HELP HURRY 20 PTS I WILL GIVE

1 answer:

4 0

High frequency or high pitch you know whatever

theirs no air on the moon and sound cant travel through space

absorption and the movement was out of your mouth and into the pillow

refraction and they bounced of the walls in different directions

I hope that helped and was the answer you were looking for lol

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Write a balanced chemical equation for the standard formation reaction of solid calcium hydroxide .

AveGali [126]

Calcium Hydroxide (Ca(OH)2) can actually be formed by the reaction of Calcium Oxide (CaO) with water (H2O). The complete balanced chemical reaction is:

CaO + H2O --> Ca(OH)2

The subscript 2 in (OH) means that there are 2 O and 2 H on the product side. Hence, the equation is balanced already.

3 0

3 years ago

Compare the physical properties of two forms of carbon: diamond and graphite

Mariana [72]

Diamond and graphite are allotropes of carbon and have various differences in their physical properties.

Explanation:

Diamond:

It is crystalline in nature
Each Each C is $sp^{3}$ hybridized and forms 4 covalent binds with neighboring C atoms
The geometry is tetrahedral
C-C bond length is 154 pm
It has rigid covalent boning which is difficult to break.
It acts as an electric insulator

Graphite:

It has layered structure
Each C atom is sp2 hybridized and forms 3 sigma bonds with 3 other C atoms. Fourth electron forms pi bond.
The geometry is planar
C-C bond length is 141.5 pm
It is soft. Its layers can be separated easily
It is good conductor of electricity.

This is the comparison of the physical properties of two forms of carbon: diamond and graphite

5 0

3 years ago

Consider the motion diagram. It illustrates a car's velocity (V) and acceleration (A). The BEST description of a car’s velocity

Masja [62]

Answer:

wheres the diagram ?

Explanation:

4 0

3 years ago

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Studies reveal that during colder glacial periods, co2 levels ____ during warmer interglacial periods.

katovenus [111]

Studies reveal that during colder glacial periods, carbon dioxide levels were lower than during warmer interglacial periods. Glacial periods are intervals of time within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate between glacial periods.

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3 years ago

Which of the following lists the given objects in the correct mass order from lowest to highest?

Mrrafil [7]

Sorry no se inglés
Bdnnfncnfnfnfn

5 0

3 years ago