Answer: The best way to promote the process are:
--> Add a bit of solid as a seed crystal.
--> Scratch the bottom of the flask gently with a stirring rod.
Explanation:
A crystal growth is seen is SUPERSATURATED solutions which contains more solute than it can normally dissolve at that given temperature. It is usually very UNSTABLE and capable of releasing the excess solute if disturbed, either by shaking or seeding with a tiny crystals.
Crystallization can be used for the separation of two salts with different solubilities as well as for purification of a soluble salt that contains insoluble solid impurities. Recrystallization improves the validity of the process. Crystallization can be initiated by:
--> Scratching the bottom of the flask gently with a stirring rod: scratching initiates crystallization by providing energy from the high-frequency vibrations.
--> Adding a bit of solid as a seed crystal: Seed crystals create a nucleation site where crystals can begin growth.
Answer: The answer is 162g.
Explanation: To calculate the mass of a molecule, you have to find the molar mass of each element of the molecule.
Molar mass of C = 12g/mol
Molar mass of H = 1g/mol
Molar mass of O = 16g/mol
Molar mass of S = 32g/mol
From the allicin's formula, there are:
6 C = 6.12 = 72
10 H = 10.1 = 10
1 O = 1.16 = 16
2 S = 2.32 = 64
Adding them up:
C6H10OS2 = 72+10+16+64 = 162g/mol.
As it is requested 1 mol of allicin, it has 162g.
Answer:
It is a force acting on the object.
Explanation:
The answer option which is true about the weight of an object is: C. It is a force acting on the object.
Weight can be defined as the force acting on a physical body or an object as a result of gravity. Also, the weight of an object is measured in Newton.
Mathematically, the weight of an object is given by the formula;
Where;
m is the mass of the object.
g is the acceleration due to gravity.
In conclusion, the weight of an object is the force acting on an object due to gravity.
Answer:
CH4+4Cl2=CCl4+4HCI
Explanation:
It's been a while since i've done one of these, but I believe this is right. Hope this helps!
