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3 years ago

An unknown substance is heated from 10 °C to 25 °C. The table below shows the state of the substance at different temperatures.

Chemistry

2 answers:

bezimeni [28]3 years ago

7 0

Answer:

Its melting point is 17 °C.

Explanation:

The melting point of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium.

<em>So, the melting point is 17 °C.</em>

And this is shown in the figure attached.

astraxan [27]3 years ago

7 0

Answer:

someone already said it but the melting point is 17 degrees c

Explanation:

hope it helps :))))

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Physical science!!! please help

IgorLugansk [536]

Answer:

The correct answer is : No, because there are 4 hydrogen atoms on the reactants side and 2 on the products side.

Explanation:

$NH_4NO_3\rightarrow N_2O+H_2O$

The given reaction equation is not balanced because:

Number of hydrogen atoms on both sides are not equal that is 4 on reactants side and 2 on products side.
Number of oxygen atoms on both sides are not equal that is 3 on reactants side and 2 on products side.

In a balanced chemical equation number of atoms of each elements are equal on both sides.

So, the balanced chemical equation will be:

$NH_4NO_3\rightarrow N_2O+2H_2O$

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3 years ago

The rows of the periodic table are called groups because similar elements reside next to each other on the modern periodic table

forsale [732]

Answer:

True

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

3 0

3 years ago

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Zanzabum

Explanation:

1. volume

2. pressure

3. moles

4. temperature

5. temperature

6. moles

7. pressure

8. volume

9. pressure

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2 years ago

A type of emergency apparatus that can be used where oxygen may be limited or where the air might be poisoned is based on the fo

Bess [88]

Answer:

so I don't know how to answer that

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3 years ago

Least to greatest 2.62,2 2/5, 26.8%, 2.26%,271%

olga_2 [115]

2.26%, 26.8%, 2 2/5, 2.62, 271%

Hope this helps! :D

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3 years ago

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