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Black_prince [1.1K]
2 years ago
7

Help please!!!! What is the best description of the side of the moon that faces Earth?

Chemistry
2 answers:
LenKa [72]2 years ago
3 0
The correct answer would be : C the earth cycle faces a divded way.
rusak2 [61]2 years ago
3 0

Answer:

The answer is C. Changes

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14. What are the different types of river in Nepal ?explain them briefly ​
Stella [2.4K]

Answer:

21

Explanation:

8 0
2 years ago
A bottle of wine contains 9.81 grams of C2H5OH, dissolved in 87.5 grams of water. The final volume of the solution is 100.0 mL.
dimulka [17.4K]

Answer:

[EtOH] = 2.2M and Wt% EtOH = 10.1% (w/w)

Explanation:

1. Molarity = moles solute / Volume solution in Liters

=> moles solute = mass solute / formula weight of solute = 9.8g/46g·mol⁻¹ = 0.213mol EtOH

=> volume of solution (assuming density of final solution is 1.0g/ml) ...

volume solution =  9.81gEtOH + 87.5gH₂O = 97.31g solution x 1g/ml = 97.31ml = 0.09731 Liter solution

Concentration (Molarity) = moles/Liters = 0.213mol/0.09731L = 2.2M in EtOH

2. Weight Percent EtOH in solution (assuming density of final solution is 1.0g/ml)

From part 1 => [EtOH] = 2.2M in EtOH = 2.2moles EtOH/1.0L soln

= {(2.2mol)(46g/mol)]/1000g soln] x 100% = 10.1% (w/w) in EtOH.

3 0
3 years ago
If an atom has 34 protons and 40 neutrons, what is its mass number? 40 6 74 34
Darya [45]
Protons+Neutrons
34+40= 74
7 0
3 years ago
Read 2 more answers
Which force is most responsible for binding together an atom’s protons and neutrons?
vampirchik [111]

Answer:

Hello There!!

Explanation:

I believe the answer is nuclear.

hope this helps,have a great day!!

~Pinky~

3 0
2 years ago
Read 2 more answers
HELP PLEASE WITH 1 QUESTION.
Nata [24]
The activity series goes top to bottom, most active to least active elements, going: Li, K, Ba, Sr, Ca, Na, Mg, Mn, Zn, Fe, Cd, Co, Ni, Sn, Pb, H, Cu, Ag, Hg, Au. 

Thus, your list of metals would go from most reactive to least reactive: Li, K, Mg, Zn, Fe, Cu, Au
8 0
3 years ago
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