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Answer:

500000000000000/2000000000/30000000/4000/8000000

Answer:

The salt is NaOh and its molar mass can be calculated as follows :

Na(23) + O(16) + H(1) = 23 + 16 +1 = 40

it is CLEAR that X is sodium, why is hydroxide and Z is HYDROGEN. Thec reaction can be shown by following equation:

2Na +2H^2O = 2NaoH + H^2 + Heat

Explanation:

hydrogen is highly inflammable gas and hence it easily catches fire .

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Answer:

Rust is an iron oxide, a usually reddish brown oxide formed by the reaction of iron and OXYGEN in the presence of water or air MOISTURE rusting is the common term for CORROSION of iron and its alloys, such as steel. MANY other metals undergo similar corrosion, but the resulting oxides are not COMMONLY called rust.

ANSWER:

K +1

Ca +2

Sc

TI

V

Cr

Mn

Fe

Co

Ni

Cu

Zn

Answer:

the DILUTION of a acid is always EXOTHERMIC reaction

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there are INFINITE NUMBER of RATIONAL NUMBERS

Your answer:

Chlorido TETRA hydroxido O- NITRITO CHROMIUM (III) CHLORIDE

Answer:

The Balmer series, or Balmer lines in atomic PHYSICS, is one of a SET of six named series DESCRIBING the spectral LINE emissions of the hydrogen atom. The Balmer series is calculated using the Balmer formula, an empirical equation discovered by Johann Balmer in 1885.

Explanation:

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EXPLANATION:

E/m value of positive RAYS is maximum for : a) Hydrogen b) HELIUM C) oxygen d) Nitrogen

Answer:

EXPLANATION:

CH3 CH2 + naoh

gives 2CH3+NaO

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Thank you

EXPLANATION:

I HOPE U UNDERSTAND this BETTER

CURD, lemon JUICE, orange juice and vinegar TASTE sour. These substances taste sour because they CONTAIN acids. ... It is bitter in taste.

Explanation:

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For example, when TWO CHLORINE ATOMS, each with 7 valence electrons, come together to form a DIATOMIC chlorine molecule, the Lewis structure shows that there will be a SHARING of two electrons between the two chlorine atoms which allows both chlorine to be surrounded by 8 electrons.

ANSWER:

For example, when TWO chlorine atoms, each with 7 valence electrons, come TOGETHER to form a DIATOMIC chlorine molecule, the Lewis structure shows that there will be a sharing of two electrons between the two chlorine atoms which allows both chlorine to be surrounded by 8 electrons.

Answer:

CHEMISTRY

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Asked on December 20, 2019 by

Sumon Abhista

Calculate the volume of ammonia gas produced at STP when 140 g of nitrogen gas reacts with 30 g hydrogen gas.

(Atomic MASS: N=14 u, H=1 u)

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Study later

ANSWER

N

2

+3H

2

⟶2NH

3

Number of MOLES of N

2

in 140G=

28

140g

=5 moles of N

2

Number of moles of H

2

in 30g=

2

30

=15 moles of H

2

moles N

2

+3H

2

⟶2NH

3

at t=0 5 15 -

after reaction 5−5×1 15−3×5 2×5

Thus 10 moles of NH

3

produced after reaction

as number of moles=

volume at STP

volume of product

⇒10=

22.4L

V

⇒V=224L

Thus 224L of ammonia is produced.

ANSWER:

no

EXPLANATION:

no

Explanation:

step 1

Divide the given percentages of atoms with their MOLECULAR masses

H---4.07/1 =4.07

C---24.27/12 =2.02

Cl--71.65/35.5=2.01

step 2

divide all VALUES with the lowest value OBTAINED.

H---4.07/2.01=2

C---2.02/2.01=1

Cl---2.01/2.01=1

THEREFORE the EMPIRICAL formula is

CH

2

Cl

WEIGHT OF EMPIRICAL FORMULA=12+2+35.5=49.5

Given molecular weight =98.96 which is double of empirical weight .therefore molecular formula is C

2H4Cl2

.

ANSWER:

OPTION A ---  10.10

Answer:

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Answer:

Explanation:

Atomicity is the amount of atoms an ELEMENT HOLDS in its MOLECULE, such as:

1 ATOMIC MOLECULES: Helium, Neon, Krypton, all the Inert Gases etc.

Diatomic Molecules: Hydrogen, Oxygen, etc.

Triatomic Molecules: Ozone.

Octoatomic Molecules: Sulphur

ANSWER:

HMM

first Mark me add BRILLIANT definitely answer your question #layagiddi

ANSWER:

no

no

Explanation:

nojsjdjjsjdjdjshhdjdinbsjsjshkqojadhhdoshsbyksjsjdbdn

When you mix acid with water, it's extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing HEAT, sometimes boiling the liquid. If you add acid to water, the water is UNLIKELY to splash up, HOWEVER, even if it did, it's less LIKELY to cause injuries than if you make the mistake of adding water to acid. When you add water to acid, the water boils and the acid MAY splatter and splash!

ANSWER:

Radical, also CALLED Free Radical, in CHEMISTRY, molecule that contains at least one unpaired electron. Most molecules contain even numbers of electrons, and the covalent chemical bonds holding the atoms together within a molecule normally CONSIST of pairs of electrons jointly shared by the atoms linked by the bond.

Explanation:

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MANOMETER

manometerA manometer can be USED to MEASURE the pressure of a gas. The (difference in) height between the liquid levels (H) is a measure of the pressure. Mercury is usually used because of its LARGE density.

Answer:

Balancing of a Chemical equation is based on the Principle of ATOM CONSERVATION (POAC) which states that the total number of atoms of each element in reactants MUST equal the number of atoms of that element in PRODUCTS. It is a derivation of law of Mass Conservation.

Explanation:

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ANSWER:

not POSSIBLE to GET because OPTIONS are not there

Answer:

खोज परिणाम

वेब के चुनिंदा स्निपेट

= N A = 6.022140857 ( 74 ) × 10 23 . nitrogen atoms in such a molar quantity of nitric oxide, APPROX. 1.5 × 10 23 INDIVIDUAL nitrogen atoms.

ANSWER:

WOODWORK tee am tell reject TILL H FB event time your eye were

Explanation:

For example, when a pot of water is kept BOILING, the temperature remains at 100 °C (212 °F) until the last drop evaporates, because all the heat being ADDED to the liquid is absorbed as latent heat of vaporization and CARRIED AWAY by the ESCAPING vapour molecules.

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ANSWER:

MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM

ANSWER:

?????????????

QUESTION is not CLEAR at all

Answer:

The acids in plaque dissolve the enamel surface of the teeth, creating HOLES in the teeth called cavities. To prevent tooth DECAY: Brush your teeth at least TWICE a day with a fluoride-containing toothpaste. Preferably, brush after each meal and especially before going to BED.

Explanation:

AVAILABLE in the SOIL ,during DAY , AIR, & plant .

ANSWER:

SIMPLEST EXAMPLE is C2H4

FURTHER:

HOPE it HELPS

____________________________________________________________

Question:

Na=14.31% ,S =9.97% , O=69.50% , H=6.22% . Calculate the molecular formula of compound assuming that the whole of hydrogen in the compound is PRESENT as water of crystallization . Molecular mass of compound is 322. (related to empirical formula)

__________________________________________________________

Answer:

Take the approximate ratio between the PERCENTAGE composition and the MOLAR mass of the elements given

Element  mass % Atomic mass  mass percent/Atomic mass  ratio  

Na        14.31    23                          0.622                                    2

S        9.97            32                          0.311                                    1

H        6.22             1                                  6.22                                   20

O        69.5             16                          4.34                                   14

Empirical formula is therefore Na₂SH₂₀O₁₄​  

Empirical mass = (2×23) + (32 )+ (20×1) + (14×16) =322g

Given:

Molecular mass = 322 g

∴ molecular formula = empirical formula = Na₂SH₂₀O₁₄​  

Given that all the hydrogen in the compound is reset in combination with oxygen as water of crystallisation

If water of crystallization are nH₂O​  

Then, 2n = 20

or n=10

Crystallized water is 10H₂O

therefore, the molecule is Na₂SO₄​. 10H₂O

__________________________________________________________

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Answer:

1. Balance the following equations by Hit and Trial Method

(O) SO2 + H2S->S+H2O

(II) A1_C3 + H2O -> Al(OH)3 + CH,

(ui) KMnO4 + HCI - KCI + MnCl2 + H2O + CI,

(iv) KMnO4 + KOH-KMnO4 + MnO2 + O2

(v) FeS2 + 02 - Fe2O3 + SO,

(vi) Zn + NaOH-Na ZnO2 + H2

(vii) Na S,O3 + 2 Na S,06 + Nal

(viii) C2H6 + 02 CO2 + H2O

(IX) CA P2 + H2O -Ca(OH)2 + PH3

Swarts reaction is generally used to get alkyl fluorides from alkyl CHLORIDES or alkyl bromides. The Swarts reaction mechanism is quite SIMPLE – the metal fluorine bond is broken and a new bond is formed between CARBON and fluorine. ... The DISPLACED chlorine or bromine atoms now bond with the metal.

Answer:

12

Explanation:

because it will be a SCIENTIFIC RESEARCH

QUESTION:

What happens when Aluminum (Al) REACTS with Sodium HYDROXIDE (NaOH). Also WRITE it's chemical reaction​

__________________________________________________________

Answer:

2Al + 2NAOH + 2 H₂O → 2NaAlO₂ + 3H₂

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Answer:

Explanation:

◆ Answer - (b)

1-Chloropropane on treatment with alc. KOH produces PROPENE.

● Explanation -

When 1-chloropropane (CH3-CH2-CH2-Cl) is TREATED with alc.KOH, it undergoes dehydrohalogenation to give propene (CH3-CH=CH2).

CH3-CH2-CH2-Cl + alc.KOH --> CH3-CH=CH2 + KCL + H2O

KCl and H2O are formed as byproducts.

Explanation:

Adding water to an acid or base will CHANGE its pH. Water is MOSTLY water molecules so adding water to an acid or base REDUCES the CONCENTRATION of ions in the solution. When an acidic solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases towards 7.

Answer:

I THINK that you want to ask the STANDARD FORM of 7.63x10^-3

=> 763 x 10^-5

ANSWER:

Y -SO2 because it is X is less than stable oxides

Answer:

Elephantiasis refers to a parasitic infection that causes extreme swelling in the arms and legs. The disease is caused by the filarial worm, which is transmitted form human to human via the female MOSQUITO, when it takes a blood meal. The parasite grows into an adult worm that LIVES in the lymphatic SYSTEM of humans. Examples of nematode parasites that cause lymphatic filariasis includes Wuchereria bancrofti, Brugia malayi and Brugia timori. The larvae (microfilariae) of the parasite are taken up by the mosquito when it feeds.

Ringworm is a skin infection due to a fungus. Often, there are several patches of ringworm on your skin at once. Ringworm is common, especially among children. However, it may affect people of all ages. It is caused by a fungus, not a worm like the name suggests. Many bacteria and fungi live on your body. Some of these are useful, while OTHERS can cause infections. Ringworm occurs when a type of fungus called tinea grows and multiplies on your skin.

Ringworm can affect the skin on your:

Beard -- Tinea barbae

Body -- Tinea corporia

Feet -- Tinea pedis (also called athlete's foot)

Groin area -- Tinea cruris (also called jock ITCH)

Scalp -- Tinea capitis.

3. Amoebiasis, or amebiasis, refers to infection caused by the amoeba Entamoeba histolytica. The term entamoebiasis is occasionally seen but is no longer in use; it refers to the same infection. A gastrointestinal infection that may or may not be symptomatic and can remain latent in an infected person for several years, amoebiasis is estimated to cause 70,000 deaths per year world wide. Symptoms can range from mild diarrhoea to dysentery with blood and mucus in the stool. E. histolytica is usually a commensal organism. Severe amoebiasis infections (known as invasive or fulminant amoebiasis) occur in two major forms. Invasion of the intestinal lining causes amoebic dysentery or amoebic colitis

<P>ANSWER:

S,p,o,n its a order of electronic AFFINITY

ANSWER:

Carbon dioxide REACTS with limewater to FORM calcium carbonate, which precipitates out of the SOLUTION

ANSWER:

1. lemda=ct

EXPLANATION:

nhc/lemda=nhcvt

EXPLANATION:

Position

Ep + EX

Height (m)

Velocity V)

Potential Kinetic

Energy (Ep) Energy (Ep)

A

10

B

6

с

D

0

ok

ANSWER:

well if AB toh iz ekushey UDDIN in TV tv ex ex wa

Explanation:

s cl in the of TK ISKA is of of