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omeli [17]
3 years ago
10

There are three different digits that make up the melting point of a compound. Describe these and detail what the sample looks l

ike at each point?
Chemistry
1 answer:
Setler [38]3 years ago
4 0

Answer:<em>The three states of matter are the three distinct physical forms that matter can take in most environments: solid, liquid, and gas. In extreme environments, other states may be present, such as plasma, Bose-Einstein condensates, and neutron stars.</em>

<em />

Explanation:

I'm pretty positive that's the right answer.........

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Do the molecules in a desk have energy?
Harrizon [31]
Everything requires energy to move. If the desk is moving, then it has energy. 
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3 years ago
Calculate the ΔH o for the reaction: Fe3+(aq) + 3OH−(aq) → Fe(OH)3(s) ΔH o = kJ/mol Substance ΔH o f (kJ/mol) ΔG o f (kJ/mol) S
timofeeve [1]

Answer:

ΔHr = -86.73 kJ/mol

Explanation:

Using Hess's law, you can calculate ΔH of any reaction using ΔH°f of products and reactants involed in the reaction.

<em>Hess law: ∑nΔH°f products - ∑nΔH°f reactants = ΔHr</em>

<em>-Where n are moles of reaction-</em>

For the reaction:

Fe³⁺(aq) + 3 OH⁻(aq) → Fe(OH)₃(s)

Hess law is:

ΔHr = ΔH°f Fe(OH)₃ - ΔH°f Fe³⁺ - 3×ΔH°f OH⁻

Where:

ΔH°f Fe(OH)₃: −824.25 kJ/mol

ΔH°f Fe³⁺: −47.7 kJ/mol

ΔH°f OH⁻: −229.94 kJ/mol

Replacing:

ΔHr = −824.25 kJ/mol - (−47.7 kJ/mol) - (3×-229.94 kJ/mol)

<em>ΔHr = -86.73 kJ/mol</em>

8 0
3 years ago
Help quick............
mariarad [96]

Answer:

Do you want an explaniton to? btw the answer is

1 in the 13

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3 in the 42

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3 0
3 years ago
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Convert 100 °C into Kelvin
Mice21 [21]

Hey there mate ;)!,

Given : 100°C

To convert to Kelvin scale unit,

Add the Celsius unit with 273.

→ (100+273) K

→<em><u> </u></em><em><u>373 </u></em><em><u>K</u></em>

<em>Therefore</em><em> </em><em>the </em><em>answer</em><em> is</em><em> </em><u>373 Kelvin</u><em> </em><em>or </em><u>373 </u><u>K.</u>

<em>By </em><em>Benjemin</em> ☺️

6 0
3 years ago
Which of the following is the best definition of baryonic material?
Lemur [1.5K]
<span>B. type of matter that we cannot see but that we believe makes up more than 20% of the universe C. matter made of ordinary atoms, such as hydrogen or helium atoms </span>
8 0
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