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3 years ago

Te second period at the bottom of the table is called

Chemistry

1 answer:

katovenus [111]3 years ago

5 0

Answer:

The second row elements are called Actinidies . abbreviated as Ac

Explanation:

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What is the result of crystals boiling the impure product with too much solvent and then cooling on ice?

VMariaS [17]

Answer: Option (c) is the correct answer.

Explanation:

It is known that when we tend to dilute an impure product with too much of solvent then it will lead to dissolution of the solute. As a result, the chances of formation of crystal reduces.

And, when we increase the temperature then there will occur increase in the number of collisions between the solute and solvent molecules.

Hence, solubility of the solute also increases with increase in temperature, placing it on ice bath will further reduce the crystal formation, hence no crystal should be formed in the reaction.

Thus, we can conclude that the result of crystals boiling the impure product with too much solvent and then cooling on ice is that no crystals are produced.

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3 years ago

The chemical equation of photosynthesis includes 6O2. What does the small number after the O represent?

blondinia [14]

Its the number of Oxygen molecules

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3 years ago

Which has a higher average speed of molecules 95 degrees Celsius or 95 degrees Fahrenheit

shutvik [7]

Answer:

95(ninety five) degrees Celsius

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3 years ago

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Draw a lewis structure for ketene, c2h2o, which has a carbon–carbon double bond

MrMuchimi

Visual representation of covalent bonding indicating the valence shell electrons in the molecule, lines represents the shared pair of electron and pair of electrons that are not involved in bonding are represented as dots(lone pairs) are known as Lewis structures.

Compound formation takes place in order to complete the octet of each element that is according to octet rule, each atom forms bond with other atom in order to complete their octet that is to get eight electrons in its valence shell and attain stability.

An organic compound of the form $R^{'}R^{''}C=C=O$ is known as ketene.

The given ketene is $C_2H_2O$ .

The number of valence electron of:

$C = 4$

$H = 1$

$O = 6$

The number of valence electrons in $C_2H_2O$ = $2\times 4+2\times 1+1\times 6 =16$

2 electrons are involved in each single bond between carbon and hydrogen and 4 electrons are involved in each double bond formed between carbon-carbon and carbon-oxygen. Hence, the total number of electrons involved in bond formation are 12 and rest 2 pair of electrons are present on oxygen as lone pair of electrons.

Therefore, the attached image is the Lewis structure of $C_2H_2O$ .

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3 years ago

Realizar un Experimento Teóricamente, considerando la definición de mezcla, dibuja y explicar de forma teórica su proceso de pre

Mrrafil [7]

Answer:

rffdf

Explanation:

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2 years ago