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Nina [5.8K]
3 years ago
12

Determine the pH of a 0.0500 M solution of potassium hydroxide (KOH).

Chemistry
2 answers:
olasank [31]3 years ago
5 0
The pOH is -log (,05) so 1.30.  14-1.30 = 12.7 is the pH
ElenaW [278]3 years ago
5 0
The formula for pOH is -log(M), so we can plug in -log(0.0500), which gives us 1.3. However, KOH is a BASE, so we just solved for the pOH.

The formula for pH and pOH is ph + pOH = 14, so we need to subtract the 1.3 from 14 since we want the pH, not the pOH. 

So, with that said, our final answer and pH is 12.7 :)
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The electrons formed from the aerobic oxidation of glucose are
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i and ii

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How does the geosphere and biosphere interact
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The geosphere, in turn, reflects the sun's energy back into the atmosphere. The biosphere receives gases, heat, and sunlight (energy) from the atmosphere.

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3 years ago
Pulses A, B, C, and D all travel at 10 m/s on the same string but in opposite directions. The string is depicted at time t=0 in
Anit [1.1K]

(a) The displacement of point P at time t=0.10s is determined as +2cm.

(b) The displacement of point P at time t=0.20s is determined as -2cm.

<h3>What is displacement?</h3>

Displacement is the change in position of an object. It is obtained from the product of velocity and time of motion.

x = vt

<h3>Displacement of the waves after 0.1 s</h3>

x = 10 m/s x 0.1 s = 1 m

Each wave will travel 1 m to the right or to the left, depending on the initial direction.

  • wave B from left will stop at point 0 m
  • wave A from left will stop at point -1 m
  • wave C from right will stop at point 0 m
  • wave D from right will stop at point + 1 m

wave B and C superimposed and the displacement will be between A and D.

Amplitude of A = - 2cm

Amplitude of D = + 4cm

Displacement of point P = 4 cm - 2 cm =  2cm

<h3>Displacement of the waves after 0.2 s</h3>

x = 10 m/s x 0.1 s = 2 m

Each wave will travel 2 m to the right or to the left, depending on the initial direction.

  • wave B from left will stop at point 1 m
  • wave A from left will stop at point 0 m
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  • wave D from right will stop at point 0 m

Displacement of point P = (amplitude B + amplitude C) + (amplitude A + amplitude D)

Displacement of point P= (2cm - 2cm) + (2 cm - 4cm)= -2cm

Learn more about displacement here: brainly.com/question/2109763

#SPJ1

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2 years ago
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