Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

It is represented by the equation: vrms=√3RTM v r m s = 3 R T M , where vrms is the root-mean-square of the velocity, Mm is the molar MASS of the gas in kilograms per mole, R is the molar gas CONSTANT, and T is the temperature in KELVIN.

EXPLANATION:

C =CARBON h= hydrogen O= oxygen

ANSWER:  EXPLANATION:

Answer:

hot water NEED to LOSE more energy than cold water to freeze into ice

Explanation:

that MEANS hot water need to change into cold water FIRST and then into ice

but cold water directly CHANGES into ice

Answer:

a reddish-brown substance that FORMS on the surface of iron, etc., caused by the action of AIR and WATER

Answer:

2.26796. .... I HOPE you GIVE me BRAINLY AWARD

ANSWER:

ANGULAR MOMENTUM= mvr=nh/2×3.14 by BOHR

THEORY

HEY mate what is your question

Answer:

we now that molecular maas of the nitrogen(N) is 14. Hydrogen(H) is 1. carbon(C) is 12. And OXYGEN is 16.

1) NH3= 14+1×3=17g

2)CH3COOH=12+1×3+12+16+16+1=60g

3)C2H5OH=12×2+1×5+16+1=42g

Aluminium oxide is a strong reducing agent and has a strong affinity towards oxygen and HENCE NEEDS very high temperature for GETTING reduced whereas COPPER is not a strong reducing agent as aluminium and so it can be reduced by hydrogen

ANSWER:

Because he was PLANTING TREES

ANSWER:

BOYLES LAW show the relationship betwen the VOLUME and pressure of gas

and its formula is P¹V¹=P²V²

ANSWER:

EXPLANATION:

CH3-CH2-CH3

<P>Answer:

3 is the answer.

since, l=1=p SUBSHELL

and NITROGEN has 3 ELECTRONS in p subshell.

Aakashian...?

ANSWER:

DANIEL GABRIEL is the FOUNDER of mercury.Please BRAINLEIST my answer

Explanation:

AlCl3 is the CORRECT ANSWER.........

HOPE it HELPS you.

ANSWER:

HIGHEST VALUE is 1 of its.

Explanation:

the total number of PIE BONDS and sigma bonds in C2(CN) 4 are : (1) 9 sigma and 9 pi

(²)9 sigma and 18 pi (3) 18 sigma and 9pi (4)

lewisdot STRUCTURE,( 1) each TIME atom

is liked to another one,you have a sigma bonds

Answer:

Introduction to Organic Compounds

Earlier people thought that compounds which are obtained from plants and animals are organic compounds and compounds which are obtained from minerals, non-living SOURCES are termed as inorganic compounds. However, the modern definition of organic compounds is a bit different to this.

An organic compound is defined as any compound whose molecules contain carbon and hydrogen ( also known as ” hydrocarbons” ) or compound that is the derivative of it. The branch of science which deals with the scientific STUDY of structure, PROPERTIES and REACTIONS of hydrocarbons and their derivatives is known as organic chemistry.

Explanation:

.

.

.

.

. PLEASE do mark me as brainliest

Answer:

take a battery and copper WIRE and connect the WIRES with a plastic and connect the other wire with iron NAIL you can see the iron nail BULB will glow goodly and the plastic will do not glow goodly so this is prove that plastic is bad CONDUCTOR of heat

Answer:

Two COMBINATION of MOTIONS are called MULTIPLE motion.

For EXAMPLE - Rolling of ball on the table.

ANSWER: DXY and dx2-y2

Explanation:

ANSWER:

BOND order

Explanation:

ANSWER:

a

Explanation:

1

ANSWER:

रासायनिक अभिक्रिया में एक या अधिक पदार्थ आपस में अन्तर्क्रिया (इन्टरैक्शन) करके परिवर्तित होते हैं और एक या अधिक भिन्न रासायनिक गुण वाले पदार्थ बनते हैं। किसी रासायनिक अभिक्रिया में भाग लेने वाले पदार्थों को अभिकारक (रिएक्टैन्ट्स) कहते हैं। अभिक्रिया के फलस्वरूप उत्पन्न पदार्थों को उत्पाद (प्रोडक्ट्स) कहते हैं। लैवासिये के समय से ही ज्ञात है कि रासायनिक अभिक्रिया बिना किसी मापने योग्य द्रव्यमान परिवर्तन के होती है। (द्रव्यमान परिवर्तन अत्यन्त कम होता है जिसे मापना कठिन है)। इसी को द्रव्यमान संरक्षण का नियम कहते हैं। अर्थात किसी रासायनिक अभिक्रिया में न तो द्रव्यमान नष्ट होता है न ही बनता है; केवल पदार्थों का परिवर्तन होता है।

परम्परागत रूप से उन अभिक्रियाओं को ही रासायनिक अभिक्रिया कहते हैं जिनमें रासायनिक बन्धों को तोडने या बनाने में एलेक्ट्रानों की गति जिम्मेदार

Answer:

321.5 g of CuSO4 and 22.4 L of SO2

Explanation:

FIRST of all, the reaction is :

Cu + 2H2SO4(conc.) = CuSO4 + 2H2O + SO2

The gram atomic mass of Cu is 63.5 g.

The gram atomic mass of CuSO4 is 159.5

Therefore,

63.5 g of Cu gives = 159.5 g of CuSO4

so, 128 g of Cu gives = (159.5/63.5) * 128 g of CuSO4

i.e.                               = 321.5 g of CuSO4

Now, 1 mole of any element/compound at STP occupies 22.4 L of that element/compound.

1 mole of Cu gives = 1 mole of SO2

so, 22.4 L of Cu gives = 22.4 L of SO2.

Hope this HELPS.

Answer:

In Winter MORNING as more of the condensation TAKING place, the more water vapour present in the atmosphere UNDERGOES condensation process. This CAUSES more water drops on the objects present which are in the open atmosphere.

ANSWERS;

The MOLECULAR formula of the carbohydrate is

Explanation:

Given, Carbon present = 124g

Water present after decomposition = Total carbohydrates (in GM) - carbon present after decomposition (in gm)

                               Water present  = 310 - 124

                               Water present  = 186 gm

Number of moles in carbon(C) = 10.03

Number of moles in water( ) = 10.03

Now, Taking the ratio of = 1: 1

Molecular formula: 0.0833 moles of the carbohydrate contains 1.00g or one atom of hydrogen.

Therefore,

One mole of the carbohydrate will contains one mole of hydrogen atoms                    

The number of hydrogen atoms in the molecules is 12

The molecular formula will be the 6 times for the EMPIRICAL formula-

Hence, the molecular formula of the carbohydrate is

Answer:

Fluorine is the most electronegative element. Fluorine has an electronegativity of 3.98 on the Pauling Electronegativity SCALE and a VALENCE of 1. A fluorine atom needs one ELECTRON to fill its outer electron shell and ACHIEVE stability.

Please mark as Brainliest.

Answer:

MIXTURE MEANS MANY THINGS are mixed together.

Answer:

The bond ORDER of 02- = 1.5

The bond order of 02+ = 2.5

Therefore, the calculation of the two bond ORDERS is 4.

PLEASE ADD IN BRAINLIST.

Answer:

Mendeleev started his WORK in the 1800's when 63 ELEMENTS were known to chemists. So Mendeleev first noted down the CHEMICAL PROPERTIES of all the 63 elements on cards. He had noticed a relation between atomic masses of elements and their chemical and ALSO physical properties.

Answer:

Groundwater SUPPLIES drinking WATER for 51% of the total U.S. population and 99% of the rural population. Groundwater helps grow our food. 64% of groundwater is USED for irrigation to grow crops.

EXPLANATION:

HEY MATE HERE IS YOUR ANSWER

SO2 (G) + 2H2S (aq) ->3S (s) + 2H2O (l)

HOPES THIS HELPS YOU............

A CHEMICAL formula tells US the NUMBER of atoms of each ELEMENT in a compound. It CONTAINS the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.

DEAR Student,

◆ Answer -

(4) 83.5%

● Explaination -

Reaction of sodium chloride with SILVER nitrtate is as follows -

NaCl + AgNO3 --> AgCl + NaNO3

That is 1 mol of NaCl gives 1 mol of AgCl.

Mass of NaCl PARTICIPATING in reaction is -

W(NaCl) / M(NaCl) = W(AgCl) / M(AgCl)

W(NaCl) / 58.45 = 14.35 / 143.5

W(NaCl) = 0.1 × 58.45

W(NaCl) = 5.845 g

Percentage of NaCl in SAMPLE is -

NaCl % = 5.845 / 7 × 100

NaCl % = 83.5 %

Therefore, NaCl sample was 83.5 % pure.

Hope that was useful...

EXPLANATION:

STRUCTURE is ch3-ch2-o-ch2-ch3

common NAME is DIETHYL ether

example for KETONE ch3-co-ch3

ANSWER:

Explanation:

A part from new products, MANY other things accompany a CHEMICAL change, those things are :

Heat, light or any other radiation may be GIVEN off or absorbed.

Change in smell may take place.

Sound may be produced.

Change in colour may take place.

A gas may be formed.

ANSWER:

by distillation

Explanation:

in this process the liquid is converted into vapour .The vapors are collected and then condenses back to get the pure liquid .The solid COMPONENT REMAINS in the distillation FLASK

The lanthanide contraction is the greater-than-EXPECTED decrease in IONIC radii of the elements in the lanthanide series from ATOMIC NUMBER 57, lanthanum, to 71, lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72, hafnium

Answer:

HOMOGENEOUS MIXTURES

HETEROGENEOUS MIXTURES

The PREFIXES "homo"- INDICATE sameness The prefixes: "hetero"- indicate difference.

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions.

A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.

Graphic on the left of "Dancing Raisins" shows liquid, solid, and gas substances in a heterogeneous mixture.

PARTICLE size distinguishes homogeneous solutions from other heterogeneous mixtures. Solutions have particles which are the size of atoms or molecules - too small to be seen.

A colloid is a homogeneous solution with intermediate particle size between a solution and a suspension. Colloid particles may be seen in a beam of light such as dust in air in a "shaft" of sunlight. Milk, fog, and jello are examples of colloids.

In contrast a suspension is a heterogeneous mixture of larger particles. These particles are visible and will settle out on standing. Examples of suspensions are: FINE sand or silt in water or tomato juice.

Corn oil is homogeneous, White vinegar is homogeneous. A sugar solution is homogeneous SINCE only a colorless liquid is observed. Air with no clouds is homogeneous. For example beach sand is heterogeneous since you can see different colored particles. Vinegar and oil salad dressing is heterogeneous since two liquid layers are present, as well as solids. Air with clouds is heterogeneous, as the clouds contain tiny droplets of liquid water.

PLEASE ADD ME IN BRAINLIST.

Answer:

F,O.,N = -1,-2,-3, RESPECTIVELY

ANSWER:

gasious STATE and liquid state

Explanation:liquid changes into GAS and then gas again changes into water

on cooling

Answer:

5.76 m/s.

Explanation:

Since, the RADIUS of the hydrogen atom is 0.85nm so it will be 0.85*10^-9 meter. Also  the atomic number of hydrogen is 1, so Z=1 and the value of the  e is given as 1.602*10^-19 J and the value of mass of electron is 9.1*10^-31 kg.

So, we KNOW that the velocity of the electron in the orbit will be v^2=Ze^2/rm. So, v=1*1.602*10^-19/√9.1*10^-31)(0.85*10^-9) which on SOLVING we will GET v=1.602*10^-19/2.781*10^-20 which will be EQUAL to 5.76 m/s.

X is copper metal and y is copper oxide when copper oxide is HEATED with hydrogen it CHANGES to Copper metal again DUE to displacement reaction equation 1 shows that how copper metal is CHANGED to black COLOURED copper oxide and equation 2 shows that how copper oxide is changed into copper metal again . equation 1 is a combination reaction while equation 2 is a displacement reaction

ANSWER:

ATOMIC MASS Of RHODIUM:-

→ 102

ANSWER:

bdujx DU usjx udsb is birb JJ and. of II I hxjcb he bien and I ixe

ANSWER:

xteuTdigucjchkxkfzkfdoizlyxfkzkzlxlxxglxxgl

Is it REALLY 6.023 X 1022 .

It should be 6.023 x 10^22

Explanation:

these all animals are MAINLY found in northern regions of the country India live JAMMU Kashmir HIMACHAL Pradesh Punjab uttar Pradesh UTTARAKHAND EXTRA