How many moles of oxygen are needed to completely react with 9.5 g of sodium

1 answer:

8 0

4 Na + O₂ = 2 Na₂O

4* 23 g Na --------> 16 g O₂
9.5 g Na ------------> ?

Mass of O₂ = 9.5 * 16 / 4 * 23

Mass = 152 / 92

Mass = 1.6521 g of O₂

Molar mass O₂ = 16.0 g/mol

1 mole O₂ ------------ 16.0 g
? mole O₂ ------------ 1.6521 g

mole O₂ = 1.6521 * 1 / 16.0

≈ 0.10325 moles of O₂

hope this helps!

You might be interested in

Which body system includes the lungs?m

Zanzabum

Answer: The respiratory system

Explanation: It includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth.

4 0

3 years ago

Define electron affinity

LekaFEV [45]

Electron affinity corresponds to the energy released when an electron is added to a neutral atom in the gas phase.

hope this helps!

8 0

3 years ago

The is the variable that gets measured

ddd [48]

Answer:

what? what's the full question?

5 0

3 years ago

During the distillation nitrogen gas is obtained first, then argon and oxygen. What can u say about the boiling points of these

svetlana [45]

Explanation:

The boiling point of liquid nitrogen, liquid argon, and liquid oxygen are -196°C, -186°C, and -183°C respectively. So, the correct order is nitrogen, argon, oxygen.

6 0

2 years ago

Read 2 more answers

Which of the following is not a physical property?

kozerog [31]

Answer: Reactivity is not a physical property, it is a chemical property.

Explanation:

Physical property is a value of matter that can be observed and measured without any change in composition of the matter. Examples of physical properties are color, combustion,melting point,boiling point,solubility, texture, appearance, polarity, odor,viscosity, density and many more.

Chemical properties are characteristics that are obvious or seen when substances undergo chemical reaction. Examples are reactivity,toxicity, acidity, flammability, and heat combustion.

5 0

3 years ago