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Rasek [7]
3 years ago
10

Pls Answer ASAP!!! Need to turn in in 5mins!!!

Chemistry
1 answer:
Citrus2011 [14]3 years ago
4 0

Answer:

Sulfur

Explanation:

I'm sorry I was too late!

If there is an excess of a substance in a reaction, then there is more than enough to complete the reaction. This means that, because we have a specific amount of sulfur, it has to be the limiting reagent.

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When baking soda (sodium bicarbonate or sodium hydrogen carbonate, NaHCO3) is heated, it releases carbon dioxide gas, which is r
MariettaO [177]

Answer:

a. NaHCO₃ + HCl → NaCl + H₂O + CO₂

b. 39.14 g is the mass of NaHCO₃ required to produce 20.5 moles of CO₂

Explanation:

A possible reaction for NaHCO₃ to make dioxide is this one, when it reacts with hydrochloric to produce the mentioned gas.

NaHCO₃ + HCl → NaCl + H₂O + CO₂

Ratio in this reaction is 1:1

So 1 mol of baking soda, produce 1 mol of CO₂

Let's calculate the moles

20.5 g CO₂ / 44 g/m = 0.466 moles

This moles of gas came from the same moles of salt.

Molar mass baking soda = 84 g/m

Molar mass . moles = mass

84 g/m .  0.466 moles = 39.14 g

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4 years ago
No. free poijnts ,,,,,,,
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Answer:

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3 years ago
To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure?
stich3 [128]
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<span>Dot structures only show the valence electrons of an atom which are the electrons found at the outermost shell. The orbital notation gives a more detailed depiction of the electrons in each shell. This is most advantageous for atoms that have special cases. </span>

<span>Some examples of atoms that have special electronic configurations are copper and chromium. For example, copper is more stable when the 3d subshell is completely filled. This leaves the 4s subshell with only 1 electron. Chromium is also more stable when its s and d subshells are only half full. The orbital notation depicts these special cases, whereas the dot structure does not.</span>
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Answer:

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Explanation:

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3 years ago
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