINES the atomic number of that ELEMENT.

Synthetic fibres have many advantages over natural fibres:  

Synthetic fibres do not depend either on an agricultural crop as COTTON, flax and jute do, or on animal farming as...

The fabrics made of synthetic fibres like polyester and nylon are EASILY heat-set, i.e., they retain the fold or...

Synthetic fibres are MUCH stronger, and hence more durable than natural fibres. They dry easily and have faster...

Synthetic fibres are not easily ACTED upon by moisture, chemicals or BACTERIA.

Answer:

which TYPE of formula ...

organic chemistry or inorganic chemistry...

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EXPLANATION:

We USE ammonia as FERTILIZERS

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ANSWER:

EXPAND on heating

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ANSWER:

o.25

Explanation:

No.of MOLES =  molarwt/givenwt

​Molar weight of N  2   = 28G

Thus no. of moles =  7/28   = 0.25

ANSWER:

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BAKING soda HELP TREAT heartburn , soothen canker sores and even whiten your teeth ....

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ANSWER:

ok

Explanation:

1metre = 1000mm

4900metre = 4900 × 1000 = 4900000mm

ANSWER:

where is the BLANK where we have to FILL the WORDS

EXPLANATION:

ALCOHOL and WATER-simple distillation

chalk and water -chromatography

cream and milk-centrifugation

oil and water-separating funnel

Salt from seawater-sublimation

Answer:

WAIT

Explanation:

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ANSWER:

thik SE likho question SAMJH NAHI AAYA

ANSWER:

CATION

FORMS POSITIVE IONS

ANSWER:

Yo Yo Yo

This is M J

Explanation:

The Sun is Earth's MAIN SOURCE of energy, making the development of solar power a natural choice for an alternative energy source.

Answer:

85%

Explanation:

85%

Answer:

DISPLACEMENT reaction.

Explanation:

we can see that naoh has changed into nacl.

hcl has turned into h2o.

actually this is double displacement reaction combined with OXIDATION reaction.

but according to the options GIVEN by you it is displacement reaction.

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Answer:

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ANSWER:

of

making YARN from food FIBRES?

And what they are ?

using

hand spindle

- BA

using charald

BE

and twisting

drawing FIATRES from cotton

By arranging

two sets of yarns

By wearing

Vi By knitting

@ By

(v

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G) An ORGANIC COMPOUND has the

percentage Composition

Courboozy Hydrogen2:21 Oggen.

Comparadite

ANSWER:

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Explanation:

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ANSWER:

The GOAL is not to be RICH the Goal is to be LEGEND.

Physical changes only change the appearance of a SUBSTANCE, not its CHEMICAL COMPOSITION. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

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Answer:

SPINNING, in textiles, process of DRAWING out fibres from a mass and TWISTING them together to form a continuous thread or yarn.

ANSWER:

PRODUCT is the CORRECT answer.

ANSWER:

PLEASE REFER the ATTACHMENT

SOIL EROSION is a naturally occurring PROCESS that AFFECTS all landforms.

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Answer

Once you start COMPETING in dog showing it can become ADDICTIVE. Shows are held all over the country, giving you opportunities to compete regularly and meet like-minded people.

Finding a show

A full list of open, LIMITED, premier and championship shows can be found on Find a Show.

Special events

Below are a number of special events which are held at The Kennel Club's championship shows throughout the year.

Awards you can achieve

Once you have started competing there are a number of awards you can achieve.

Competing in Europe

The Pet Travel Scheme allows dogs and cats from certain countries to enter, or re-enter, the United Kingdom without quarantine as long as they comply with the requirements of the Department of Environment, Food and Rural Affairs (Defra). This scheme has made it easier for UK exhibitors to compete overseas and a number of enthusiasts have already done so.

Liaison councils

The dog showing community is lucky to have TWO liaison councils. The first is the Breeds Liaison Council and the second is the Shows Liaison Council. The councils are a key channel for you to make positive changes to the dog showing world.

Answer:

Types of Natural Resources:

Renewable Resources: These are resources such as air, water, and SUNLIGHT that refill naturally.

Non-Renewable Resources: These are resources like fossil fuels and minerals that do not restock reform very slowly.

Biotic: These originate from living beings and organic material like plants and animals.

Abiotic: These come from non-living things and non-organic material. These comprise air, water, and land as well as metals like iron, copper, and silver.

Natural resources are also categories such as actual resources, reserve resources, stock resources and potential resources based on their development stage.

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How to Conserve Nature and Its Resources?

Many of the natural resources are being used at a faster rate as compared to their speed of production. There is so a necessity for conservation of nature and the natural resources it offers. Here are some of the ways in which these resources can be conserved:

Reduce Water Consumption

Water is available in abundance on Earth. This is one of the reasons people do not consider much before using it. However, if we keep using it at this speed. In the future, we may not be left with as much of it. Therefore, SIMPLE things such as turn off the tap while brushing or reuse the leftover water to water the plants can help in this direction.

Reduce Usage of Electricity

Use only as much energy as you REQUIRE. It is THUS advised to limit the usage of electricity. Simple habits such as turning off the lights before parting your room, turn off the electric appliances after use. Switching to energy-saving fluorescent or LED bulbs can make a change.

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Explanation:

12th

Chemistry

General PRINCIPLES and PROCESSES of ISOLATION of Elements

Occurrence of Metals

Which of the FOLLOWING mixt...

CHEMISTRY

Which of the following mixture can be separated by magnetic separation?

MEDIUM

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ANSWER

ANSWER:

...................

Aluminum and aluminum COMPOSITE materials are used on spacecraft. Aluminum is LIGHT but also very STURDY. Using titanium alloys can also strengthen the body

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ANSWER:

NA

Explanation:

the Latin NAME is NATRIUM from which Na is derived

EXPLANATION:

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Answer:

EXPLANATION:

The basic concept is, when the stones are RUBBED, friction takes place. The friction produces heat/sparks. but, Stone pieces are composed of small pieces of rocks and clay. So it does not have organic MATTER in it to burn in presence of air. HENCE, it  is a non COMBUSTIBLE.

Explanation:

Step 1: Tally the number of ATOMS based on subscript.

F

e

+

O

2

→

F

e

2

O

3

(unbalanced)

left side: Fe = 1; O = 2

right side: Fe = 2; O = 3

Step 2: Start balancing the simple molecules first, in this case the

O

2

F

e

+

3

O

2

→

F

e

2

O

3

left side: Fe = 1; O = 2 x

3

= 6

right side: Fe = 2; O = 3

Since there are now 6

O

atoms on the left, there must also be 6

O

atoms on the right. Notice that the right hand is one big molecule so whatever COEFFICIENT you would use to balance the

O

atoms, you would also need to apply to the bonded

F

e

atom.

F

e

+

3

O

2

→

2

F

e

2

O

3

left side: Fe = 1; O = 2 x 3 = 6

right side: Fe = 2 x

2

= 4; O = 3 x

2

= 6

Step 3: Now balance the rest of the equation.

4

F

e

+

3

O

2

→

2

F

e

2

O

3

left side: Fe = 1 x

4

= 4; O = 2 x 3 = 6

right side: Fe = 2 x 2 = 4; O = 3 x 2 = 6

The equation is now balanced.

Answer:

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Explanation:

Sodium

Sodium is an alkali metal and is so SOFT that it can be EASILY CUT by knife.

Answer:

Chemical CHANGE .

it is ACCOMPANIED by SOUND, gas, LIGHT, and ASH

Answer:

FALSE....

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