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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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Aluminum, sulfur, and chorine are elements found on the periodic table. Tests
hoa [83]
Aluminum is malleable and conducts Electricity
3 0
2 years ago
Because of the way Saturn is tilted, the planet experiences four different seasons. If each of the four seasons lasts an equal a
nalin [4]

Answer:

Saturn's orbit is 29.5 "Earth years" and if Saturn's four seasons last an equal amount of time, the approximate length would be 29.5 / 4

29.5 / 4 = 5.9

So each season on Saturn is 5.9 "Earth years" Long.

7 0
2 years ago
How many grams of iron(III) oxide (Fe(OH)3) may theoretically be produced from 85.0 g FeCl3?
Crank

Answer:

56.0 g

Explanation:

Calculation of the moles of FeCl_3 as:-

Mass = 85.0 g

Molar mass of FeCl_3 = 162.2 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{85.0\ g}{162.2\ g/mol}

Moles= 0.52404\ mol

According to the reaction:-

FeCl_3+3 NaOH\rightarrow Fe(OH)_3+3 NaCl

1 mole of FeCl_3 on reaction forms 1 mole of Fe(OH)_3

Also,

0.52404 mole of FeCl_3 on reaction forms 0.52404 mole of Fe(OH)_3

Moles of Fe(OH)_3  = 0.52404 moles

Molar mass of Fe(OH)_3  = 106.867 g/mol

Mass = Moles*Molar mass = 0.52404\times 106.867\ g = 56.0 g

8 0
3 years ago
What is the pH of an aqueous solution with [H3O+] = 6×10−12 M ?
hram777 [196]

Answer: pH = 10.92

Explanation:

To determine the pH of an aqueous solution, we use the following mathematical relation; pH = - log [H3O+]

                                           = - log (6 x 10∧ -12)

                                           = 12 - 1.08

                                   pH =  10.92

                                           

4 0
2 years ago
What element is stored in the shells and skeltyons of living organisims?
kykrilka [37]

Answer:

carbon

Explanation:

Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons. Other chemical processes create calcium carbonate in the water. The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.

8 0
2 years ago
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