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KiRa [710]
3 years ago
7

In the equation E = mc2, what does c represent?

Chemistry
1 answer:
oksian1 [2.3K]3 years ago
8 0

Answer:

c is the speed of light

Explanation:

E: energy

m: mass

c2: speed of light squared

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Classify these substances? More than one answer may apply in each case.
dalvyx [7]

Answer:

N2 element, pure substance

O2 element, pure substance

N2O Compound, pure substance

Air  (mostly N2 and O2 ) homogeneous mixture

Explanation:

N2, Nitrogen is known as the chemical element that is characterized by having atomic number 7 and that is symbolized by the letter N, in its molecular version, it is recognized as N2.

O2, Oxygen is the chemical element of atomic number 8, this molecular form is composed of two atoms of this element.

A chemical element is a type of matter, consisting of atoms of the same class.

N2O, Nitrous oxide is formed by the union of two molecules of nitrogen and one of oxygen, which is considered a chemical compound since it is a substance formed by the chemical combination of two different elements of the periodic table.

A pure substance is one that cannot change state or divide into other substances, except for a chemical reaction.

Air (mostly N2 and O2 ),  it is a homogeneous mixture of gases that constitutes the earth's atmosphere. A homogeneous mixture is a type of mixture in which its components are not distinguished and in which the composition is uniform and each part of the solution has the same properties.

3 0
3 years ago
Which of the following describes a perpetual-motion machine?
makkiz [27]

Answer:

a motor that requires no energy input once it is running

5 0
3 years ago
Read 2 more answers
I need the answers? Pls help!
Vesnalui [34]
Im pretty sure its h2o so like the 2nd one
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The size of the object and the distance between the objects.
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What is the name of the polyatomic ion in the compound na2o2?
EastWind [94]
Sodium peroxide is the answer!
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