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Aarav Yadav 1 month, 1 week ago

Mg - Magnesium

Sanampreet Singh 1 month, 3 weeks ago

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Amit Pathariyaan 1 month, 2 weeks ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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Mass of reactant = Mass of products Sodium carbonate + Ethanoic acid = Carbon dioxide + water + sodium ethanoate => 5.3g+6g = 2.2g+0.9g+8.2g => 11.6g = 11.6g In this case mass of reactants is equal to mass of products, Means mass can neither be created nor be destroyed in a chemical reaction. Hence above statement proved law of conservation of mass that is given by A. Levoiser .
  • 2 answers

Aqsa Shireen 1 year, 8 months ago

Two single covalent bond

Laxm Kant Ji 3 years, 2 months ago

The rocket work on the principles of conservation of
  • 3 answers

Mohd Rijwan 3 years, 4 months ago

Chapter 1 Hamare Aas Paas ke padarth

Basit Basit Rashid 3 years, 7 months ago

Hloo

Yogita Ingle 3 years, 7 months ago

Factors That Affect the Evaporation

  • Temperature: As the temperature increases, the rate of evaporation also increases. Temperature and rate of evaporation are proportional to each other.
  • Surface area: As the surface area increases, the rate of evaporation increases. The surface area and rate of evaporation are proportional to each other.
  • Humidity: The rate of evaporation decreases with an increase in humidity. Humidity and the rate of evaporation are inversely proportional to each other.
  • Wind speed: Increase in wind speed results in increased evaporation. Wind speed and rate of evaporation are proportional to each other.
  • 2 answers

Mahammad Rifan Rifan 3 years, 8 months ago

What is cell

Gaurav Seth 3 years, 9 months ago

1.No position for isotopes
2.He separated similar elements and put together dissimilar elements
3.Position of hydrogen is uncertain.
4.No position for fblock elements

  • 1 answers

Yogita Ingle 3 years, 10 months ago

Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions. In double replacement reactions, the positive ions exchange negative ion partners. A double replacement reaction is represented by the general equation.

AB + CD → AD + CB

Fe2O3 + 6HCl → 2FeCl3 + 3H2O

  • 3 answers

Himangi Himangi 1 year, 3 months ago

The outer most shell is called the valence electrones

Akash Singh 3 years, 10 months ago

The combining capacity of an atom of an element is called valency

Yogita Ingle 4 years, 1 month ago

It is the ability of an atom to gain or lose electron in order to achieve the noble gas configuration. It refers to the ability of an element to combine with other element. It is obtained by determining the number of electrons in the outermost shell (also called valence shell) of each atom of an element. For instance, sodium has 1 electron in its outermost shell and hence valency of sodium is 1.

  • 2 answers

All Things Master With Me 3 years, 6 months ago

C10H5CLN2

Neha Singh 4 years, 1 month ago

Valence
  • 1 answers

Nithya Vijay 4 years, 4 months ago

Arrangement of elements, based on their periodicity, which means repetition of properties based on certain aspect. Based on the atomic number, the modern periodic table was framed.
  • 1 answers

Praneeth Reddy 4 years, 3 months ago

Chromosomes
  • 1 answers

Praneeth Reddy 4 years, 3 months ago

Cleanninness
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  • 1 answers

All Things Master With Me 3 years, 6 months ago

The number of covalent bonds that a particular atom can make with other atoms in forming a molecule.
  • 1 answers

All Things Master With Me 3 years, 6 months ago

The branch of science that deals with chemical formulas and theories.
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Gaurav Seth 4 years, 8 months ago

In an earthen pot, water gets evaporated quickly through the pores. Cooling is caused by evaporation. Some heat energy is utilised during the process of evaporation. Since this energy is taken from the water itself, it leads to a lowering of temperature in the remaining amount of water.

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Yogita Ingle 4 years, 8 months ago

Density of water varies with temperature. It is highest at 4 oC. At low tempreature, When ice is formed, density is reduced. So At low temprature in ocean, A layer of Ice floats on water and below this layer, all aquatic species can survive. At high temeperature,  Warm water of ocean causes vast currents which circulate heat from equator to temperate zone. Hence, play role in controlling climate of whole earth.

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Akash Singh 3 years, 10 months ago

"Law of consevation of matter" Is the law required of the chemical equation
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  • 1 answers

Saireddy Vagdevi Vagdevi 4 years, 7 months ago

Due to diffusion of gases
  • 2 answers

Saireddy Vagdevi Vagdevi 4 years, 7 months ago

Metalloids contain both metals and non metals

Gaurav Seth 5 years, 1 month ago

The elements which display properties of both metals and non-metals are classified as metalloids. In the Periodic Table, they separate metals from the non-metals. For eg. Silicon, Arsenic etc.

  • 1 answers

Vishal Saxena 4 years, 11 months ago

Burning of any substance in presence of oxygen is known as combustion

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