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AURORKA [14]
2 years ago
6

A group of students are wandering around a room. when their teacher claps, the students sit down wherever they are. this situati

on best models the formation of which type of solid?
Chemistry
2 answers:
Oksi-84 [34.3K]2 years ago
8 0

an amorphous solid because the particles do not have a regular structure is the answer

meriva2 years ago
3 0

Answer:

The correct answer is: Amorphous solid

Explanation:

Solid is a state of matter. The constituting particles of a solid are closely packed together and can be arranged in a <u>irregular pattern, thereby forming an amorphous solid</u>; or <u>ordered repeating pattern; which leads to the formation of a crystalline solid.</u>

An amorphous solid is formed by rapid cooling. Therefore, the constituting particles of an amorphous solid<u> lack long-range order </u>and thus have some short-range order.

<u>As in the given example, the randomly moving students sit suddenly at any random place. Therefore, it models the formation of an </u><u>amorphous solid</u><u>.</u>

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A 1.25 g gas sample occupies 663 ml at 25∘ c and 1.00 atm. what is the molar mass of the gas?
lakkis [162]

Using ideal gas equation,  

P\times V=n\times R\times T

Here,  

P denotes pressure  

V denotes volume  

n denotes number of moles of gas  

R denotes gas constant  

T denotes temperature  

The values at STP will be:  

P=1 atm  

T=25 C+273 K =298.15K

V=663 ml=0.663L

R=0.0821 atm L mol ⁻¹

Mass of gas given=1.25 g g

Molar mass of gas given=?

Number of moles of gas, n= \frac{Given mass of the gas}{Molar mass of the gas}

Number of moles of gas, n= \frac{1.25}{Molar mass of the gas}

Putting all the values in the above equation,

1\times 0.663=\frac{1.25}{Molar mass of the gas}\times 0.0821\times 298.15

Molar mass of the gas=46.15

3 0
2 years ago
The ________ orbital is degenerate with 5py in a many-electron atom.
arsen [322]

The ________ orbital is degenerate with 5py in a many-electron atom.


<h2>5px is the correct answer</h2>
5 0
2 years ago
Every single-celled organism is able to survive because it carries out *
deff fn [24]

Answer:

Every single celled organism is able to survive because it carries out metabolic activities.

Metabolic activity is a set of chemical reactions which are needed for an organism to maintain it's life

Explanation:

the various types of metabolic processes keep an organism alive. There are various types of metabolic processes that takes place in the body of living organism.

These are cellular respiration, reproduction, excretion, digestion et cetera. Every living cell has these processes going on in their body to keep them alive.

Living organism need energy to carry out these processes which they get by eating food.

Read more on Brainly.com - brainly.com/question/12186942#readmore

6 0
2 years ago
What is the theoretical yield of CuS when 31.8g of Cu(s) is heated with 50.0g of S? (Asume only CuS is produced in the reaction)
liberstina [14]

Answer:

The answer to your question is: 83.9 %

Explanation:

Data

Cu = 31.8 g

S = 50 g

CuS = 40 g

yield = ?

Equation

                     Cu +   S   ⇒  CuS

MW Cu = 64 g

MW S = 32 g

MW CuS = 96 g

Ratio (theoretical/experimental)

Experimental    50/31.8 = 1.57

Theoretical        32/64 = 0.5     limiting reactant Cu

                              64 g of Cu ------------------  96 g of CuS

                              31.8 g        -------------------    x

                              x = (31.8 x 96) / 64

                             x = 47.7 g of CuS

% yield = (40/47.7) x 100

            = 83.9 %

                         

6 0
2 years ago
Read 2 more answers
How many moles of BCl3 are needed to produce 10.0 g of HCl(aq) in the following reaction? (HCl molar mass is 36.46 g/mol).
Scilla [17]

Answer:

Moles of BCl₃ needed = 0.089 mol

Explanation:

Given data:

Moles of BCl₃ needed = ?

Mass of HCl produced = 10.0 g

Solution:

Chemical equation:

BCl₃ + 3H₂O  →     3HCl + B(OH)₃

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 10.0 g/ 36.46 g/mol

Number of moles = 0.27 mol

Now we will compare the moles of HCl with BCl₃.

               HCl             :           BCl₃

                 3               :             1

             0.27             :            1/3×0.27 = 0.089 mol

6 0
2 years ago
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