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arsen [322]
2 years ago
8

When you rub two sticks together, they get hot.

Chemistry
1 answer:
worty [1.4K]2 years ago
6 0
You convert kinetic energy into thermal energy when you rub two sticks together.
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4. How many moles of oxygen gas are needed to react completely with<br> 3.0 moles of C2,H6.?
Brilliant_brown [7]

Hey there!:

Mole ratio :

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

2 moles C₂H₆ -------------------- 7 moles O₂

3.0 moles C₂H₆ ------------------ moles O₂ ??

moles O₂ = 3.0 x 7 / 2

moles O₂ =  21 / 2

moles O₂ = 10.5 moles of O₂

Hope this helps!

5 0
3 years ago
The calcium ions released into the cytosol during excitation of skeletal muscle bind to
emmainna [20.7K]

Answer:

Bind to the protein complex troponin.

Explanation:

Excitation of skeletal muscle caused by the calcium ions. During excitation of skeletal muscle, after calcium ions released into the cytosol, they bind to the protein complex known as troponin and causing substitutions in the protein complex.

These alterations permit protein to push out from the myosin-binding sites on the actin filament.

8 0
3 years ago
Which symbolizes a molecule of a compound?
Phantasy [73]

The answer is A.H202



R u sure

Yerp

Positive?

"          ??     Yerp!

_    

5 0
3 years ago
Read 2 more answers
Which of the following is not a group found in a protein?
Margaret [11]
The answer is C: L Group.
7 0
2 years ago
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What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the
sertanlavr [38]

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When the Zebra arrived they ate all the food so the Unionid mussels declined as they died from the lack of food. Causing the Zebra Zebra numbers to increase and Unionid numbers to decline.

6 0
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