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2 years ago

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75

Chemistry

2 answers:

SpyIntel [72]2 years ago

6 0

Answer:

Solid

Explanation:

A solid maintains a constant shape and a constant volume.

B is wrong, because a liquid maintains its volume but assumes the shape of the container.

C is wrong, because a gas maintains neither a constant shape nor a constant volume.

Liono4ka [1.6K]2 years ago

6 0

Answer:

solid

Explanation:

First let's look at the difference between the states of matter

Most solids maintain their shape regardless of where they are contained

Liquids and gases take the form of the container that contains them

In addition the gases expand their volume and tend to occupy the entire surface where they are contained

For example, if we have a certain volume of water in a square container, the water will have this shape

If we take the same volume and place it in a spherical container it will stop being square and will adapt to the spherical shape

At the beginning it is placed in a square box and they tell us that it maintains its spherical shape then it is contained in a spherical container and maintains its shape and volume

It maintains its shape and volume regardless of the container that contains it, therefore it is in a solid state

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Answer:

I believe it is a Nose piece

Explanation:

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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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2 years ago

12) _Na+ _H2O → ___ NaOH + __H2

TEA [102]

Answer:

Explanation:

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2 years ago

What volume of a 1.0 M HCl is required to completely neutralize 25.0 ml of a 1.0 M KOH?

kirza4 [7]

The question above can be solved by using this equation:
CAVA =CBVB
Where:
CA =Concentration of acid = 1.0 M
VA = Volume of acid = ?
CB = Concentration of base = 1.0 M
VB = Volume of base = 25 ml
VA = CBVB / CA
VA = [1 * 25] / 1 = 25 / 1 = 25
VA = 25 ml
Therefore, the volume of acid that is required to completely neutralize the base is 25 ml.

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Describe how you could use two LB/agar plates, some E. coli, and some ampicillin to determine how E. coli cells are affected by

KiRa [710]

Answer:

For this experiment we are going to take plate 1 as the control plate, so, in it there will be just E. coli in LB/agar; in plate 2, we are going to put E. coli in LB/agar and some ampicillin. Then, we have to wait for the E. coli colonies to form. After a while, the E. coli growth can be compared on both plates and determine if ampicillin affects or not the E. coli colonies.

Explanation:

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