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3 years ago

Which term refers to a universal fact sometimes based on mathematical equations?

Chemistry

1 answer:

torisob [31]3 years ago

3 0

Answer:

The correct answer is a scientific law.

Explanation:

The laws of science or scientific laws refer to the statements, which predict or illustrate an array of natural processes. It is a statement based on observations or spontaneous experiments, which illustrate some characteristics of the natural world.

The term law exhibits different uses in various circumstances, that is, across all the branches of natural science. The laws are formulated through data and can be further created via mathematics, in all the conditions, they are indirectly or directly based on empirical evidence. The scientific laws recapitulate the outcomes of observations or experiments, generally within some point of application.

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Answer:

The answer is B.

Explanation:

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3 years ago

help asap show work | a gas with a volume of 13L at a pressure of 197 kPA is allowed to expand to a volume of 23L. what is the p

Lera25 [3.4K]

Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

where

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Since we're finding the new pressure

$P_2 = \frac{P_1V_1}{V_2} \\$

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3 years ago

A solution has a pOH of 12. Which best describes the solution?

Ray Of Light [21]

Answer:

The solution is acidic.

Explanation:

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3 years ago

Uranium (VIII) Sulfide formula

tresset_1 [31]

Answer:

US₂

Explanation:

Uranium sulfide (US₂)

Uranium atomic symbol = U

Sulfur atomic symbol = S

Uranium valency = +4

Sulfur valency = -2

So;

Uranium sulfide (US₂)

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3 years ago

A 500 mL sample of 0.5 M NaOH at 20 C is mixed with an equal volume of 0.5 M HCl at the same temperature in a calorimeter. The t

Pepsi [2]

Answer: Heat of reaction ∆H = -13.43kJ

Explanation:

The number of moles of NaOH = the number of moles of HCL = N

N = concentration × volume= CV = 0.5M × 500mL/1000ml/L

N= 0.5 × 0.5= 0.25mol

Since the Molar enthalpy is given by Hm = -53.72kJ/mol

Heat of reaction ∆H = N×Hm

∆H= 0.25mol × -53.72kJ/mol = -13.43kJ

Heat of reaction ∆H = -13.43kJ

5 0

3 years ago