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3 years ago

All organic molecules have what element in common

Chemistry

2 answers:

joja [24]3 years ago

6 0

Every organic molecules/compound contains carbon (c).

Some other very abundant are hydrogen, nitrogen, oxygen, phosphorus, and sulfur.

I learned this with the acronym CHNOPS.

C - Carbon

H - Hydrogen

N - Nitrogen

O - Oxygen

P - Phosphorus

S - Sulfur

Hope this helps!

kari74 [83]3 years ago

6 0

Answer: The elements which are common for all organic molecules is hydrogen and carbon.

Explanation:

Another name for organic molecules are hydrocarbons. This means that the molecules which consist of hydrogen and carbon atoms is an organic compound.

For Example:

$H_2O\text{ and }CO_2$ are not organic compounds, because in water, carbon is not there and in carbon dioxide, hydrogen is not there. But, $CH_4$ is an organic compound because hydrogen and carbon both are present.

Hence, hydrogen and carbon elements are common to all organic molecules.

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Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volume at the same temperature. Tell whether each of th

Hoochie [10]

Answer:

c. The N2 molecules collide more frequently with the walls of the flask than do the Ar atoms.

Explanation:

The statements are:

a. There are more molecules of N2 present than atoms of Ar. FALSE. Because 1 mol of molecules of N2 = 28g and 1 mol of molecules of Ar = 40g. As there are equal MASSES, you will have more molecules of N2 than Ar molecules

b. The pressure is greater in the Ar flask. FALSE

Because pressure is directly proportional to amount of molecules. As molecules N2 > Molecules Ar. The pressure is greater in N2 flask

c. The N2 molecules collide more frequently with the walls of the flask than do the Ar atoms. TRUE

The collision probability of N2 is higher because there are more molecules presents

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3 years ago

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MariettaO [177]

Answer:

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2. Cytotoxic T cell is also a type of white blood cell that Kills cancer cells and virus infected body cells.

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3 years ago

Why is energy required to remove an electron from an atom?

Yanka [14]

Electrons in an atom are held there by the force of attraction exerted by the positive charge of the nucleus on the negative charge of the electron. Energy is required to remove an electron from atom to overcome this attractive force.

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3 years ago

what type of element can turn into both solid and liquid form depending on the temperature of its surroundings ?

lorasvet [3.4K]

Answer:

An Atom can turn into both solid and liquid form depending on the temperature of its surroundings

Explanation:

Scientists have discovered a new state of physical matter in which atoms can exist as both solid and liquid simultaneously. Researchers have found, however, that some elements can, when subjected to extreme conditions, take on the properties of both solid and liquid states.

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3 years ago

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Which statements best describe conduction? Check all that apply.

Gennadij [26K]

The statements that best describe conduction are

-Conduction can occur within a substance or between two substances.

-Fast-moving molecules collide with slow-moving molecules.

-Thermal energy is transferred from a warmer substance to a cooler substance.

Explanation :

-Conduction can occur within a substance or between two substances.

Conduction can occur within a substance, but the heat will transfer by conduction only when those parts of the substance are at different temperatures.

For example, when we hold a metal rod over a flame, the end which is in direct contact with the flame becomes hot first. As we continue to heat, the other end of the rod also becomes hot because heat gets transferred through the rod by conduction.

Similarly heat can also be transferred between 2 substances which are in direct contact with each other.

In the above example, when a person is holding the other end of the rod, their hand might burn. In this case heat is transferred between 2 objects ( rod & hand) which are in direct contact by conduction.

-Fast-moving molecules collide with slow-moving molecules.

When an object heated, the molecules gain thermal energy and start vibrating. These vibrating molecules transfer their kinetic energy to neighboring molecules which are at lower temperature and hence are slow moving. This transfer occurs till both of them attain the same temperature.

-Thermal energy is transferred from a warmer substance to a cooler substance.

Thermal energy is always transferred from a warmer substance to a cooler substance. In conduction mode, heat is transferred by transfer of kinetic energy from fast moving molecules to slow moving molecules.

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4 years ago

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