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Pavlova-9 [17]
4 years ago
5

Which phrase is a result of a scientific law? Daryl is a scientist at a research institute. He reviews articles written by other

scientists. He conducts experiments after creating a hypothesis. Sometimes, he has to modify the hypothesis after conducting an experiment. Last week, he accidentally dropped his coffee mug, which then fell on the floor due to gravity.
Chemistry
1 answer:
AleksAgata [21]4 years ago
8 0

Answer: Last week, he accidentally dropped his coffee mug, which then fell on the floor due to gravity.

A scientific law can be defined as a law which followed universally. As a scientific law gives evidences and facts related to a natural phenomena. It is useful in scientific education and research.

Last week, he accidentally dropped his coffee mug, which then fell on the floor due to gravity is an example of law of gravity. The law of gravity states that objects are attracted to each other due to the magnitude of force acting between these objects. The earth exerts it's own gravitational force, to attract the objects towards itself.

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A gas at STP has a volume of 1.00 L. If the pressure is doubled and the temperature remains constant, what is the news of the ga
4vir4ik [10]

Answer: PV = nRT

A gas at STP... This means that the temperature is 0°C and pressure is 1 atm.

R is the gas constant which is 0.08206 L*atm/(K*mol)

Rearranging for volume

V = nRT/P

The temperature and number of moles are held constant. This means that this uses Boyle's Law. (The ideal gas law could be manipulated to give us this result when T and n are held constant.)

PV = k

where k is a constant.

This means that

P₁V₁ = k = P₂V₂

P₁V₁ = P₂V₂

(1 atm) * (1 L) = (2 atm) * V₂

V₂ = 0.5 L

The new volume of the gas is 0.5 L.

Explanation:

3 0
2 years ago
What are some positive applications for allelotoxin?
pogonyaev

Positive applications for allelotoxin is that it prevents plants from enduring any type of competition with other species.

<h3>What is Allelopathy?</h3>

This is the process in which a plant inhibits the growth of another through a secretion of a chemical which is referred to as allelotoxin.

This technique however reduces biodiversity which isn't ideal so as to prevent organisms from going extinct and also reduces adaptation or evolution due to the reduced or non growth of the plant species which are affected.

A common example is  the sorghum plant preventing of the growth of weeds thereby resulting in the most appropriate choices for the positive applications of allelotoxin.

Read more about Allelotoxin here brainly.com/question/13963687

#SPJ1

8 0
1 year ago
At 20 °C the vapor pressure of pure benzene (C6H6) is 75.0 torr, and that of toluene (C7H8) is 22.0 torr. Assume that benzene an
8090 [49]

Answer:

mole fraction benzene = 0.62

mole fraction toluene   = 0.38

Explanation:

Raoults law for ideal solutions tells us that the totoal vapor pressure of the solution will be given by adding the partial pressures of the components of  the solution and the partial pressures are simply given by the product of the component in solution times its pure vapor pressure at the temperature given:

<h2>p total = x₁  P⁰₁ + x₂  P⁰₂</h2>

where x1 and x2 for this solution denote the mole fractions of  benzene and toluene and p⁰ ₁, p⁰₂ the vapor pressures of benzene and toluene respectively.

Solving the algebraic equation:

75 x₁ + 22 x₂  = 55

75 x₁ + 22 ( 1- x₁) = 55   (since x₁ + x₂ = 1)

75 x₁ + 22 - 22 x₁ = 55

53 x₁  = 33

x₁ = 0.62  

x₂ = 1 - 0.62 = 0.38

6 0
3 years ago
The Sierra Nevada, a mountain range in California, is made
tensa zangetsu [6.8K]
Id say uplift but i’m not sure..
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4 years ago
In a longitudinal wave, particle displacement is
nordsb [41]

from google, so I think the answer to that question is the second one

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4 years ago
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