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Yogita Ingle 7 years ago

Enthalpy or Heat of Reaction:
It is the change in enthalpy that accompanies a chemical reaction represented by a balanced chemical equation.
ΔrH = ΣH_(p) – ΣH_(R)
Enthalpy of reaction expressed at the standard state conditions is called standard enthalpy of reaction (ΔH).

Yakshi ? 7 years ago

So....u can say that ......enthalpy is a kind of energy but the difference is that it is in minimum amount i.e.1 mole

Yakshi ? 7 years ago

Harshit.....he is asking that what is enthalpy of a rxn.....?

Swaggy Harshit⚘ 7 years ago

Where is the rxn--?

ANSWER

Hey after a long time i again come in this app ?? toh kaise ho aap log

Posted by Swaggy Harshit⚘ 7 years ago

CBSE > Class 11 > Physics

5 answers

???. Pragati 7 years ago

✌️✌️

0Thank You

Swaggy Harshit⚘ 7 years ago

Yakshi tumne phale bhii cmnt kia tha but sry may be u changed yur name can u pls tell me whts yur name before

Yakshi ? 7 years ago

???

Ankit Singh 7 years ago

My feeling is same

Yakshi ? 7 years ago

Feeling terrible after taking science ???

4Thank You

ANSWER

Supply of a good rises from 200 units as a result of 20 percent rises in its price. Calculate its price elasticity of supply

Posted by Sanjana Sarangi 7 years ago

CBSE > Class 11 > Economics

1 answers

Shrey Vishwakarma 7 years ago

ANSWER

What is a gravity of moon

Posted by Sumit Rawat 7 years ago

CBSE > Class 11 > Physics

1 answers

Yakshi ? 7 years ago

1.62 m/s^2

4Thank You

ANSWER

What is the value of escape velocity on the surface of moon

Posted by Sumit Rawat 7 years ago

CBSE > Class 11 > Physics

2 answers

Yogita Ingle 7 years ago

Moon has no atmosphere because the value of acceleration due to gravity ‘g’ on surface of moon is small. Therefore, the value of escape velocity on the surface of the moon is small (only 2.5 km/s . The molecules of the atmospheric gases on the surface of the moon have thermal velocities greater than the escape velocity. That is why all the molecules of gases have escaped and there is no atmosphere on moon.

Yakshi ? 7 years ago

I found it on google and the answer is....11.2 km/s

ANSWER

अधिकार क्या है

Posted by Davinder Singh 5 years, 8 months ago

CBSE > Class 11 > राजनीति विज्ञान

2 answers

Aayushi Sharma 6 years, 11 months ago

Rajaye se jo hume prapt hote h unhe adhikar kaha jata hai...Adhikar ka ulanghan hone pr hum sarvoch naylaye me apil dal skte hai....

0Thank You

Umesh Kumar 7 years ago

अधिकार हमारी जरूरत को पूरी करने में मदद करती हैं

ANSWER

What is charge of one coulomb

Posted by Mohd Saif Saif 7 years ago

CBSE > Class 11 > Physics

1 answers

Sakshi?? Dubey 7 years ago

6.24×10 ki power 18

ANSWER

Alkynes

Posted by Akanksha Koundal 7 years ago

CBSE > Class 11 > Chemistry

1 answers

Akanksha Koundal 7 years ago

Oxidation of alkyne

ANSWER

Find the mass of the earth?

Posted by Rahul Yadav 7 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A coading of discount according to customet type NET BEANS???

Posted by Kirti Lalchandani 7 years ago

CBSE > Class 11 > Informatics Practices

0 answers

ANSWER

Formula of ch 1 to 15

Posted by Mohit Ruhil 7 years ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Father to son extra question

Posted by Ashish Tiwari 7 years ago

CBSE > Class 11 > English Elective NCERT

2 answers

Rohit Kirad 7 years ago

What story tell me

Ashish Tiwari 7 years ago

Chahiye

ANSWER

"The author's personal internal conflict urges the relationship in every aspects to obey". Justify.

Posted by Baishakhi Rani 7 years ago

CBSE > Class 11 > English Core

0 answers

ANSWER

HIMATIA7U enter it in my cbse wallet and get 50 rupees Please any one give me your code

Posted by Himanshu Shekhar 7 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What promise did sahid ali take to his friend amitabh ghosh?

Posted by Aakash Chourasia 7 years ago

CBSE > Class 11 > English Core

0 answers

ANSWER

What is meant by redox reaction

Posted by Dayanand Huddar 7 years ago

CBSE > Class 11 > Chemistry

1 answers

Ankit Singh 7 years ago

The formation of hydrogen fluoride is an example of a redox reaction. Another example of a redox reaction is the formation of hydrogen fluoride. We can break the reaction down to analyze the oxidation and reduction of reactants. The hydrogen is oxidized and loses two electrons, so each hydrogen becomes positive.An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

ANSWER

What is consumer equilibrium?

Posted by Nikhil Mishra 7 years ago

CBSE > Class 11 > Economics

2 answers

Sakshi Sharma ??️??️??️ 7 years ago

Consumer’s Equilibrium : - consumer equilibrium is a state of balance (rest) for the consumer from where he doesn’t want to move either forward or backward. This is achieved when consumer gets maximum satisfaction with given income and he doesn’t want to change his way of existing expenditure.

Deepak Choubey 7 years ago

Consumer Equilibrium refers to the situation when a consumer is having maximum satisfaction with limited income and has no tendency to change his way of existing expenditure.

ANSWER

When we push a box, we are applying force i.e.,action and box is displaced by some length. By newton's third law, for action,there is reaction which is equal and opposite, it means,reaction done by box, F = -F' so both forces should be balanced . But why box slip when applying force,in fact it should be balanced(equal & opposite reaction) ?

Posted by Abhishek Karaiya 7 years ago

CBSE > Class 11 > Physics

2 answers

Shubham Kumar 7 years ago

Every body has a mass which is its limit , when a force exceeding that mass will be applied on it , that body will change its state When we push a body by a distance , then we have actually exerted more force then a body can exert on us. Body also does some work by making us tired

Yakshi ? 7 years ago

Exactly!!!!! I was thinking about this too......according to me....if there is non zero net force means....F+F'is not equal to zero then body will accelerate (newton's second law)i.e.acceleration depends on two factors...net force and mass of obj...but....if we apply constant force on body then an opposite force will act on it simultaneously ....the net force become zero and the body will move with constant velocity because of law of inertia which means object wants to be motion.......

ANSWER

Find a point on the x-axis,which is equidistant from the points (7,6) and (3,4).

Posted by Aditya Sharma 7 years ago

CBSE > Class 11 > Mathematics

7 answers

Sakshi?? Dubey 7 years ago

A point is (15/2,0) find by the distance formula

0Thank You

Yakshi ? 7 years ago

Is it clear now???

Yakshi ? 7 years ago

U will not use mid point formula......u have to use distant formula....let all three points as P Q and R .as these two point are equidistant....so.....find distance of PQ and then QR and put them equal and solve u will get answer

4Thank You

Yakshi ? 7 years ago

Yes i was wrong....now.....let me tell u correct one.....only last method was wrong....

Yakshi ? 7 years ago

I could be wrong.....i m not sure sorry???

Yakshi ? 7 years ago

The point which we need to find is on x axis which means y=0....okk???now let the coordinates be(x,0)...this point is eqidistant from those points so....u can use mid point formula i.e. x1 + x2 /2 = x so,.....7+3 /2=x so....x will be 5......

Manju Mali 7 years ago

I don't know the answers plz ask from your teacher.....

ANSWER

Tomorrow is my birthday and after one day .....my maths exam and now i have suffered from fever......what should i do????????

Posted by Yakshi ? 7 years ago

CBSE > Class 11 > Other Subjects

3 answers

Říý@ ?? 7 years ago

HAPPY BELATED BIRTHDAY YAKSHI...........????....................

Pramod Pandey 7 years ago

Z??

Yakshi ? 7 years ago

I mean i have been suffered*

ANSWER

Hey guys...whats up

Posted by Lovely Dhawan 7 years ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Construction of simple bar diagram when values are in decimals like 56.8, 63.7

Posted by Srishti Goyal 7 years ago

CBSE > Class 11 > Economics

0 answers

ANSWER

What is collisions???? and explain its types??

Posted by Ashwini Kumar 7 years ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years ago

When objects collide, a number of different things can happen depending on the characteristics of the colliding objects. Of course, you know that momentum is always conserved in a closed system. Imagine, though, the differences in a collision if the two objects colliding are super-bouncy balls compared to two lumps of clay. In the first case, the balls would bounce off each other. In the second, they would stick together and become, in essence, one object. Obviously, you need more ways to characterize collisions.

Elastic collisions occur when the colliding objects bounce off of each other. This typically occurs when you have colliding objects which are very hard or bouncy. Officially, an elastic collision is one in which the sum of the kinetic energy of all the colliding objects before the event is equal to the sum of the kinetic energy of all the objects after the event. Put more simply, kinetic energy is conserved in an elastic collisions.

Inelastic collisions occur when two objects collide and kinetic energy is not conserved. In this type of collision some of the initial kinetic energy is converted into other types of energy (heat, sound, etc.), which is why kinetic energy is NOT conserved in an inelastic collision. In a perfectly inelastic collision, the two objects colliding stick together.

In reality, most collisions fall somewhere between the extremes of a completely elastic collision and a completely inelastic collision.

ANSWER

A nuclie is at rest in the laboratory frame of refference.show that if it disintegrates into two smaller nuclie the product must move in opposite dirextion

Posted by Prince Tomar 7 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

in which year was wildlife act enacted in india?

Posted by Anmol Manchanda 7 years ago

CBSE > Class 11 > Geography

2 answers

Shadab Hasan 7 years ago

In 1972 comprehensive Wildlife Act was enacted in India

Gaurav Seth 7 years ago

An Act to provide for the protection ofWild animals, birds and plants and for matters connected therewith or ancillary or incidental thereto. The Wildlife Protection Act, 1972 is an Actof the Parliament of India enacted forprotection of plants and animal species.

ANSWER

Big Bang Theory kya hoti hai

Posted by Tushar Rajbhar 5 years, 8 months ago

CBSE > Class 11 > भूगोल

0 answers

ANSWER

What is the aim of journal entry in accountancy

Posted by Yashu Malik 7 years ago

CBSE > Class 11 > Accountancy

2 answers

Khushi Jain 7 years ago

and also maintain all yhe the transaction at one place

Suryapratap Shekhawat 7 years ago

To know the debit and cridet

ANSWER

Discuss the main mode og communication during the pre-historic period? Justice Jast as Sounds Arts

Posted by Arjun Yadav 7 years ago

CBSE > Class 11 > History

0 answers

ANSWER

What is difference between algae and bryophyta

Posted by Saba Elias 7 years ago

CBSE > Class 11 > Biology

2 answers

Saba Elias 7 years ago

Thanks

Yakshi ? 7 years ago

ALGAE :- 1)they are mostly aquatic. 2)body may be unicellular or multicellular. 3)pores and stomata are absent for gaseous exchange. 4)asexual reproduction is present or takes place 5)sporophytic phase is highly reduced. BRYOPHYTES :- 1)mostly terrestrial 2)multicellular 3)pores and stomata are present. 4)asexual reproduction does not take place. 5)sporophytic phase is well developed.