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Archy [21]
3 years ago
13

Oxygen has an atomic number of 8. in order to fill its outer electron shell, how many electrons does it need?

Chemistry
1 answer:
Lina20 [59]3 years ago
3 0
Oxygen has 8 electrons. On the outer ring, it has 6 valance electrons. It need 2 more valance electrons to be stable.
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2. The hydrogen and oxygen atoms chemically bond to form the
olasank [31]

Answer:

True.

Explanation:

hydrogen and oxygen=water or hydrogen oxide

H+O2=H2O.

5 0
3 years ago
C3H8 + 5O2 3CO2 + 4H2O
ZanzabumX [31]

Answer:

10

Explanation: 5 moles of Oxygen + 3moles of Oxygen from Carbondioxide + 2 moles of Oxygen from water

6 0
3 years ago
Why did geologists develop the geologic time scale?
Agata [3.3K]
Geologist invented the geologic time scale to keep track of older rocks that have been layered over by newer rocks due to sedimentation that comes from other areas.
Hope this helps
5 0
4 years ago
A gas has a volume of 300 mL in a rigid container at 50oC and 1.75 atm. What will be its pressure at 100K?
eduard

Answer:

Its pressure will be 0.54 atm at 100 K.

Explanation:

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

Gay-Lussac's law can be expressed mathematically as the quotient between pressure and temperature equal to a constant:

\frac{P}{T} =k

Studying two different states, an initial state 1 and a final state 2, it is satisfied:

\frac{P1}{T1} =\frac{P2}{T2}

In this case:

  • P1= 1.75 atm
  • T1= 50 °C= 323 K (being 0 C=273 K)
  • P2= ?
  • T2= 100 K

Replacing:

\frac{1.75 atm}{323 K} =\frac{P2}{100 K}

Solving:

P2= 100 k*\frac{1.75 atm}{323 K}

P2= 0.54 atm

<u><em>Its pressure will be 0.54 atm at 100 K.</em></u>

8 0
3 years ago
What is the reducing agent in the following reaction? <br><br> 2Na + 2H2O → 2NaOH + H2
Nimfa-mama [501]
Na is the reducing agent since it is being oxidized
5 0
3 years ago
Read 2 more answers
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