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Sloan [31]
3 years ago
13

Taylor mixed two liquids together in a beaker. The beaker quickly heated up. What does this indicate about the reaction that too

k place in the beaker?
A. that there was no energy transfer
B. that energy was created
C. that energy was transformed
D. that energy was destroyed
Chemistry
2 answers:
amm18123 years ago
6 0

Answer: c

Explanation:energy cannot be made or destroyEd according to a law of energy

Natasha2012 [34]3 years ago
4 0

Answer:

<em>The answer is C. that energy was transformed</em>

Explanation:

<em>Hope this helped!</em>

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Enthalpy of atomisation
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The enthalpy of atomization is the enthalpy change that accompanies the total separation of all atoms in a chemical substance. This is often represented by the symbol ΔₐₜH or ΔHₐₜ. All bonds in the compound are broken in atomization and none are formed, so enthalpies of atomization are always positive.

Explanation:

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Sodium metal and water react to create sodium hydrogen and hydrogen gas through the unbalanced equation.
Maurinko [17]

Answer:

Theoretical yield = 2.5 g

Explanation:

Given data:

Mass of sodium = 79.7 g

Mass of water = 45.3 g

Theoretical yield of hydrogen gas = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/ molar mass

Number of moles = 79.7 g / 23 g/mol

Number of moles = 3.5 mol

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 45.3 g / 18g/mol

Number of moles = 2.5 mol

Now we will compare the moles of hydrogen gas with water and sodium.

                        H₂O           :             H₂

                           2             :              1

                          2.5           :            1/2×2.5 =1.25 mol

                     

                           Na           :              H₂

                             2            :               1

                           3.5           :             1/2×3.5 =1.75 mol

water will be limiting reactant.

Theoretical yield:

Mass = number of moles × molar mass

Mass =  1.25 mol  × 2 g/mol

Mass = 2.5 g

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3 years ago
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