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Svetach [21]
3 years ago
5

Calculate the enthalpy change for the melting of a 25.0g ice cube

Chemistry
1 answer:
joja [24]3 years ago
7 0
Enthalpy change = mass * specific heat capacity * temperature change

Mass is 25.0 (given)
Specific heat capacity is 2.108 (checked online)
Temperature change : none
So input these into the equation :

25.0 * 2.108 = 52.7
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Heat energy is _____ when it moves from one room to another.
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Hello,

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6 0
3 years ago
How many moles of carbon dioxide gas should be produced when 10.0 g of C2H6 are combusted at STP?
Finger [1]

Answer:

                    0.665 moles of CO₂

Explanation:

                     The balance chemical equation for the combustion of Ethane is as follow:

                            2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Step 1: <u>Calculate moles of C₂H₆ as;</u>

                              Moles  =  Mass  /  M.Mass

Putting values,

                              Moles  =  10.0 g / 30.07 g/mol

                              Moles  =  0.3325 moles

Step 2: <u>Calculate Moles of CO₂ as;</u>

According to balance chemical equation,

                    2 moles of C₂H₆ produced  =  4 moles of CO₂

So,

             0.3325 moles of C₂H₆ will produce  =  X moles of CO₂

Solving for X,

                      X  =  0.3325 mol × 4 mol ÷ 2 mol

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3 0
3 years ago
The Connecticut Bueller theory assumes that particles of an ideal gas are
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<span>are in random, constant, straight-line motion</span>

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Answer:

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3 0
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The amount of energy released when 50.0 kg is converted into energy is x 10A. A:
astra-53 [7]

Answer:

The amount of energy released when 50.0 kg is converted into energy is

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A: 18

8 0
3 years ago
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