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Elza [17]
3 years ago
9

Why is the iron block the hardest to lift?

Chemistry
1 answer:
vekshin13 years ago
6 0

Answer: The density, mass, and weight of the iron block make it difficult to lift than a cork block.

Explanation:

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Is it possible to get the elliptic discriminate of an elliptic curve with characteristic 2?
sesenic [268]
Yes, it <span>is possible to get the elliptic discriminate of an elliptic curve with characteristic 2</span>
6 0
3 years ago
20. What intermolecular forces would affect the interactions of water molecules? Explain why.
katovenus [111]

Answer:

Water has strong hydrogen bond dipole-dipole intermolecular forces that give water a high surface tension and a high heat of vaporization and that make it a strong solvent

3 0
3 years ago
The activation energy for the reaction NO2 (g )+ CO (g) ⟶ NO (g) + CO2 (g) is Ea = 218 kJ/mol and the change in enthalpy for the
madreJ [45]

Answer:

470\frac{KJ}{mol}

Explanation:

The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)

For any reaction, the change in enthalpy is related to the activation energy by the equation

\Delta H =E_{a\ direct}-E_{a\ reverse}

So, the activation energy for the reverse reaction is

E_{a\ reverse}=E_{a\ direct}-\Delta H =218 \frac{KJ}{mol} - (-252)\frac{KJ}{mol}=470\frac{KJ}{mol}

4 0
3 years ago
What type of bonding occurs in a sample of pure barium, Ba? In other words, how is one barium atom held to another barium atom?
Irina-Kira [14]

Answer:metallic bond

Explanation:

The metallic bond consists of a layer of valence electrons electrostatically attracted to positive metal ions. Hence in a metal such as barium, electrons bind the metal ions together in the metallic crystal lattice of the element.

6 0
3 years ago
Does the +2 and -1 make a difference when solving for the Hrxn? What difference does it make?
Kruka [31]

Answer:

It would be a square plus b square and i am writing just so i can get pionts

Explanation:

4 0
3 years ago
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