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Delicious77 [7]
3 years ago
7

WILL GIVE BRAINLIEST (major help!!! need now!!!) David observed properties of four different compounds, only one of which is an

ionic compound. His observations are shown in the chart.
A 2-column table with 4 rows. The first column labeled compound has entries W, X, Y, Z. The second column labeled observations has entries is a hard solid, melts at 44 degrees C, has a molecular structure; is a brittle solid, does not conduct electricity in water, has a crystal structure; is a hard solid, conducts electricity, has a molecular structure; is a brittle solid, melts at 801 degrees C, has a crystal structure.

Which is most likely the ionic compound?


W

X

Y

Z
Chemistry
2 answers:
ElenaW [278]3 years ago
8 0

Answer:I think it’s y sorry if I’m wrong

Explanation:

svet-max [94.6K]3 years ago
4 0

Answer:

i think it might be y

Explanation:

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Honestly dude it’s either j or h
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What are the products of cyclic electron flow during the light reactions of photosynthesis?
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Answer:

Cyclic electron flow uses just PS I and creates ATP.

Explanation:

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Cyclic electron flow has excited electrons from the photochemical reaction center (P700) in Photo-system I that is passed from Ferrodoxin to the cytochrome complex and back to the photochemical reaction center. Cyclic electron flow only uses PS I and produces ATP, not O2 or NADPH.

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4 years ago
Which scenario suggest that the results of an experiment are reliable
ale4655 [162]
What is a reliable scientific experiment?experiment, experimentation, experiments, reliable scientific experiment, science, scientific, scientific experiment, scientific experiments, scientific method

Now that the atheists have taken over science and have de-valued and discouraged experimentation I’ll try to re-value experimentation and encourage experimentation again like how it use to be prior to atheists taking over science in the late 1960s and early 1970s.

Why have atheists done this? It’s because experimentation gives us data that reflects reality, and often reality behaves very differently from how scientists want to think it does. Modern day atheist scientists want to find data that matches into their incredulity and mathematical models, not data that necessarily reflects how reality works.

Remember, experimental data is used to verify the accuracy of mathematical models, not the other way around like many modern day scientists think.

So I’ve come up with the basic properties of a highly reliable scientific experiment.

The Properties of a Reliable Scientific Experiment:

– Repeatability:  This means that the exact same results of the experiment are duplicated over and over again (when following the exact same set of systematic procedures). If the results of an experiment can be repeated over and over again yielding the exact same effect when following the exact same set of procedures, then the results of the experiment cannot be denied (although the results can possibly be interpreted differently). If your experiment only yields a certain result one time or a few times or in a non-repeatable condition then the experiment is not useful or scientific.

– Controls: Since correlation is not causation it’s important to have controls (if possible) to determine what’s causing certain results in an experiment. Having controls eliminates certain variables causing certain effects in the results of an experiment.

A simple example can be seen with determining which fertilizer is best for plant growth. In order to create a scientific experiment you would have to keep all the variables the same except for the fertlizer (these are the controls). Like the plant type, the amount of water each day, the time watered, the exposure to light, etc…

Without having control variables it would be unclear as to what’s causing the results in the experiment.

– <span>Not Relying on Subjective Users: </span> This ties into repeatability and means that the experiment doesn’t rely upon any subjective methodology, like only working if special users participate, a subjective bias or anything like that. Take for instance remote viewing experiments that only work if specially trained remote viewers participate. Since they would only work if special users participate it doesn’t give us any reliable repeatable data that’s useful in science.


So i hope this helps you and please makes this the brainly-est  answer...thanks 

4 0
3 years ago
Which is the reason that ionic compounds are brittle?
lisabon 2012 [21]
Ionic bonds are the weakest bonds. 
7 0
3 years ago
Read 2 more answers
Rank the following elements by increasing atomic radius: Carbon, aluminum, oxygen, potassium.
Aloiza [94]

Answer

The elements in increasing order of atomic radius: oxygen, carbon, aluminum, potassium

Explanation:

The distance from the center of the nucleus to the outermost shell of the electron is known as the atomic radius of an element. The atomic radius decreases rightward along each period (row) of the table due to the increase in effective nuclear charge (the charge of the nucleus equal to the number of protons). Across a period, electrons are added to the same energy level and the increasing number of protons causes the nucleus to exert more pull on these electrons, which makes the atomic radius smaller.  Atomic radius increases down each group (column) of the periodic table because of the addition of electrons to higher energy levels, which are further away from the nucleus and the pull of nucleus weakens. Another reason for the increase in atomic radius is the electron shielding effect, which is the reduction of the attractive force between a nucleus and its outer electrons due to the blocking effect of inner electrons

While moving from left to right in the second period, c arbon comes before  oxygen  and so oxygen will have a smaller atomic radius than  carbon. While moving down the periodic table, al uminum comes before  potassium even if they are not in the same period. So aluminum 's atomic radius will be smaller than that of  potassium  but bigger than that of  carbon  and  oxygen.

(hope that helps can i plz have brainlist it will make my day :D hehe)

8 0
3 years ago
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