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Aleks [24]
11 months ago
5

A geologist fills three identical funnels with three different sizes of sandstone. Then, the geologist pours 500 mL of water int

o each funnel and measures how long it takes for the water to stop draining out of the bottom of the funnels.
A biologist cuts an African violet leaf into six equal-sized pieces. Then, the biologist carefully places the cuttings on six different petri plates, each filled with a different substance, and monitors the growth of the cuttings over the next several weeks.

A physicist places three identical glass rods in different beakers, each filled with a different liquid. Then, the physicist measures the angle of refraction in each scenario.

Which of the following statements is true based on the above information?
A.
Geologists, biologists, and physicists are only able to gather data through laboratory experiments.
B.
Variables and conditions cannot be controlled during a laboratory experiment.
C.
Laboratory experiments are a useful form of scientific investigation in many different fields of science.
D.
Physicists do not perform laboratory experiments as often as biologists and geologists.
Chemistry
1 answer:
pav-90 [236]11 months ago
5 0

The statements that are true from the information contained in the question is;

Geologists, biologists, and physicists are only able to gather data through laboratory experiments.

Laboratory experiments are a useful form of scientific investigation in many different fields of science.

<h3>What is an experiment?</h3>

The term experiment refers to the manner in which information could be obtained. We know that we are able to arrive at new knowledge in science by conducting carefully controlled experiments. In this experiment, there must be a dependent variable as well as an independent variable.

The independent variable is the variable that we are able to manipulate in the course of the experiment while the results that we obtain when we manipulate the independent variable affects the values of the dependent variable.

Hence, the statements that are true from the information contained in the question is;

Geologists, biologists, and physicists are only able to gather data through laboratory experiments.

Laboratory experiments are a useful form of scientific investigation in many different fields of science.

Learn kore about experiments:brainly.com/question/11256472

#SPJ1

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The correct option is C.

An atom can be either in the ground state or in an excited state. An atom is said to be in the ground state, if the total energy of its electron can not be lowered by moving one or more electrons into different orbitals. At the ground state, the electrons in the atom have the lowest energy possible and they are stable. On the other hand, an atom is said to be in an excited state, if the energy of its electrons can be lowered by transferring one or more electrons into different orbitals. An atom in an excited state has more energy and is less stable.

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A, option is the correct answer of this question

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How many moles of oxygen are necessary to generate 28 moles of water, according to the following equation: 2H2+O2→2H2O
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The number of moles of oxygen required to generate 28 moles of water from the reaction is 14 moles

<h3>Balanced equation </h3>

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From the balanced equation above,

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<h3>How to determine the mole of oxygen needed </h3>

From the balanced equation above,

2 moles of water were obtained from 1 mole of oxygen

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28 moles of water will be obtained from = 28 / 2 = 14 moles of oxygen

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The average human lives 74 years. how many seconds is this? write your answer in scientific notation
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Number of second in human lives in scientific notation is 3.9 × 10⁷ second

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Number of second in human lives in scientific notation

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