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eimsori [14]
4 years ago
8

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]4 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]4 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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if .00327 g of gas dissolves in .376 L of water at 876 torr what quantity of this gas will dissolve 759 torr ?
MAXImum [283]

Answer:- Solubility of the gas at 759 torr is 0.00753 g/L.

Solution:- From given data, 0.00327 g of gas is soluble in 0.376 L of water at 876 torr.

Solubility of gas at 876 torr pressure is = 0.00327g/0.376L = 0.00869 g/L

Solubility of gases is directly proportional to the pressure. It means, grater is the pressure, more is the solubility of gases.

So, 0.00869/876 = X/759

Where, X is the solubility of the gas at 759 torr.

X = 0.00869(759)/876

X = 0.00753 g/L

4 0
4 years ago
The volume of CO2 at 99.3 kPa was measured at 455 cm3. What will the volume be if the pressure is adjusted to 202.6 kPa?
Marizza181 [45]

Answer:

<h3>The answer is 223.0 cm³</h3>

Explanation:

To find the volume when the pressure is at 202.6 kPa we use Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question

P1 = 99.3 kPa = 99300 Pa

V1 = 455 cm³

P2 = 202.6 kPa = 202600

So we have

V_2 =  \frac{99300 \times 455}{202600}  =   \frac{45181500}{202600}  \\  = 223.008390...

We have the final answer as

<h3>223.0 cm³</h3>

Hope this helps you

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4 years ago
Which of these actions is the BEST evidence that waves can cause objects to move?
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The answer is C: A surfer rides back to the beach on his surf board.

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4 years ago
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Andrej [43]

<u>Answer:</u> The percentage abundance of _{29}^{63}\textrm{Cu} isotope is 69 %.

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i     .....(1)

We are given:

Let the fractional abundance of _{29}^{63}\textrm{Cu} isotope be 'x'

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Mass of _{29}^{63}\textrm{Cu} isotope = 62.93 amu

Fractional abundance of _{29}^{63}\textrm{Cu} isotope = x

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Mass of _{29}^{65}\textrm{Cu} isotope = 64.93 amu

Fractional abundance of _{29}^{63}\textrm{Cu} isotope = (1-x)

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Putting values in above equation, we get:

63.55=[(62.93\times x)+(64.93\times (1-x))]\\\\x=0.69

Converting this fractional abundance into percentage abundance by multiplying it by 100, we get:

\Rightarrow 0.69\times 100=69\%

Hence, the percentage abundance of _{29}^{63}\textrm{Cu} isotope is 69 %.

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