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leonid [27]
3 years ago
8

Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.

Chemistry
2 answers:
Andreas93 [3]3 years ago
8 0

Answer:

15.63 moles of HgO are needed to produce 250.0 g of O_{2}

Explanation:

According to given balanced equation, 1 mole of O_{2} is produced from 2 moles of HgO.

Number of moles =\frac{mass}{molar mass}

So 250 g of O_{2} =\frac{250}{32}moles O_{2}

So moles of HgO needed =2\times \frac{250}{32}moles HgO

                                                   =15.63 moles HgO

____ [38]3 years ago
5 0
The answer to the question is C. 15.63
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Explanation:

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You measure salt water in a tank to have a density of 1.02 g/mL. A balloon weighs 2.0 g and you weights have a mass of 30.0 g ea
Elden [556K]

Weight of the balloon = 2.0 g

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4 0
3 years ago
Which lists mixtures, in order, from the smallest particles to the largest particles?
Kisachek [45]

Answer:

A. Solution, Colloid, Suspension

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4 0
3 years ago
Which of the following is the best explanation for why it is important to follow lab safety guidelines
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Answer:

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5 0
3 years ago
In the following reaction, how many grams of ammonia (NH3) will react with 27.8 grams of nitric oxide (NO)? 4NH3 + 6NO → 5N2 + 6
Rzqust [24]
<span>4NH</span>₃<span> + 6NO → 5N</span>₂<span> + 6H</span>₂<span>O

mol of NO  =  </span>\frac{mass of NO}{Molar Mass of NO}
 
                  =  \frac{27.8 g}{30.01 g / mol}
                   
                  =  0.93 mol

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If mol  of NO  =  0.93 mol

then mol of NH₃ = \frac{0.93 mol  *  2}{3}
                           
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Therefore B is the best answer





3 0
3 years ago
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