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ELEN [110]
3 years ago
5

I think this is Chemistry but it might be physics

Chemistry
1 answer:
arlik [135]3 years ago
8 0

Answer:

No it is not a physics because in this there is about classification of element so it is in chemistry that's why it is not physics.

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Determine which reaction has the highest activation energy
asambeis [7]

Answer:

        we need to look at what actually happens to reactant molecules during a chemical. in order for the reaction to take place , some or all of the chemical bonds in the reactants must be broken so that the new bonds, those of the products , can form.

6 0
3 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
4 years ago
How is a unit cell like a formula unit?
frutty [35]

Answer:

Understanding the unit cell of a crystalline solid will help you in determining the empirical formula of the ionic solid compound because they both represent the smallest portion of the whole crystalline solid proportion.

Explanation:

A unit cell is the smallest portion of a crystal lattice, that can show the 3 dimensional pattern of the whole crystal.A formula unit is the lowest whole number ratio of ions in a an ionic compound.By considering the smallest repeating units/ unit cell, you can describe the structure of a crystalline solid.Knowing this can help in determining the empirical formula of the ionic solid compound.

8 0
4 years ago
What does a Stationary object line look like?
Paladinen [302]

Answer:

Explanation:It looks like a graph. Google it!

5 0
3 years ago
Radon is: Select one: a. an alpha-emitting gas that penetrates the skin naturally. b. a naturally occurring gas produced during
inysia [295]

Answer:

A

Explanation:

Radon is an alpha emitter. It emits alpha particles giving off gamma ray. It is a radioactive byproduct of radium-222.

Radon also penetrates the skin. This is because radon is a gas and chemically unreactive with most materials, it moves easily through very small spaces, such as those between particles of soil and rock, to the soil surface

Option B is wrong. It is produced during radioactive decay of radium and not uranium.

Option C is wrong. Radon is not a metallic element.

Option D is wrong also. It is not produced from photochemical smog

Option E is wrong. This is an extension of option B. Uranium is generally used in nuclear plant operations and not radium

7 0
4 years ago
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