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wolverine [178]
3 years ago
7

Choose the pure substance from the list below. Choose the pure substance from the list below.

Chemistry
1 answer:
Vesnalui [34]3 years ago
7 0

Answer:

carbon monoxide is a pure substance because it cannot be separated by any physical method.

Explanation:

A pure substance is also known as chemical substance, it is a form of matter having constant chemical composition and characteristic properties.

Also a pure substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.

A mixture of milk and water (tea) can be separated by filtration (physical method).

A mixture of of sugar and water can be separated by distillation (physical method).

Also a casserole, pomegranate juice are separated using physical methods.

However, carbon monoxide constant chemical composition and characteristic properties, and it cannot be separated by physical method.

Therefore, carbon monoxide is a pure substance.

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Using are organic compounds made by living things
DaniilM [7]

Answer:

The chemical compounds of living things are known as organic compound because of their association with organisms and because they are carbon-containing compounds, which are the compounds associated with life processes, are the subject matter of organic chemistry

7 0
2 years ago
Two or more assistance
Goryan [66]
I believe it would be a compound.
4 0
3 years ago
The force of 75 N must overcome in order to get the truck to start moving. What type of friction must be overcome?
Tamiku [17]

Answer:

Static Friction.

Explanation:

Friction is the force that resists the relative motion between the surfaces sliding against each other.

Static friction is friction between objects that are not in relative motion with each other.

The coefficient of static friction, typically denoted as  μs,

Static friction arises due to surface roughness( relative term)

The static friction force can be overcome by an applied  maximum force

F max =  μs x N

N= normal force

Any force smaller than F max attempting to slide one surface over the other is opposed by a frictional force of equal magnitude and opposite direction.

Any force larger than F max overcomes the force of static friction and causes sliding to occur.

This maximum force is sometimes called the limiting value also. Here that value is 75 N.

3 0
3 years ago
Rhenium (Re) is made up of 37.4% 185Re and 62.6% 187Re. The atomic mass of 185Re is 184.953 amu. The atomic mass of 187Re is 186
Anna007 [38]
To calculate the average mass of the element, we take the summation of the product of the isotope and the percent abundance. We calculate as follows:

Average atomic mass = .374 ( 184.953 amu ) + .626 ( <span>186.958 amu )  = 186.208 amu

Hope this answers the question. Have a nice day.</span>
8 0
3 years ago
Read 2 more answers
Continents motion on earth is
Kisachek [45]
The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth's mantle below the crust. Earthquakes and volcanoes are the short-term results of this tectonicmovement. The long-term result of plate tectonics is the movement of entire continents over millions of years
8 0
3 years ago
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