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Westkost [7]
2 years ago
11

An unbalanced chemical equation is shown: 2NaN3 → 2Na + N2 Which of the following statements explains why the equation is not ba

lanced? (4 points)
Chemistry
2 answers:
morpeh [17]2 years ago
8 0

Answer:

When you fill in 2 reactants, you will have 6 N atoms but on the side of the product there are only 2 N atoms, so the equation cannot be balanced and for the equation to be equal, you need to fill 3 into the part N2 to have 6 N atoms

Explanation:

sashaice [31]2 years ago
6 0

Explanation:

2NaN3 => 2Na + N2

There are 6 nitrogen atoms on the left side but only 2 nitrogen atoms on the right side.

The equation would be balanced if there was a "3" infront of N2.

You might be interested in
5. How can you tell the difference between CuS and Cu2S
puteri [66]

Answer:

Density, melting point. and magnetic properties  

Explanation:

I can think of three ways.

1. Density

The density of Cu₂S is 5.6 g/cm³; that of CuS is 4.76 g/cm³.

It should be possible to distinguish these even with high school equipment.

2. Melting point

Cu₂S melts at 1130 °C (yellowish-red); CuS decomposes at 500 °C (faint red).

A Bunsen burner can easily reach these temperatures.

3. Magnetic properties

You can use a Gouy balance to measure the magnetic susceptibilities.

In Cu₂S the Cu⁺ ion has a d¹⁰ electron configuration, so all the electrons are paired and the solid is diamagnetic.

In CuS the Cu²⁺ ion has a d⁹ electron configuration, so all there is an unpaired electron and the solid is paramagnetic.

A sample of Cu₂S will be repelled by the magnetic field and show a decrease in weight.

A sample of CuS will be attracted by the magnetic field and show an increase in weight.

In the picture below, you can see the sample partially suspended between the poles of an electromagnet.

 

6 0
3 years ago
Which statement is true in comparison to a weak acid, a strong acid
Allushta [10]

Answer: Strong acid vs weak acid

Strong acids and strong bases refer to species that completely dissociate to form ions in solution.

Explanation: By contrast, weak acids and bases ionize only partially, and the ionization reaction is reversible. Thus, weak acid and base solutions contain multiple charged and uncharged species in dynamic equilibrium.

7 0
2 years ago
What is the electron configuration of bromine whose atomic number is 35
Vanyuwa [196]
1s22s22p63s23p64s23d104p5 is the answer
5 0
3 years ago
Steel is an example of a pure substance because it is made up of two different metals melted together. (4 points) True False
Lunna [17]

Answer:

false

Explanation:

3 0
3 years ago
Match these items
masha68 [24]
The correct matches are as follows:

<span>1.instantaneous combustion 
</span>G.burning<span>

2.mass of substances before and after a reaction is the same
</span>C.Law of Conservation of Matter<span>

3.substances that combine
</span>A.reactants
<span>
4. Yields or makes
</span>B.arrow symbol 
<span>
5.rapid oxidation
</span>F.explosion<span>

6.new substance
</span>D.product
<span>
7.slow oxidation
</span>E.rust
<span>
Hope this answers the question. Have a nice day.

</span>
4 0
3 years ago
Read 2 more answers
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