H2O (s) ⇒ H2O What would be the best argument against writing this in the form of a chemical equation?

Chemistry

1 answer:

Goshia [24]3 years ago

5 0

Answer: Since this is merely a Physical Change, it is improper to write it as a chemical equation.

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On which energy level are the valence electrons for calcium (Ca) ?

zhannawk [14.2K]

The fourth (last) one in 2-8-8-2.

7 0

2 years ago

1. What amount of ammonia (in moles) is produced by the reaction of 4.00 mol H2 with 3.00 mol Nz?

ArbitrLikvidat [17]

<h2>Answer: 6 moles</h2>

<h3>Explanation:</h3>

3 H₂ + N₂ → 2 NH₃

↓ ↓

4 mol 3 mol

Since the moles of N₂ is the smaller of the two reactants, then N₂ is the limiting factor (the reactant that will decide how much ammonia is produced since it has the smaller amount of moles). ∴ we have to use it in calculating the number of moles of ammonia

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∴ the moles of NH₃ = moles of N₂ × 2

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2 years ago

When 0.250 moles of KCl are added to 200.0 g of water in a constant pressure calorimeter a temperature change is observed. Given

777dan777 [17]

Explanation:

Upon dissolution of KCl heat is generated and temperature of the solution raises.

Therefore, heat generated by dissolving 0.25 moles of KCl will be as follows.

$17.24 kJ/mol \times 0.25 mol$