The structure of isocynide is
N=C
What is the importance of VSEPR theory?
Valence bond theory describes the electronic structure of molecule .The theory says that electrons fills the atomic orbitals of an atom within a molecule .
In the structure of isocynide there are triple bonds between Nitrogen and carbon . The bond length is 115.8pm and the bond angle is 180°. There is two pi and one sigma bond .
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Answer:
Explanation:
1. Boiling point
The boiling point of a substance especially a fluid, is that temperature at which it turns from liquid to gas. The boiling point of water for example is 100°C, at this temperature, liquid water changes to vapor which a gaseous form of water.
2. decrease
When the size of a sample increases, the surface area of the sample decreases and so also the solubility. Smaller sized samples have a large surface area through which the solvent can readily surround and dissolve a material. Larger sized particles on the other hand have low surface area and dissolves slowly than expected.
3. Wood has low thermal conductivity, and metal has high thermal conductivity.
The thermal conductivity of wood is very low while that of metals is very high. This why metals will conduct heat away from a heat source and a wood will remain unchanged in terms of temperature.
4. Volume
Volume is an extensive property of a matter that depends on the amount of substance present. Volume is the amount of space a substance occupies. The more the substance, the more the space it occupies. This why 20g of water will have a higher volume compared to 15g of water.
5. Solvent
A solvent is a liquid that dissolves other substances. When solvents dissolves other substances, they form a solution.
<span>3.75 gallons need to be drained and replaced with bleach.
Change the problem to "What amounts of a 100% solution and a 4% solution is needed to make 90 gallons of a 8% solution?" Given that, we'll use the following values.
x = amount of 4% solution.
90-x = amount of a 100% solution.
The equation to solve then becomes.
0.04 x + (90-x) = 0.08 * 90
0.04 x + 90 - x = 7.2
Add x to both sides
0.04x + 90 = 7.2 + x
Subtract 0.04x from both sides
90 = 7.2 + 0.96x
Subtract 7.2 from both sides
82.8 = 0.96x
Divide both sides by 0.96
86.25 = x
So you now know that you need 86.25 gallons of the original 4% solution and (90-86.25) = 3.75 gallons of the bleach to make the desired 90 gallons.
So simply drain 3.75 gallons from the tank and replace with bleach.</span>
0.590 mol of calcium carbonate are in 63.8 g of calcium carbonate.
<u>Explanation:</u>
Chemical substances are framed with respect of their molar quantity, as these are molar ratios, not mass, that occur in stoichiometrically balanced equations. We divide mass by the molar mass of a single molecule or unit of formula to extract moles from mass.
In order to start calculation, firstly the molar mass of calcium carbonate is needed to be detected as follows:
The molar mass of calcium = 40.08 g/mol, carbon is = 12.01 g/mol while for oxygen = 16.00 g/mol.
Thus adding above quantities to calculate molar mass of calcium carbonate: 40.08 + 12.01 + 3(16.00) = 108.09 g/mol.
Now by dividing the mass of calcium carbonate to its molar mass:
63.8g / 108.09 g/mol = 0.590 mol of calcium carbonate.