The standard enthalpy of reaction should be negative.
<h3>What is enthalpy?</h3>
A thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume.
Inside the heat pack are two chemicals that get mixed when you smush them together. As they mix, some weak bonds are broken, which takes a little bit of energy. But new, stronger bonds form which release energy. Releasing that energy causes the surroundings to heat up.
Hence, option B is correct.
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Answer:
1. Hyphothesis 2.Theory 3. law
Explanation:
not sure, but law is observation, theory is based on knowledge things before.
Answer:
No, The equation is not balanced
The correct ans is
2CO+O2=2CO2
Methane (CH4) and oxygen (O2) react to produce carbon dioxide (CO2) and water (H2O). CH4 and O2 are the reactants, while CO2 and H2O are the products.
Answer:
D
Explanation:
hotspot volcanoes form from these
