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3 years ago

WHAT IS THIS SYMBOL AND HOW DO I FIND THIS?

Chemistry

1 answer:

Gekata [30.6K]3 years ago

5 0

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Which property do metalloids share?

uranmaximum [27]

Metalloids share many similar properties including: They appear to be metal in appearance, but are brittle. They can generally form alloys with metals. Some metalloids such as silicon and germanium become electrical conductors under special conditions. Mark me brainliest please

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3 years ago

14. What are the different types of river in Nepal ?explain them briefly

Stella [2.4K]

Answer:

Explanation:

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3 years ago

What are the sub-particles that make up an atom? (select all that apply) *?

Mrac [35]

The answer should be neutrons electrons and protons

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4 years ago

Why might Marie Curie have been motivated to teach the children of beet workers?

pav-90 [236]

Marie curie worked as a governess and she was awarded noble prize for her discoveries.

Explanation:

When Marie curie worked as a governess for three years her employer allowed her to teach reading to the children of peasant workers at his beet sugar factory. This was banned under Russian rule. During that time she studied chemistry lessons from her father by mail.

Marie curie was awarded the Noble prize in chemistry for her discoveries and studies of elements radium and polonium. She is the only women who is awarded the Noble prize twice.

She made her first research into the treatment of tumors with radiation and founded a Curie institutes, that are important medical research centers.

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3 years ago

Classify methanal according to the position of the c=o group

seraphim [82]

Answer : Methanal also known as Formaldehyde $CH_{2}O$ is a chemical Aldehyde which contain ( -CHO) group.

Explanation :

In organic chemistry, a carbonyl group is a functional group which contain a carbon atom double-bonded to an oxygen atom i.e, ( C=O).

If carbonyl group is present in a compound then it can be a carboxylic (RCOOH), aldehyde (RCHO), ketone (RCOR'), ester ((RCOOR') or amide (RCONR'R") group.

Here are some functional groups naming according to the<em> IUPAC</em> rules and image also attached,

Carboxylic acid → (RCOOH) → ( name end in 'OIC ACID' )

Aldehyde → (RCOH) → ( name end in 'AL' )

Ketone → (RCOR') → ( name end in 'ONE' )

Ester → (RCOOR') → ( name end in 'ATE' )

Amide → (RCONR'R") → ( name end in 'AMIDE' )

In an aldehyde, atleast one hydrogen atom must be attached to the carbonyl carbon. For an aldehyde, remove ( -e) from alkane name and add ( -al) at the end of the compound.

Methanal is the IUPAC name for Formaldehyde.

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4 years ago