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3 years ago

1 Point

Chemistry

1 answer:

Citrus2011 [14]3 years ago

6 0

D. The laws explain how objects move and are supported by experimental evidence.

Explanation:

The laws of motion are scientific laws because they explain how objects moves and are supported by experimental evidence.

The laws of motion were crafted by Sir Isaac Newton.

Like every other scientific laws, they are borne out of experimental evidence that explains mathematically how objects moves.

Newton proposed three of such law for motion:

First law: An object will remain in its state of rest or in continuous motion unless an external force acts on it.
Second law: The net force on a body is the product of its mass and acceleration
Third law: Action and reaction are equal and opposite in direction.

These laws model the perfect behavior of moving objects as concluded from experimental results which have been formulated through hypothesis.

learn more:

Newton's laws brainly.com/question/11411375

Experiments brainly.com/question/5096428

#learnwithBrainly

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3 years ago

Need Help ASAP

bagirrra123 [75]

a. pH=2.07

b. pH=3

c. pH=8

<h3>Further explanation</h3>

pH=-log [H⁺]

a) 0.1 M HF Ka = 7.2 x 10⁻⁴

HF= weak acid

$\tt [H^+]=\sqrt{Ka.M}\\\\(H^+]=\sqrt{7.2.10^{-4}\times 0.1}\\\\(H^+]=8.5\times 10^{-3}\\\\pH=3-log~8.5=2.07$

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Explanation:

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