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STatiana [176]
3 years ago
13

Which of the following is NOT a testable hypothesis?

Chemistry
2 answers:
Leto [7]3 years ago
6 0
Gravity is caused by a magical force
sertanlavr [38]3 years ago
6 0

Answer:

The correct option is Gravity is caused by a magical force

Explanation:

Scientific hypothesis is a logical and realistic explanation to a particular concept or observation which can be experimented upon. Magic is a form of illusion created either as a trick or via some supernatural powers to achieve some aims.

Gravity is an established force is science that CANNOT be attributed to magic since science does not seek to prove illusions especially via trick or supernatural powers.

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At a pressure of 650 kpa 2.2L of hydrogen is used to fill a balloon to a final pressure of 115 kpa. What's the balloons volume?
Alborosie

Answer:

V₂ = 12.43 L

Explanation:

Given data:

Initial pressure = 650 KPa

Initial volume = 2.2 L

Final pressure = 115 KPa

Final volume = ?

Solution:

The given problem will be solved through the Boyles law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

650 KPa ×2.2 L = 115 KPa × V₂

V₂ = 1430 KPa. L/ 115 KPa

V₂ = 12.43 L

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