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Paha777 [63]
3 years ago
15

3. Heating the copper product at too high a temperature in an oxygen atmosphere results in the formation of copper( )oxde, . Wri

te the balanced equation for this reaction.
Chemistry
1 answer:
olya-2409 [2.1K]3 years ago
6 0
First, write the equation:
Cu + O2 -> CuO
Now, balance:
2 Cu + O2 -> 2 CuO
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Help??
kvasek [131]

Answer:

Mass of sodium chloride decomposed = 24.54 g

Explanation:

Given data:

Mass of sodium chloride decomposed = ?

Mass of chlorine gas formed = 15 g

Solution:

Chemical equation:

2NaCl      →         2Na + Cl₂

Number of moles of Cl₂:

Number of moles = mass/molar mass

Number of moles = 15 g/ 71 g/mol

Number of moles = 0.21 mol

Now we will compare the moles of Cl₂ with NaCl from balance chemical equation.

                    Cl₂            :              NaCl

                      1              :                2

                      0.21         :            2×0.21 = 0.42 mol

Mass of Sodium chloride decompose:

Mass = number of moles × molar mass

Mass = 0.42 mol × 58.44 g/mol

Mass = 24.54 g

4 0
3 years ago
Which is one way that analyzing ice benefits scientists who study ancient climates?
Ludmilka [50]

Answer:

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7 0
3 years ago
One type of static electricity is the lightning in a thunder and lightning storm. Clouds become negatively charged as ice
Luden [163]

Answer:

The last answer would be correct because if you have ever done it before you would know that rubbing your feet (just like the rubbing of ice crystals) on the carpet will create the energy you need, then once you touch the metal it creates that spark!

Explanation:

hoped that helped-I would be thankful for brainliest ;)

4 0
3 years ago
I need help on my homework I don’t know this answer
Tems11 [23]

Answer:

I believe the answer would be

b.) valence electrons, all thw electrons that surround the nucleus of an atom

Explanation:

You're welcome

8 0
3 years ago
5
Rufina [12.5K]

Answer:

massive flooding occurs in may at this location

Explanation:

i did the quiz idk if its right though :/

5 0
4 years ago
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