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vaieri [72.5K]
3 years ago
12

Need answer please help out

Chemistry
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

Last one

Explanation:

There always has to be evidence to back that up.

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How many grams of solid iron will be produced from 32.1 grams of iron (III) oxide? Hint: Balance the equation first
Taya2010 [7]

Answer:

22.45g of Fe will be produced

Explanation:

The balanced reaction is:

Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂(g)

<em>Where 1 mole of Iron (III) oxide reacts with 2 moles of Iron</em>

<em />

To solve this question we have to find the moles of iron (III) oxide. With these moles and the balanced reaction we can find the moles of iron produced and its mass:

<em>Moles iron (III) oxide -Molar mass: 159.69g/mol-</em>

32.1g Fe₂O₃ * (1mol / 159.69g) = 0.201 moles Fe₂O₃

<em>Moles Iron:</em>

0.201 moles Fe₂O₃ * (2mol Fe / 1mol Fe₂O₃) = 0.402 moles of Fe

<em>Mass Fe -Molar mass: 55.845g/mol-</em>

0.402 moles of Fe * (55.845g/mol) =

<h3>22.45g of Fe will be produced</h3>
3 0
3 years ago
How many atoms of HCl are needed to produce 0.62 moles of hydrogen gas​
navik [9.2K]

Answer:

0.2 moles

Explanation:

7 0
3 years ago
Read 2 more answers
1. You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to
hoa [83]

Answer:

You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to determine which layer is the aqueous layer.

Explanation:

In the separating funnel, the liquid with less density exists at the top layer and the liquid with greater density will exist at the bottom layer.

To identify the aqueous layer, add a bit of water to the separating funnel.

Then, observe where the water will go and mix.

If it mixes with the bottom layer, then the bottom layer is the aqueous layer.

If water mixes with the top layer, then top layer is the aqueous layer.

3 0
3 years ago
1. Write the chemical equation when excess chloride ion is added to aqueous solution of cobalt chloride. Note observed color of
Aneli [31]

The element cobalt can form compounds in two different oxidation states, +2 and +3. 


The +2 state is more common.

The ion Co2+ (aq) is pink.

Other compounds of cobalt(II), which include both anhydrous Co2+ and complex ions, are commonly blue.

If an aqueous solution contains both cobalt(II) and chloride ions, the blue ion CoCl42- forms, in equilibrium with the pink Co2+ (aq) ion.

<span>CoCl42- (aq) <===========> Co2+ (aq) + 4Cl1-(aq)</span>

5 0
3 years ago
Which of the following best describes a metallic bond?
Nitella [24]

Answer:the attraction between positive metal ions and interlocking electrons

Explanation: because I got it right

4 0
3 years ago
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