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Monica [59]
2 years ago
8

Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to compl

ete the statements.
In Part I of this experiment, the
was intentionally manipulated. This was the independent variable. The dependent variable measured was the
.

In Part II of this experiment, the
was intentionally manipulated. This was the independent variable. The dependent variable measured was the
.
Chemistry
2 answers:
yuradex [85]2 years ago
8 0

Answer:

what options are on the dropdowns

Explanation:

kozerog [31]2 years ago
5 0

Answer:

Bro bro bro I spent like forever looking for this answer and literally could not find it but I took an educated guess an here you go dude:)

Explanation:

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svlad2 [7]

it is a great change because the salt goes in and turn the water to salt water

7 0
3 years ago
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Changes in temperature, pressure, and volume affect the behavior of gases more than they affect solids and liquids. ____________
Marina CMI [18]
True. All of those things affect gases more.
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Minchanka [31]

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C. The third option

Explanation:

7 0
3 years ago
Comment Both propane and benzene are hydrocarbons. As a rule,
kozerog [31]

The enthalpy change : -196.2 kJ/mol

<h3>Further explanation  </h3>

The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation  

The enthalpy of formation measured in standard conditions (25 ° C, 1 atm) is called the standard enthalpy of formation (ΔHf °)  

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)  

The value of ° H ° can be calculated from the change in enthalpy of standard formation:  

∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)  

Reaction

2 H₂O₂(l)-→ 2 H₂O(l) + O₂(g)

∆H ° rxn = 2. ∆Hf ° H₂O - 2. ∆Hf °H₂O₂

\tt \Delta H_{rxn}=2.(-285.8)-2.(-187.8)\\\\\Delta H_{rxn}=-571.6+375.4=-196.2~kJ/mol\rightarrow \Delta Hf~O_2=0

5 0
3 years ago
For the reaction a2 + b2 → 2ab, ea(fwd) = 105 kj/mol and ea(rev) = 77 kj/mol. assuming the reaction occurs in one step, calculat
Lady bird [3.3K]
Answer is: 28 kJ.
Chemical reaction: A₂ + B₂ ⇄ 2AB.
Ea(forward) = 105 kJ/mol.
Ea(reverse) = 77 kJ/mol.
ΔH(reaction) = ?
<span>The enthalpy change of reaction is the change in the energy of the reactants to the products.
</span>ΔH(reaction) = Ea(forward) - Ea(reverse).
ΔH(reaction) = 105 kJ/mol - 77 kJ/mol.
ΔH(reaction) = 28 kJ/mol; this is endothermic reaction (ΔH <span>> 0).</span>

6 0
3 years ago
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