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likoan [24]
3 years ago
12

Which solution is the most concentrated?

Physics
1 answer:
tekilochka [14]3 years ago
8 0

Answer:

B, i think.

Explanation:

Calculate the number of moles of solute present.

Moles of Na0H =15.0g Na0H x 1 molNa0H over 40.00g Na0H= 0.375 mol Na0H.

Calculate the liters of solution present.

volume=225mL x iL over 1000mL = 0.225 L soln

Divide the number of moles of solute by the number of liters of solution.

Molarity= 0.375mol over 0.225L =1.67 mol/L

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If a 5000-kg is moving at a speed of 43 m/s, what is its momentum?
Eduardwww [97]

Answer:

215000kgm/s

Explanation:

Given parameters:

Mass of the moving body  = 5000kg

Velocity  = 43m/s

Unknown:

Momentum  = ?

Solution:

The momentum of a body is the amount of motion a body possess.

 It is mathematically expressed as:

  Momentum  = mass x velocity

 Now:

  Momentum  = 5000 x 43  = 215000kgm/s

4 0
3 years ago
A 4-kilogram ball moving at 8 m/sec to the right collides with a 1-kilogram ball at rest. After the collision,
elena-14-01-66 [18.8K]
Conservation of momentum: total momentum before = total momentum after

Momentum = mass x velocity

So before the collision:
4kg x 8m/s = 32
1kg x 0m/s = 0
32+0=32

Therefore after the collision
4kg x 4.8m/s = 19.2
1kg x βm/s = β
19.2 + β = 32

Therefore β = 12.8 m/s
4 0
3 years ago
Un libro del peso di 12 N è in equilibrio su un tavolo. Sapendo che il coefficiente di attrito statico vale 0,5, la forza di att
Tanzania [10]

Answer:

60

Explanation:

Translation -

A book weighing 12 N is balanced on a table. Knowing that the static friction coefficient is 0.5, how much is the friction force worth?

Friction force is

f = u * n

f = 0.5 * 12N

f = 60

4 0
3 years ago
If for every action force an equal and opposite reaction force exlsts, how can anything ever be accelerated?
klasskru [66]

Answer:

B

Explanation:

The net force is the force between action and reaction and when this forces are not the same an acceleration is spurred.

3 0
3 years ago
Newton's first law of motion is the law of inertia. What does it state?
vladimir2022 [97]

Answer:

b is the right answer

Explanation:

<h3>hope helps!!</h3>
5 0
3 years ago
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