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sattari [20]
3 years ago
9

Someone please help me I got a few minutes

Chemistry
2 answers:
HACTEHA [7]3 years ago
6 0

Answer:

30 feet /second

Explanation:

60 feet/ 2 sec = 30 feet/sec

valina [46]3 years ago
5 0

Answer:

30 feet/sec

Explanation:

Average speed = distance / time (distance divided by time)

Average speed = 60 feet / 2 seconds

Average speed = 30 feet/sec

So the anverage speed is 30 feet per second

HOPE IT HELPED

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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,

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                      X = 0.665 moles of CO₂

3 0
2 years ago
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