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babunello [35]
2 years ago
9

Question 15 Measurements show that the energy of a mixture of gaseous reactants decreases by during a certain chemical reaction,

which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. Is the reaction exothermic or endothermic
Chemistry
1 answer:
Tresset [83]2 years ago
3 0

Answer:

20+56+760383848483838393949494994

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Answer:

Date Significance Soviet Union Mission

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October 4, 1957 First artificial satellite First signals from space Sputnik 1

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January 31, 1958 First US satellite, detection of Van Allen radiation belts

Explanation:

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Which of the following is the correct wedge and dash conformation for the following Newman projection?
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We have that  the correct wedge and dash conformation for the following Newman projection is

IV

From the Diagrams above

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8 0
3 years ago
If the concentration of Mg2+ in the solution were 0.039 M, what minimum [OH−] triggers precipitation of the Mg2+ ion? (Ksp=2.06×
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Answer:

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Explanation:

Step 1: Given data

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Solubility product constant of Mg(OH)₂ (Ksp): 2.06 × 10⁻¹³

Step 2: Write the reaction for the solution of Mg(OH)₂

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We will use the following expression.

Ksp = 2.06 × 10⁻¹³ = [Mg²⁺] × [OH⁻]²

[OH⁻] = 2.30 × 10⁻⁶ M

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