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earnstyle [38]
3 years ago
15

Hurry please quick summary

Chemistry
1 answer:
Nadya [2.5K]3 years ago
3 0
I think that work is being done on the books because they are being moved to their proper location and they will be sorted properly rather than lying on a table. Without lifting or carrying, you could sort the books by their genre or title name on the bookshelf so it will be sorted much more efficiently.

I’m not sure if this is the answer you are looking for but I hope it helps :)
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For each pair, which has higher potential energy?
Allushta [10]

Answer:

Maybe A)

Explanation:

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7 0
3 years ago
A mountain climber at the peak of a mountain has _____<br> energy.
hodyreva [135]

Answer:

Potential energy

Explanation:

A mountain climber at the peak of a mountain has potential energy.

The potential energy of a body is stored energy in a body. It is function of mass and position of the body.

 Mathematically;

       P.E  = mgh

m is the mass

g is the acceleration due to gravity

h is the height

7 0
3 years ago
Which statement is true about molecules and compounds?
OleMash [197]
I believe B is your answer.

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5 0
3 years ago
Read 2 more answers
If 50.0 g of formic acid (hcho2, ka = 1.8 x 10^-4) and 30.0 g of sodium formate (NaCHO2) are dissolved to make 500 ml. of soluti
gizmo_the_mogwai [7]

If 50.0 g of formic acid (HCHO2, ka = 1.8 x 10^-4) and 30.0 g of sodium formate (NaCHO2) are dissolved to make 500 ml. of solution, the ph of this solution is 3.35.

Therefore, option C is the correct option.

Given,

Given mass of sodium formate = 30 g

Given mass of formic acid = 50 g

Volume of sodium formate = 500 ml

Volume of formic acid = 500ml

Molar mass of sodium formate = 68 g

Molar mass of formic acid = 46 g

<h3>To calculate concentration of sodium formate and formic acid</h3>

The ratio of number of moles and the volume of solution is Molar concentration of substance.

Concentration of sodium formate

Cb = 30/(68×500)

= 0.00088m

Concentration of formic acid

Ca = 50/(46×500)

= 0.00217m

Now,

by using Henderson hesselbalch equation,

pH = pKa + log(Cb/Ca)

pKa = -log(1.8 × 10^(-4))

= 3.75

pH = 3.75 + log(0.00088/0.00217)

pH = 3.75 - 0.392

pH = 3.35

Thus, we calculated that the value of pH of solution of formic acid and sodium formate is 3.35.

learn more about pH:

brainly.com/question/13423434

#SPJ4

3 0
2 years ago
Click the "draw structure" button to launch the drawing utility. Draw the structure of the major organic product isolated from t
Anika [276]

Answer:

cis-hex-2-ene as produced as major product.

Explanation:

  • In presence of Pd/BaSO_{4} (Lindlar catalyst) and H_{2}, alkynes are reduced to alkene.
  • H_{2} molecules first adsorbed onto metal surface through chemisorption.
  • When alkyne molecule comes in close proximity to the metal surface, H atoms add onto triple bond to reduce it to alkene.
  • Two H atoms add onto alkyne from same face of metal. So, (Z) or cis-isomer of alkene is produced as a major product.
  • Reaction mechanism has been shown below.

4 0
3 years ago
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