What is wrong with this model of the atom.

Answer:

Chemistry is sometimes called “the central science,” because it bridges physics with other natural sciences, such as geology and biology. Chemistry is the study of matter and its properties.

Explanation:

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Answer:

A

Explanation:

Answer:

Option C )The number of atoms of each element is the same on each side of the equation.

Answer:

Option D

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Answer:

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Explanation:

Explanation:

option B is the correct answer, 1.67g/mL.

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Answer

The most abundant carbon isotope is carbon-12

Explanation:

The relative atomic mass of carbon is 12.011, which is extremely close to 12.0. This means that the masses C-13, and C-14 are practically negligible when contributing to the relative atomic mass of carbon.

In fact, the C-12 isotope makes up 98.9% of carbon atoms, C-13 makes up 1.1% of carbon atoms, and C-14 makes up just a trace of carbon atoms as they are found in nature.

Answer:

pour the rock salt mixture throught a filter made from paper and allow the liquid to filtrate .

Explanation:

Separating Sand and Salt

Probably the easiest method to separate the two substances is to dissolve salt in water, pour the liquid away from the sand, and then evaporate the water to recover the salt.

Pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.

Filtration is defined as the technique of removing solid particles from a liquid or gaseous fluid by passing the fluid through a filter media while keeping the solid particles behind.

It can also be defined as a physical method that uses a filter media with a complicated structure that only allows fluid to pass through to separate solid matter and liquid from a combination.

There are six types of filtration.

Mixture is defined as a substance that is composed of two more chemical compounds or substances that do not chemically mix.

There are two types of mixture.

Thus, pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.

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The characteristic of reactions that depends on valence electrons is the bond type.

In chemistry, a chemical bond could be;

The type of bond formed depends on the number of valence electrons present. When there are few valence electrons on an atom, it mostly forms ionic bonds.

When there are more electrons on an atoms, it mostly forms covalent bonds and the electrons between the atoms are shared.

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Answer:

D: bond number

Answer:

Explanation:

First, calculate the molar mass of Aluminum Oxide (Al2O3), by multiplying the number of the constituent atoms, by their relative atomic abundances . Inserting the atomic masses into the equation gives you  . Then find the percent of Aluminum by mass, in Aluminum Oxide.  Finally, set up an equality, where 53.02% of the mass of Aluminum Oxide, is 999 grams of Aluminum

The mass percent of Green Dye X in the drink powder if the molecular weight is 418.4 g/mol is 0.355%

Beer's law explains the relation between the concentration of a solution to its absorbance (A) by using the equation.

here:

Now from the calibration curve in the question, the plot between the absorbance and the concentration gives a straight line of y = mx.

Here

The equation of the calibration curve is given as:

i.e.

If the sports drink was 10 times diluted while taking the absorption measurement. Then, the actual concentration of green dye in the sports drink is:

= 0.017 mM × 10

= 0.17 mM

The number of moles of green dye in 250 mL (i.e. 0.25 L) sports drink is estimated as:

= 0.17 mmol/L × 0.25 L

= 0.0425 mmol

However, the mass of the green dye present in the sports drink is

= 0.0425 mmol ×418.4 g/mol

= 17.782 mg

Finally, the mass percent of green dye in the drink powder is:

[tex]\mathbf{ = \dfrac{mass (dye)}{mass (powder)} \times 100\%}[/tex]

[tex]\mathbf{ = \dfrac{17.782 \ mg }{5.0 \ g} \times 100\%}[/tex]

[tex]\mathbf{ = \dfrac{17.782 \ mg }{5000 \ mg} \times 100\%}[/tex]

= 0.355 %

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Answer:

CO2

Explanation:

Non polar molecules are insoluble in water .

Option A

[tex]\sf \longmapsto co_{2}[/tex]

[tex]\sf \longmapsto\sf Co_{2}[/tex]

Lewis Structure =

[tex]\sf \longmapsto\sf \: o \: = c = o[/tex]

[tex]\sf \longmapsto4 + 6(2)[/tex]

[tex]\sf \longmapsto16[/tex]

Answer:

positive reaction for Molisch's test is given by almost all carbohydrates (exceptions include tetroses & trioses). It can be noted that even some glycoproteins and nucleic acids give positive results for this test (since they tend to undergo hydrolysis when exposed to strong mineral acids and form monosaccharides).

Answer:

glycoproteins

Explanation:

A positive reaction for Molisch's test is given by almost all carbohydrates (exceptions include tetroses & trioses). It can be noted that even some glycoproteins and nucleic acids give positive results for this test (since they tend to undergo hydrolysis when exposed to strong mineral acids and form monosaccharides).

Answer:

Yes, Because the dishes that are unwashed have the most bacteria while the soap & water dish has the least bacteria.

Explanation:

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Explanation:

Ionization is the process by which ions are formed by gain or loss of an electron from an atom or molecule. If an atom or molecule gains an electron, it becomes negatively charged (an anion), and if it loses an electron, it becomes positively charged (a cation). Energy may be lost or gained in the formation of an ion.

Aria speed during scuba diving was 0.15 m/s.

Speed is the ratio of the distance travelled to the time taken. Speed is given by:

Speed = distance / time

Given that the distance travelled was 36 meters and the time was 4 minutes, hence:

Time = 4 minutes × 60 seconds per minute = 240 seconds

Speed = 36 m / 240 s

Speed = 0.15 m/s

Therefore Aria speed during scuba diving was 0.15 m/s.

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Answer:

Salt

Explanation:

The mineral form halite , or rock salt is sometimes called common salt

Answer:

The controlled variable of an experiment is the one thing that stays the same in an experiment.

Explanation:

An example would be : if I have two pennies, both dunked in water, but than I change one to be dunked in vinegar, the one dunked in water still is the constant or the controlled variable.

Answer:

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Answer:

What is surface tension?

Explanation:

Surface tension and droplets: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer.

Surface tension forces between mucosal surfaces play an important role in the pathogenesis of the disease. The obstruction of upper airway elicit the activation of autonomic nervous system, hypoxemia, and arousal from sleep.

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Answer:

here is your answer

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Answer:

They all have the same number of atoms

Explanation:

Which of the following has more atoms?

One mole of zinc

One mole of gold

One mole of silver

One mole of magnesium contians  

O They all have the same number of atomst

a mole of anything contains Avogadros number of 6.022X10^23  things

which has the greatest number of thing? a dozen eggs, a dozen cookies, a dozen pizzas?

a dozen is a number means 12

a mole is a number that that means 6.022 X 10^23 you calculate the molar mass from the chemical formula, but every j mole contains 6.022X10^23

particles.

just like every dozen contains 12

so

They all have the same number of atoms

Answer:400

Explanation:

20x20

P(momentum)= mxv

Mass times velocity = momentum

Answer:

Researching maybe? That's a scientific method lol

Fat is a energy giving , protective food

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I give my best answer almost

Answer:

evaporation

Explanation:

An example of this is when puddles evaporate into the air after it has rained. Condensation is the opposite: gas → liquid

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The Elephant Maximus is the species that was introduced and later became extinct on Maguindanao.

Extinction occurs as all members of a species die, and therefore the species disappears. This includes complete extinction or extinction of the species in a specific zone.

In the case of the Elephant Maximus, which is known as the Asian Elephant, this species became extinct in a region known as Maguindanao in the Philippines.

This partial extinction occurred as the elephants from this zone were taken to Sabah in Malaysia from the 13th century to the 16th century. This occurred because the Sultans of this region considered this elephant to be a valuable and even sacred animal.

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