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Trava [24]
3 years ago
14

Balance this chemical equation. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

ent is "1."
Choose... H 2 O 2 → Choose... H 2 O + Choose... O 2
Chemistry
1 answer:
larisa86 [58]3 years ago
8 0
The first one have a nice day and good luck
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How does the number of subatomic particles change as the carbon isotope<br> decays?
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Answer:

Explanation:

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2 years ago
2NBr3 + 3NaOH = N2 +3NaBr + 3HOBr
bija089 [108]
The theoretical proportion is given by the balanced chemical equation:

2 mol NBr / 3 mol  Na OH

Then x mol NaOH / 40 mol NBr3 = 3mol NaOH/2 mol NBr3

Solve for x, x = 40 * 3/2 = 60 mol NaOH.

Given that there are 48 mol NaOH (less than 60) this is the limitant reactant and the other is the excess reactant.

Answer: NBr3..

 
6 0
2 years ago
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Which equation agrees with ideal gas law?
Julli [10]
Https://www.gstatic.com/education/formulas2/355397047/en/boyle_s_law.svg
8 0
2 years ago
An aqueous solution of calcium hydroxide is standardized by titration with a 0.112 M solution of hydrobromic acid. If 15.2 mL of
TiliK225 [7]

Answer:

0.0457 M

Explanation:

The reaction that takes place is:

  • 2HBr + Ca(OH)₂ → CaBr₂ + 2H₂O

First we<u> calculate how many moles of acid reacted</u>, using the <em>HBr solution's concentration and volume</em>:

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Now we <u>convert HBr moles to Ca(OH)₂ moles</u>, using the stoichiometric ratio:

  • 1.389 mmol HBr * \frac{1mmolCa(OH)_{2}}{2mmolHBr} = 0.6944 mmol Ca(OH)₂

Finally we <u>calculate the molarity of the Ca(OH)₂ solution</u>, using the <em>given volume and calculated moles</em>:

  • 0.6944 mmol Ca(OH)₂ / 15.2 mL = 0.0457 M
7 0
2 years ago
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