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Sindrei [870]
3 years ago
8

The scale most widely used by scientist for measuring earth quakes is called what

Chemistry
2 answers:
DanielleElmas [232]3 years ago
8 0
A sesimograph or a sesimogram.
S_A_V [24]3 years ago
5 0
Its actually called a Richter scale.
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Consider this row in the periodic table of elements. As we move from left to right, across the row, the elements
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Complete the equation for the dissociation of Na2CO3(aq).Omit water from the equation because it is understood to be present.
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Explanation:

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When N2(g) reacts with H2(g) to form NH3(g), 92.2 kJ of energy are evolved for each mole of N2(g) that reacts. Write a balanced
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Answer:

N₂ + 3H₂ → 2NH₃   ΔH = - 92.2KJ

Explanation:

Let's write out the chemical equation between Nitrogen and Hydrogen to Form Ammonia.

Nitrogen + Hydrogen = Ammonia

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A Thermochemical Equation is a balanced stoichiometric chemical equation that includes the enthalpy change, ΔH.

The balanced stoichiometric chemical equation is given as;

N₂ + 3H₂ → 2NH₃

92.2 kJ of energy are evolved for each mole of N2(g) that reacts. And from the equation, 1 mole of N2 reacts.

The enthalpy change, ΔH = - 92.2KJ. The negative sign is because heat is being evolved.

The balanced thermochemical equation;

N₂ + 3H₂ → 2NH₃   ΔH = - 92.2KJ

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