3 years ago

I need Coefficient numbers!!!!!

1 answer:

4 0

Not sure about #6 , but i got all the other answers

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olya-2409 [2.1K]

Each mole of a substance contains 6.02 x 10²³ particles
Atoms of Fe = 4.5 x 6.02 x 10²³
= 2.709 x 10²⁹ atoms

7 0

3 years ago

monitta

A.
The first energy level has 2 electrons, the second has 8, and the third has 4

5 0

4 years ago

Rus_ich [418]

Answer:

3 moles of $Cl^{-}$ is needed for $Na^{+}$ to be fully consumed.

Explanation:

For the balanced equation:

$Na^{+} + Cl^{-}$ ⇒ $NaCl$

First, find the moles of Na corresponding to the 69g used the general definition of mol:

$mol Na^{+} = \frac{69 g}{23 g/mol } = 3mol$

We observe that the equation is balanced and the stoichiometric ratio between them is 1: 1.

According to this, one mole of Na will react with one mole of Cl.

3 moles of $Cl^{-}$ is needed for $Na^{+}$ to be fully consumed.

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3 years ago

solong [7]

Yield is the measured amount of a product obtained from a reaction.

Hope that's helpful

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4 years ago

sergiy2304 [10]

Option B. Humus. Its dark color is due to the high content of carbon.

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3 years ago