(01.03 MC)

Chemistry

1 answer:

vlada-n [284]2 years ago

5 0

Answer:

Explanation:

What you know is that the electrical energy comes from the wind turbine. Therefore the x must identify the type of energy that the wind turbine represents.

It must represent mechanical energy because blades of the wind turbine turns to produce electrical energy.

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In a hot shower or steam room, you look up at the ceiling. What do you observe on the ceiling and why?

Evgen [1.6K]

Steam rises to the top and stays there

3 0

3 years ago

Element Name: Oxygen,

White raven [17]

Answer:

Element Name: Oxygen

Symbol: O

What is the Mass: 15.999 u

Protons: 8

Neutrons:10

Electrons: 8

Ion or Isotope: Oxide

8 0

3 years ago

If 15 g of C₂H₆ reacts with 60.0 g of O₂, how many moles of water (H₂O) will be produced?

IceJOKER [234]

Answer:

$n_{H_2O}=1.5molH_2O$

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

$2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O$

Next, we identify the limiting reactant by computing the available moles of ethane and the moles of ethane consumed by 60.0 grams of oxygen:

$n_{C_2H_6}^{available}=15g*\frac{1mol}{30g} =0.50molC_2H_6\\n_{C_2H_6}^{reacted}=60.0gO_2*\frac{1molO_2}{32gO_2}*\frac{2molC_2H_6}{7molO_2} =0.536molC_2H_6$

Thus, we notice there are less available moles, for that reason, the ethane is the limiting reactant. Finally, we can compute the produced moles of water by:

$n_{H_2O}=0.50molC_2H_6*\frac{6molH_2O}{2molC_2H_6}\\\\n_{H_2O}=1.5molH_2O$