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Ask QuestionPosted by Likhith Kannadiga 5 years, 1 month ago
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Tripti Verma 5 years, 1 month ago
Posted by Likhith Kannadiga 5 years, 1 month ago
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Sakshi Jagtap 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Crystallisation- Crystallization is a process that separates a pure solid in the form of its crystals from a solution. This method is used to purify solid, example the salt we get from sea water can have many impurities in it. To remove these impurities, the process of crystallization is used. Crystallization technique is better than simple evaporation technique as-
• Some solids decompose or some, like sugar, may get charred during heating to dryness.
• Some impurities may remain dissolved in the solution even after filtration. On evaporation these contaminate the solid.
Posted by Soham Gholap 5 years, 1 month ago
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सरीफ विद्यार्थी 5 years, 1 month ago
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Samiksha Singaraj 💫 5 years, 1 month ago
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Suchitra Sen 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Step 1. Make use of the chemical formula to determine the number of atoms of each element in the compound.
Step 2. Multiply the atomic weight of each element with its number of atoms present in the compound.
Step 3. Add up all and assign unit as grams/mole.
Example. 1 What is the molar mass of sodium carbonate, Na2CO3 ?
Solution Since sodium carbonate contains two atoms sodium, one atom of carbon and three atoms of oxygen. The molecular weight would be
Na : 2 x 23.0 = 46
C : 1 x 12.0 = 12
O : 3 x 16 = 48
When we add up the total values i.e, 46 + 12 + 48 = 106
Therefore, the molar mass of Na2CO3 is 106 g/mole.
Posted by Asmit Raj 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
using princile of energy conservation initial kinetic energy = final potential energy
thus
mgH = 1
m = 1/gH = 1/(10*1) = 0.1 kg
Posted by Jai Ghosh 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Membrane biogenesis is the process that involves cell membrane development with the aid of proteins and lipids. The production of these membranes is driven by the endoplasmic reticulum. Membranes synthesized by the membrane biogenesis process help to divide the cell into functional and structural compartments. Entire cell membranes are called endomembranes. The endomembrane network contains different membranes suspended in the cytoplasm and the plasma membrane.
Posted by Jai Ghosh 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Newton's second law of motion states that the force applied to the system is equal to the time rate of change of momentum.
So, F= dP/dt
But P=mv
So, F= d(mv)/ dt
Or F=m dv/dt
⟹ F=ma
Posted by Mohammad Raiyan 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
When two bodies collide but there is no loss in the overall kinetic energy, it is called a perfectly elastic collision. It can be defined as: An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
Examples of Elastic Collision
- When a ball at a billiard table hits another ball, it is an example of elastic collision.
- When you throw a ball on the ground and it bounces back to your hand, there is no net change in the kinetic energy and hence, it is an elastic collision.
Posted by Likhith Kannadiga 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
A sol is a heterogeneous mixture. They are quite stable in nature.
Example: Milk, blood, smoke
Mohammad Raiyan 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
| Character | Fog | Mist |
| Definition | Fog is defined as the thick layer of cloud, that appears at the surface level, and is a composition of small droplets of water suspended in the air. | Mist is defined as the layer of cloud, that is created due to the volcanic activities, changes in the level of temperature and humidity. |
| Density | The density of fog is always thick as compared to mist. | The density of mist is comparatively low as compared to Fog. |
| Durability | Fog last for longer period. | Mist last for a short time. |
| Visibility | It is visible for less than one kilometre. | It is visible between one to two kilometres. |
Posted by Abi Shiek 5 years, 1 month ago
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Tanisha . 5 years, 1 month ago
Gaurav Seth 5 years, 1 month ago
The first law of motion implies that things cannot start, stop, or change direction all by themselves. It requires some force from the outside to cause such a change. This property of massive bodies to resist changes in their state of motion is called inertia. Newton’s first law is also known as the law of inertia.
Newton’s 1st law states that a body at rest or uniform motion will continue to be at rest or uniform motion until and unless a net external force acts on it.
Posted by Archita Priyadarshani 5 years, 1 month ago
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Roshani Pal 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
In solids atoms are closely spaced in comparison to those of liquids and gases. That’s why density of solid is higher.
Posted by Diya Gupta 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
The metals like Sodium ( Na) and Potassium ( K ) are easily cut with the help of a knife. So, sodium and potassium are not lustrous.
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