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liq [111]
2 years ago
6

Which substance cannot be separated physically or chemically? a solution an element a compound a mixture

Chemistry
2 answers:
Katena32 [7]2 years ago
8 0

Answer:

An element

Explanation:

Elements are not able to be separated, but everything else can, whether that be physically or chemically.

damaskus [11]2 years ago
4 0

<u>Answer:</u> The substance that cannot be separated physically or chemically is an element.

<u>Explanation:</u>

For the given options:

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. They can be separated by physical means.

An element is defined as the substance which is made of similar kind of atoms. All the atoms in an element have same atomic number. The atoms cannot be separated by any physical or chemical means.

Compound is defined as a chemical specie which is made by the combination of different atoms. For Example:  NH_3,CO_2 etc.. The atoms in a compound can be chemically separated.

A mixture is defined as the substance which is made by mixing two or more substances in any ratio.  They can be separated by physical means.

Hence, the substance that cannot be separated physically or chemically is an element.

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Answer:

There was a change in temperature on the surface you were walking on. It is possible that "you" were walking on cool, wet sand and when your parents said it was time to leave, you ran barefoot towards the parking lot (away from the sand) and got a burning coal sensation on your feet.

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5 0
3 years ago
Describe the separation technique that could be used to separate two colorless liquids with varying boiling points.
Over [174]
Distillation; either simple or fractional macroscale depending on how far apart the boiling points are. 
3 0
3 years ago
The chemical equation below shows the decomposition of nitrogen triiodide (NI3) into nitrogen (N2) and iodine (I2). 2NI3 Right a
yuradex [85]

The moles of I₂ will form from the decomposition of 3.58g of NI₃ is 0.0136 moles.

<h3>How we calculate moles?</h3>

Moles of any substance will be calculated as:

n = W/M, where

W = required mass

M = molar mass

Given chemical reaction is:

2NI₃ → N₂ + 3I₂

Moles of 3.58g of NI₃ will be calculated as:

n = 3.58g / 394. 71 g/mol = 0.009 moles

From the stoichiometry of the solution, it is clear that:

2 moles of NI₃ = produce 3 moles of I₂

0.009 moles of NI₃ = produce 3/2×0.009=0.0136 moles of I₂

Hence, option (3) is correct i.e. 0.0136 moles.

To know more about moles, visit the below link:

brainly.com/question/15303663

8 0
2 years ago
NEED QUICK ANSWERS ( science)
nata0808 [166]

Answer:

Explanation:

"Nature does this job through a process called the water cycle. Also known as hydrologic cycle, the water cycle is a phenomenon where water moves through the three phases (gas, liquid and solid) over the four spheres (atmosphere, lithosphere, hydrosphere and biosphere) and completes a full cycle. The water cycle has many effects: it regulates the temperature of the surroundings. It changes weather and creates rain. It helps in conversion of rocks to soil. It circulates important minerals through the spheres. It also creates the many geographical features present on earth like the ice caps of mountains, icebergs, the rivers and the valleys, lakes, and more. Hence it is quite important to understand and learn the processes of the water cycle."

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2 years ago
Which of the following elements has the highest electronegativity?
Nastasia [14]

Answer: is c

Explanation:

8 0
3 years ago
Read 2 more answers
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