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3 years ago

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Flame tests are used to identify

2 answers:

Ipatiy [6.2K]3 years ago

8 0

Answer:

The flame test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color the salt turns the flame of a Bunsen burner. The heat of the flame excites the electrons of the metals ions, causing them to emit visible light.Nov 1, 2018

Explanation:

sergij07 [2.7K]3 years ago

4 0

Answer:

Explanation: The flame test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color.

Hope this helps

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How many liters of oxygen are required to react completely with 14.8 mol of Al?

Bond [772]

Answer:

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Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

4Al + 3O₂ ⟶ 2Al₂O₃

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1. Moles of O₂

$n = \text{17.4 mol Al}\times \dfrac{\text{3 mol O}_{2}}{\text{4 mol Al}}= \text{13.05 mol O}_{2}$

2. Volume of O₂

You haven't given the conditions at which the volume is measured, so I assume it is at STP (0 °C and 1 bar).

At STP the molar volume of a gas is 22.71 L.

$V = \text{13.05 mol}\times \dfrac{\text{22.71 L}}{\text{1 mol }}= \textbf{296 L}$

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Answer:

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