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Ivan
3 years ago
9

A sample of an oxide of nitrogen is found to contain 30.4% nitrogen. What is its empirical formula?

Chemistry
1 answer:
Fittoniya [83]3 years ago
8 0

Answer:

If nitrogen = 30.4% then oxygen = 100-30.4 = 69.6%

divide each % value by atomic mass

N = 30.4/14 = 2.17

O = 69.6/16 = 4.35

Divide each y smaller:

N = 2.17/2.17 = 1

O = 4.35/2.17 = 2

Explanation:

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Based on your understanding of how bond types influence a material’s properties, identify each of the following compounds as bei
siniylev [52]

Answer: The given compounds are identified as being made of ionic, covalent, or metallic bonds:

  • Steel - Metallic bonds
  • Propane - Covalent bonds
  • Calcium chloride - Ionic bonds
  • Water - Covalent bonds

Explanation:

A bond formed by transfer of electrons from one atom to another is called an ionic bond. An ionic bond is formed between a metal atom and a non-metal atom.

A bond formed by transfer of electrons from one atom to another is called a covalent bond. A covalent bond is formed between two or more non-metal atoms only.

Steel is actually an alloy of carbon and iron where there is less than 2% carbon, 1% manganese and small amounts of silicon, phosphorus, oxygen and sulphur are present.

When atoms of metals are held together then bond formed between these atoms is called metallic bond.

Hence, steel is made of metallic bond.

Chemical formula of propane is CH_{3}CH_{2}CH_{3} as there are only non-metal atoms are present. So, sharing of electrons takes place in such atoms due to which covalent bonding will be there.

Hence, propane is made up of covalent bonds.  

Calcium chloride contains a metal and a non-metal atom. This means that electrons are being transferred from calcium atom to the chlorine atom. Hence, bond present in calcium chloride is ionic bond.

Water has chemical formula H_{2}O. Since, non-metal atoms are present there so sharing of electrons takes place between hydrogen and oxygen atoms. Hence, covalent bond is present in water.

Thus, we can conclude that given compounds are identified as being made of ionic, covalent, or metallic bonds:

  • Steel - Metallic bonds
  • Propane - Covalent bonds
  • Calcium chloride - Ionic bonds
  • Water - Covalent bonds
7 0
3 years ago
What is the sum of protons and neutrons in an atomic nucleus?
Alexxandr [17]
The sum of protons and neutrons in an atomic nucleus would be the MASS NUMBER.
3 0
3 years ago
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The two major classes of telescopes are the _____ and the _____ telescope.
sukhopar [10]

Answer:

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Explanation:

4 0
3 years ago
A cubic object has a volume of 250 cm. What is its density if its mass is 5 points<br> 257.3 g?
ira [324]

Answer:

<h3>The answer is 1.03 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 257.3 g

volume = 250 cm³

We have

density =  \frac{257.3}{250}  \\  = 1.0292

We have the final answer as

<h3>1.03 g/cm³</h3>

Hope this helps you

8 0
3 years ago
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Minchanka [31]

Answer:

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Explanation:

I hope this helps :)

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