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Vlad1618 [11]
3 years ago
8

Velocity requires which 2 things?

Chemistry
2 answers:
Nezavi [6.7K]3 years ago
6 0
Its b ()(-(/(:)/(/;:
scoundrel [369]3 years ago
5 0
Direction and speed. Explanation: Velocity is a vector quantity, meaning that direction matters as opposed to speed, which is a scalar quantity.
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Urea makes up a significant amount of urine, and is the chemical that the body uses to rid cells of unwanted carbon dioxide and
Ira Lisetskai [31]
Urea is highly soluble in water. When it is allowed to dissolve in water in the presence of heat, it will yield ammonia and carbon dioxide. The reaction is shown below:

<span>NH2-CO-NH2 + H2O </span>⇒ 2 NH3 + CO2

As you can observe in the stoichiometric equations, 1 molecule of water can dissolve with 1 mole of urea.
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Why does an exothermic reaction need activation energy?
andrey2020 [161]

Answer:

Activation energy is needed so reactants can move together, overcome forces of repulsion, and to begin breaking bonds.

Explanation:

6 0
3 years ago
How moles are there in 15 grams of SiO2
BigorU [14]
The answer you’re looking for is 0.250
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3 years ago
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professor190 [17]

the pancreas and the liver

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Draw a structural formula for the alkene you would use to prepare the alcohol shown by hydroboration/oxidation.
Nastasia [14]

Answer:

See explanation

Explanation:

The question is incomplete because the image of the alcohol is missing. However, I will try give you a general picture of the reaction known as hydroboration of alkenes.

This reaction occurs in two steps. In the first step, -BH2 and H add to the same face of the double bond (syn addition).

In the second step, alkaline hydrogen peroxide is added and the alcohol is formed.

Note that the BH2 and H adds to the two atoms of the double bond. The final product of the reaction appears as if water was added to the original alkene following an anti-Markovnikov mechanism.

Steric hindrance is known to play a major role in this reaction as good yield of the anti-Markovnikov like product is obtained with alkenes having one of the carbon atoms of the double bond significantly hindered.

5 0
3 years ago
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