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nikitadnepr [17]
3 years ago
13

Why does a solid change to a liquid when heat is added

Chemistry
2 answers:
Katen [24]3 years ago
6 0
When heat is added it is adding more energy to the solid. The molecules in the solid start to vibrate faster and are able to move around, which means the solid is melting to form a liquid.
Nata [24]3 years ago
4 0
Particles will have more energy and will vibrate really fast.

(Hope this helps)
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<h3><u>Answer;</u></h3>

It makes the reaction harder to start

<h3><u>Explanation</u>;</h3>
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Please help me with this question
vampirchik [111]

Remember that

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#1

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Carbon is present so it's covalent

#2

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#3

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7 0
1 year ago
How many molecules are in 3.6 grams of NaCl?
raketka [301]

Answer:

\boxed{\text{None}}

Explanation:

There are no molecules in NaCl, because it consists only of ions.

However, we can calculate the number of formula units (FU) of NaCl.

Step 1. Calculate the moles of NaCl

\text{No. of moles}=\text{3.6 g NaCl}\times \dfrac{\text{1 mol NaCl}}{\text{63.54 g NaCl}} = \text{0.0567 mol NaCl}

Step 2. Convert moles to formula units

\text{FU} = \text{0.0567 mol NaCl} \times \dfrac{6.022 \times 10^{23}\text{ FU NaCl}}{\text{1 mol NaCl}}\\\\= 3.4 \times 10^{22} \text{ FU NaCl}

There are \boxed{3.4 \times 10^{22} \text{ FU NaCl}} in 3.6 g of NaCl.

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