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timofeeve [1]
2 years ago
5

Write and balance sodium when it burns in air to form sodium peroxide​

Chemistry
1 answer:
Zanzabum2 years ago
7 0

Answer:7.229 grams of oxygen is formed by the complete reaction of 35.23 g of metallic sodium with oxygen at 130–200 °C, a process that generates sodium oxide, which in a separate stage absorbs oxygen: 4 Na + O2 → 2 Na2O. The ozone oxidizes the sodium to form sodium peroxide.

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4 years ago
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4 0
2 years ago
At 25oC, three moles of a gas occupy a volume of 4.0 L at 1.9 kPa. If the volume increases to 12.0 L, what will the new pressure
givi [52]
The answer:
according to Boyle's law concerning Pressure (P), Volume (V), Temperature (T) and number of mole (n) , we have the famous formula:

PiVi = Pf Vf, 

Pi=1.9kPa
Vi= 4L
Vf = 12L
T=25
n=3 
Pf = ?
let's find the value of Pf
from the equation
PiVi   = Pf Vf  we can have Pf= PiVi  / Vf

Pf = 1.9*4 / 12 = 0.63

so the answer is <span>B. 0.63 kPa</span>


4 0
3 years ago
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Someone pls help me I will make you brain
Katena32 [7]

Answer:

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Explanation:

4 0
3 years ago
A buffer is prepared by mixing 50.3 mL of 0.183 M NaOH with 128.8 mL of 0.231 M acetic acid. What is the pH of this buffer
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Answer:

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Explanation:

7 0
3 years ago
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