4 years ago

What information does the spectrum give about the source of the element?

1 answer:

3 0

Answer:

A continuous spectrum can identify elements by the presence of dark bands, and it also tells scientists how hot the object is: As the temperature goes up, the spectrum has increasing amounts of green, blue and violet colors. Relatively cool objects have a spectrum that has mostly deep red or red and yellow.

Explanation:

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Which chemical equation correctly represents the reaction that takes place when nitrogen gas and hydrogen gas are formed as ammo

Dima020 [189]

Answer:

D. 2NH₃(g) ⟶ N₂(g) + 3H₂(g)

Explanation:

A chemical equation must show the correct formulas for reactants and products.

A and B are wrong, because they have NH₃ as a product.

C is wrong. H₃ does not exist.

A is correct. The equation for the decomposition of ammonia is

2NH₃(g) ⟶ N₂(g) + 3H₂(g)

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Answer:

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Explanation:

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3 years ago

1 mole = _____________________ _________________ particles

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1 mole = 6.02 * 10^23 atoms

This is known as Avogadro's Number. This value is approximate.

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