Explore topic-wise InterviewSolutions in Current Affairs.

Explanation:

When iron is left in MOIST air, it forms an oxide layer called rust. It is a reddish- BROWN flake WHUCH gets coated over iron article. The reaction that takes place is FE2O3.

Answer:

Yes. It GOES step by step to the 4th then 3rd then 2ND then 1ST by LOSING energy

Explanation:

ANSWER:

this DIAGRAM indicates​  that to WASH your HANDS

EXPLANATION:

ANSWER:

We have given compound MgSO₄ :

Molar mass of MgSO₄ = ( 24 + 32 + 64 ) = 120 g / mol.

a). % composition of MG in MgSO₄ :  

= > ( 24 / 120 ) × 100 %

= > ( 1 / 5 ) × 100 %

= > 20 %

B). % composition of S in MgSO₄ :  

= > ( 32 / 120 ) × 100 %

= > 0.2666 × 100 %

= > 26.67 %

c). % composition of O in MgSO₄ :  

= > ( 64 / 120 ) × 100 %

= > 0.5333 × 100 %

= > 53.33 %

Hence we get required answer.

ANSWER:

SOLUTION A is the CORRECT ANS

ANSWER:

user_photo

Type your question...

12th

Chemistry

Electrochemistry

Electrolytic Cells and Electrolysis

Three electrolytic cells A,...

CHEMISTRY

Three electrolytic cells A,B,C containing solutions of ZnSO

4

,AgNO

3

and CuSO

4

, respectively are connected in SERIES. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How LONG did the current flow? What mass of copper and zinc were deposited?

November 22, 2019avatar

Puneetha Adak

SHARE

VIDEO EXPLANATION

ANSWER

Cell B: Ag

+

+e

−

⇌Ag at cathode.

1 mole (108 g) of Ag is deposited by 96500 C.

1.45 g of Ag will be deposited by

108

96500×1.45

=1295.6C.

Q=It

1295.6=1.5×t

t=864s

Cell A: Zn

2+

+2E

−

→Zn

2 moles of electrons (2×96500 C of current) produces 1 mole (63.5 g) of zinc.

1295.6 C of electricity will deposit

2×96500

65.3

×1295.6=0.438 g of zinc

Cell C: CU

2+

+2e

−

→Cu

2 moles of electrons (2×96500 C) of current will produce 1 mole (63.5 g) of Cu.

1295.6 C of current will deposit

2×96500

63.5×1295.6

=0.426g of copper

Answer:

1-combination REACTION

2-Decomposition reaction

3-Single DISPLACEMENT reaction

4-Double displacement reaction

Answer:

Incidental contamination during the period of GROWTH, harvesting, storage, PROCESSING, transport and DISTRIBUTION of foods are also considered. ... Food is declared ADULTERATED if: A substance is added which DEPRECIATES or injuriously affects it. Cheaper or inferior substances are substituted wholly or in part

Answer:

Of the main GROUP elements, FLUORINE has the highest ELECTRONEGATIVITY (EN = 4.0) and cesium the lowest (EN = 0.79). This indicates that fluorine has a high tendency to gain ELECTRONS from other elements with lower ELECTRONEGATIVITIES.

HOPE it HELPS...  :D

ANSWER:

The activity discriving the reaction of acid with metal carbonates and metal hydrogen carbonate:-

1. Take a SMALL amount of metal carbonate in test tube A and metal bi-carbonate in test tube B.

2. Pour few drops of sulphuric acid in both the test tubes. you will notice evoltion of colourless gas.

3. Pass the evolved gas in both test tube through the lime water eith the help of delivery tube.

4. You will notice that the lime water turn colorless in both the cases. This indicates that the evolved gas carbon-di-oxide.

Example:- ZnCO3 + H2SO4 → ZNSO4 + CO2 + H2O

Explanation:

Answer:

Turbidity Analyzer Working Principle. Turbidity is an OPTICAL PROPERTY of water based on the amount of light scattered and absorped by collodial and suspended particles. ... The light transmitted from the source is directed in equal STRENGTH to the REFERENCE DETECTOR and into the medium

Explanation:

hope it will help you

Answer:

HI buddy

Explanation:

the blue-green SOLUTION is copper chloride

hope it HELPS you

<STRONG>Explanation:

xbxjeuu hu Hence, the growth of nationalism in the colonies is linked to an anti-colonial movement. ... In the process of their struggle with colonialism PEOPLE began discovering their unity. Anti-colonial movement GAVE a strong ISSUE to the people with which they could identify and could come on a common platform.Mar 5,bhfidjheueieiirirreif

ANSWER:

Explanation:

Three TYPES

- Pyro electric detector

- pyro conducting DETECTER

- thermal detecter

The sigma bond is FORMED by the head-on OVERLAP of two sp orbitals. The pi bonds are formed by the side-on overlap of 2p orbitals. where, X = NUMBER of carbon atoms; Y = number of hydrogen atoms and P = number of π bonds/double bonds.

Hope you LIKE it my Ans And plz mark as me [email protected]❤

Answer:

CA2+ IS THE ODD ONE OUT

AS IT HAS VALENCY OF 2 WHEREAS OTHERS HAVE VALENCY OF 1

<<FOLLOW>>

MARK IT AS THE BRAINLIEST

ANSWER:

bdhdi Hence, the growth of nationalism in the colonies is LINKED to an anti-colonial movement. ... In the process of their STRUGGLE with colonialism PEOPLE began discovering their unity. Anti-colonial movement gave a strong issue to the people with which they COULD identify and could come on a common platform.Mar 5,hsuhsusueueueu

ANSWER:

Displacement REACTION is the answer

Explanation:

Hope it helped you

mark as BRAINLIEST and follow me.

ANSWER:

SORRY I can't UNDERSTAND

ANSWER:

NS2,np6

Explanation:

ANSWER:

A buffer is a solution that can resist pH change upon the addition of an ACIDIC or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively STABLE. This is important for processes and/or reactions which REQUIRE specific and stable pH ranges.

Explanation:

hope it will help you

Saponification is a process by which triglycerides are reacted with sodium or potassium hydroxide (lye) to PRODUCE glycerol and a fatty ACID salt called "SOAP." The triglycerides are most often animal fats or vegetable oils. When sodium hydroxide is USED, a hard soap is produced.

Hope it's helpful for u GUYS

ANSWER:

CALCIUM sulphide &&. SODIUM chloride....

Mark me as brainlist ✌️♥️✌️♥️

Answer:

When Zinc carbonate is heated which is a white POWDERY solid, gives carbon DIOXIDE and a yellow solid of zinc oxide. As it forms different PRODUCTS, it UNDERGOES chemical changes. On cooling yellow solid turns in to white, which is a physical change. The PROCESS involves both physical and chemical change.

Explanation:

MARK ME THE BRAINLIEST......

ANSWER:

Molecular MASS is a NUMBER equal to the sum of the ATOMIC masses of the atoms in a molecule. The molecular mass gives the mass of a molecule relative to that of the 12C ATOM, which is taken to have a mass of 12.

The material is a Something that has Certain Characteristics which are used to MANUFACTURE or to produce the desired product. For example, WATER and Fibres are examples of Material. 2. SUBSTANCE: A Substance is a matter that has a definite STRUCTURE or composition.

Answer:

• Ramanadhapuram white.
• Keezhakaraisal.
• Vembur.
• Neelagiri.
• TRICHY black.
• Coimbatore.

Explanation:

PLS MARK as brainliest

ANSWER:

kindly write the complete QUESTIONS or post the picture of that.

I can tell you about oxidation

Oxidation involves addition of oxygen to a substance , removal of hydrogen from a substance and LOSS of electrons from an atom or an ION.

Answer:

Secondary ALKYL halide (2o alkyl halide; secondary haloalkane; 2o haloalkane): An alkyl halide (haloalkane) in which the halogen atom (F, Cl, BR, or I) is bonded to a secondary carbon. General secondary alkyl halide structure. X = any atom but carbon; USUALLY hydrogen.

Brainlest plz

ANSWER:

SEE in the ATTACHMENT MATE

ANSWER:

Dissolving a solid in LIQUID, such as table salt in water, is a PHYSICAL change because only the state of the matter has changed. Physical changes can often be reversed. ALLOWING the water to evaporate will return the salt to a solid state. ... It has not combined with the water to cause a chemical reaction.

Explanation:

Mark as brainliest

<P> Final Answer : K_p = 100 MM HG

Steps:

1) We have,

Since, Volume is constant .

XY_2(g) \rightarrow XY(g) + Y(g) \\ \\ \\t=0 => 600. \rightarrow 0 \quad + 0 \\ \\ t=t_{eq. } => 600-x \rightarrow x.\quad + x

2) Then at Equilibrium

P_T = P_{XY_2}+ P_{XY} + P_Y \\ \\ => P_T = (600-x) + x + x \\ \\ => 800 = 600+ x \\ \\ => x = 200 mm \:Hg

3) Now,

K_p = \frac{x*x}{(600-x) } \\ \\ K_p = \frac{200*200}{400} = 100 mm\: Hg

Hence, Value of K_p = 100 \: mm Hg

ANSWER:

see

Explanation:

a )ENDOTHERMIC B)EXOTHERMIC C)exothermic d)endothermic

Answer:

1) goes with R and 2)goes with P

Explanation:

When a compound has two bond pairs, it's central atom MAKES 180 DEGREE with it's neighbour atoms and forms STRAIGHT line and in the second CASE it forms a tetrahedral bond like in ch4.

Thank You.

Answer:

The gas which is USED in OXYGEN supplying oxygen cylinders to hospitals are HIGHLY COMPRESSIBLE liquids or solids .Therefore the character of the gas is compressibility.

mark as BRAINLIST please

ANSWER:

aarhus

aaron

aaronic

aau

ab

abac

abaca

aback

abacterial

abactinal

abacus

abacuses

ANSWER:

a. 565 K = (565-273)°C = 292°C

b. 125 K = (125-273)°C = -148°C

c. 300 K = (300-273)°C = 27°C

EXPLANATION:

fjjfjfnfrnfnfnfjfjfjbfnfjcincmckfofofifi

ANSWER:

ASSUMING 100% DISSOCIATION of KCL,

ANSWER:

C6H12O6=72+12+96C6H12O6=72+12+96

⇒180gmol−1⇒180gmol−1

ΔTf=Kf×WB×1000MB×WAΔTf=Kf×WB×1000MB×WA

⇒1.86×0.520×1000180×80.20⇒1.86×0.520×1000180×80.20

⇒0.067

Brainlest PLZ

Answer:

Chapter 1 "Introduction to Chemistry" through Chapter 5 "Energy Changes in CHEMICAL Reactions" introduced you to a wide variety of chemical substances and some of the most FUNDAMENTAL CONCEPTS in chemistry, including general descriptions of chemical bonding, mass relationships in chemical equations, and the energy changes associated with chemical reactions. You learned that the atoms of each element contain a unique number of positively charged protons in the nucleus and that a NEUTRAL atom has the same number of ELECTRONS as protons. You also learned that protons and neutrons constitute most of the mass of the atom and that electrons occupy most of the volume of an atom. These facts do not, however, explain the stoichiometries and the structures of chemical compounds; a deeper understanding of the electronic structure of atoms is required.

Carbon dioxide is PRODUCED during the PROCESSES of decay of organic materials and the fermentation of sugars in bread, BEER and wine making. It is produced by combustion of wood and other organic materials and FOSSIL FUELS such as coal, peat, petroleum and natural gas.

ANSWER:

REFER ATTACHMENT for EXPLANATION!!

Answer:

Concentrated SULPHURIC acid is a strong dehydrating agent and PULLS the sugar molecule apart leaving just BLACK carbon which froths due to the heat and water produced.

atomic mass of..... N = 14, H = 1, Cl = 35.5, PT = 195

2(14+1(4)) +195+35.5(6)

= 36 + 195 + 213

= 444

ANSWER:

By GIVING PRESSURE for any WORK..

Answer:

HI here  is your answer

Explanation:

RUDOLF Clausius and James Clerk MAXWELL

Answer:

1. Hence, the growth of nationalism in the colonies is linked to an anti-colonial movement. ... In the process of their STRUGGLE with colonialism people began discovering their unity. Anti-colonial movement gave a strong issue to the people with which they could identify and could COME on a common platform.Mar 5,20g of Al = 20/26.98 mol = 0.74 mol
2. 30g of S = 30/32.07 mol = 0.94 mol
4. so, only min(.74/2,.94/3) = 0.31333 mol of AL2S3 can be formed:
6. .31333 mol Al2S3 = .61667*26.98g Al + .94*32.07 g S = 16.64g Al + 30g S
8. That leaves 3.36g Al unreactedrfgd the first ONE is the

ANSWER:

neolithic stone age

Explanation:

because man FOUND different WAYS of cropping and AGRICULTURE