A metal has a density of 11.3 g/cm^3..

A mixture can be separated by looking at the physical properties of the components of the mixture.

Since salt is soluble in water, water can be added to the mixture to dissolve the salt.

The bar magnet is now introduced in order to remove the iron filings since they are attracted by a magnet.

The solution is filtered to separate the sand from the salt solution.

Lastly, the salt solution is heated to dryness to drive away the water and obtain the solid salt.

Hence the mixture has been separated into its components using their individual physical properties. Option A is the correct answer.

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Answer:

is it a b c or d

Explanation:

hi <3

compound are 2(or more) elements combined together

thus your answer will be picture I

hope this helps <3

Molar mass of NH_3

[tex]\\ \sf\longmapsto 14u+3(1u)[/tex]

[tex]\\ \sf\longmapsto 14u+3u[/tex]

[tex]\\ \sf\longmapsto 17g/mol[/tex]

We know.

No of moles=Given mass/Molar mass

[tex]\\ \sf\longmapsto Given\;Mass=17(5)[/tex]

[tex]\\ \sf\longmapsto Given \:Mass\:of\:NH_3=85g[/tex]

Now

Lets write the balanced equation

[tex]\\ \sf\longmapsto N_2+3H_2=2NH_3[/tex]

Now

[tex]\boxed{\sf No\:of\:Molecules =No\:of\;moles\times Avagadro\:no}[/tex]

For Hydrogen

[tex]\\ \sf\longmapsto 3\times 6.023\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 18.069\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 1.8\times 10^{22}molecules[/tex]

For Ammonia

[tex]\\ \sf\longmapsto 2\times 6.023\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 12.046\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 1.2\times 10^{22}molecules[/tex]

For Nitrogen

[tex]\\ \sf\longmapsto 1\times 6.023\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 6.023\times 10^{23}molecules[/tex]

Complete Question

A pycnometer is a glass apparatus used for accurately determining the density of a liquid. When dry and empty, a certain pycnometer had a mass of 27.056 g. When filled with distilled water at 25.0°C, it weighed 36.773 g. When filled with chloroform (a liquid once used as an anesthetic before its toxic properties were known), the apparatus weighed 41.451 g. At 25.0°C, the density of water is 0.99704 g/mL

-What is the volume of the pycnometer (mL)

We have that the volume of the pycnometer in mL is

[tex]V=9.111mL[/tex]

From the Question we are told that

Pycnometer mass of [tex]m_p=27.056 g.[/tex]

Temperature [tex]T=25 \textdegree[/tex]

Pycnometer filled with distilled water [tex]m_{pf}= 36.773 g[/tex]

Apparatus weighed [tex]w=41.451 g[/tex]

Density of water [tex]\rho= 0.99704 g/mL[/tex]

Generally the equation for Density  is mathematically given as

[tex]\rho=\frac{mass}{Volume}[/tex]

Since pycnometer is filled with water its volume can be defined by the volume of water in it

Therefore

Mass of water Pycnometer filled with distilled water-Pycnometer mass

[tex]M_w=36.773 -27.056\\\\M_w=9.084g[/tex]

Hence

[tex]V=\frac{9.084g}{0.99704 }[/tex]

[tex]V=9.111mL[/tex]

in conclusion

The volume of the Pycnometer in mL is

[tex]V=9.111mL[/tex]

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Answer:

a liter is larger, hope that helps :)

Answer:  No blnks, but I'll do my best.

Proton and neutrons

unstable

nuclear

stable

Explanation:  Requires ISP to see the blanks

Planck's constant =

6.62607004 × 10-34 m2 kg / s

Explanation:

Step by Step explanation

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency. Wikipedia

Answer:

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency.

Plancks constant =

6.62607004 × 10-34 m2 kg / s

Answer:

number must be 0000.999

Answer:

a.same kind of atoms or molecules

Answer:

Hi, There! Your Answer is Below!

Coughing for three or more weeks.

Coughing up blood or mucus.

Chest pain, or pain with breathing or coughing.

Explanation:

Tuberculosis (TB) is a disease caused by germs that are spread from person to person through the air. TB usually affects the lungs, but it can also affect other parts of the body, such as the brain, the kidneys, or the spine. A person with TB can die if they do not get treatment.

Answer: 1.The water molecules in the liquid phase have more energy than the molecules in the solid phase. The reason that the ice melts is that some of the energy in the water is transferred to the ice – this provides the heat necessary for the transition from the solid to liquid phase

Answer:

stimulus response

Explanation:

its stimulus response

Answer:

Carbon has an ability of catenation which other group IV elements lack.

Explanation:

Catenation is the ability for an element to form multiple bonds with other elements leading rise to long chains of compounds.

An example is organic compounds.

[tex].[/tex]

Answer:

•1. Make an Observation

•2. Ask a question about ____

•3. Make a hypothesis (educated guess)

•4. Make a hypothesis-based prediction

•5. Test your hypothesis

•6. Graph the results and Iterate.

Answer:

The steps of the scientific method are:-

●Report the Results.

●Ask a Question.

●Test the prediction.

●Make an observation.

●Form a hypothesis, or testable explanation.

●Make a prediction based on the hypothesis.

The values that determines the number of significant figures in the answer is 3.72

In mathematics and science, a significant figure refers to any figure that contributes to the degree of accuracy of a value that is being measured.

The value having the value having the least number of significant figures in a multiplication determines the number of significant figures in the answer.

In this case, 3.72 has the least number of significant figures hence it determines the number of significant figures in the answer.

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Answer:

3.72

Explanation:

3.72 has the least number of significant figures which means the number of significant figures is the answer.

Answer:

https://www.plps-k12.org/site/handlers/filedownload.ashx?moduleinstanceid=2482&dataid=3257&FileName=Ch%2017%20Electrochemistry%20Practice%20Problems%20I%20-%20key.pdf

Explanation: This is all the answers just go to this link to help is a bunch of pages to help and with answers on them too! Can I get brianliest plz

The intensive properties are useful for identifying a substance because it does not depend upon the amount of substance present in the sample.

The points regarding properties are the following:

Therefore, the correct answer is the A. They do not depend on the amount of substance you have.

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Answer:

Density=Mass/Volume

7.265=M/5.5

Mass=7.265×5.5g

=39.9575g

Answer:

5H²O= 23

ZnCl²=135

have a great day

Answer:

Hope this helps.

Explanation:

See the picture. Hope it helps. Sorry if i was incorrect.

Answer:

elements

Explanation:

possibly elements

wE know

[tex]\boxed{\sf E\propto T}[/tex]

Hence If Kinetic energy is doubled Temperature will also be doubled.

[tex]\\ \sf\longmapsto T=12(2)=24°C[/tex]

The kinetic energy is directly proportional to the temperature. Hence, as kinetic energy doubles, the temperature become  approximately 297.15°C.

Kinetic energy is the energy generated by virtue of the motion of the substance.

Assuming the pressure and volume of the gas sample are constant, the temperature of an ideal gas is directly proportional to its average kinetic energy. When the total kinetic energy of the gas doubles, its temperature will also double.

To calculate the new temperature of the sample, we can use the following equation:

(T2/T1) = (E2/E1)

where T1 is the initial temperature, E1 is the initial total kinetic energy, T2 is the final temperature, and E2 is the final total kinetic energy.

Since the total kinetic energy has doubled, E2 = 2E1. Substituting this into the equation, we get:

(T2/T1) = 2

Multiplying both sides by T1, we get:

T2 = 2T1

Substituting the initial temperature T1 = 12°C + 273.15 K = 285.15 K, we get:

T2 = 2 x 285.15 K = 570.3 K

Converting the final temperature from Kelvin to Celsius, we get:

T2 = 570.3 K - 273.15 = 297.15°C

Therefore, the new temperature of the gas sample is approximately 297.15°C.

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Glucose is a carbohydrate and monosaccharide sugar molecule that is the energy source for organisms. The simplified model of a glucose molecule will show six carbon atoms, six oxygen atoms, and twelve hydrogen atoms.

Glucose is one of the monosaccharide sugar that is the most abundant energy source with a molecular formula of C₆H₁₂O₆. It consists of carbon, hydrogen, and oxygen atoms with a molecular mass of 180.156 g/mol.

It is a sugar-containing aldehydic group with a six-carbon making it aldohexoses. It is found in honey and fruits that are the source of the energy and regulates metabolic and cellular reactions.

Therefore, the molecular structure of glucose contains six carbon, twelve hydrogens, and six oxygen atoms.

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Answer:

Fine chemicals are used as starting materials for specialty chemicals, particularly pharmaceuticals, biopharmaceuticals and agrochemicals. ... The term "fine chemicals" is used in distinction to "heavy chemicals", which are produced and handled in large lots and are often in a crude state.

Explanation:

Answer: Writing Formulas for Ionic Compounds Using Nomenclature Another important concept to master is the ability to write a chemical formula using the compound's systematic name.

Explanation:

Answer: 1

Explanation: one

Chloric acid is a neutral compound and an oxoacid with strong oxidizing power. In the compound (chloric acid), chlorine has an oxidation number of +5. Thus, option c is correct.

The oxidation number is defined as electrons that are transferred by accepting and donating in a chemical bond formation. They denote the atoms that have gained and donated electrons by the positive and negative states.

As chloric acid is a neutral compound, the equivalent will be zero. The oxidation state of the hydrogen atom is generally taken as 1 and that of oxygen as -2 as it requires two more electrons in its valence shell.

The oxidation number will be estimated as,

HCIO₃ = 0

+1 + x + 3(-2) = 0

+1 + x - 6 = 0

x = + 6 - 1

x = + 5

Therefore, option c. chlorine has a +5 oxidation number in chloric acid.

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The arrangement that orders the compounds by increasing boiling point based on predominant intermolecular force is; N2 < CO2 < NH3 < HF

The molecules that compose a substance are held together by intermolecular forces. The physical properties of a substance such as boiling points depends on the nature of intermolecular forces between substances. The greater the magnitude of intermolecular interaction between bonding atoms the higher the boiling point.

Nitrogen and CO2 molecules are only held together by weak dispersion forces.  However, CO2 has a higher boiling point than N2 because CO2 has a higher molecular mass than N2.

Nitrogen is less electronegative than fluorine hence the magnitude intermolecular interaction via hydrogen bonding in HF is greater than that in NH3 consequently, the boiling point of HF is higher than that of NH3.

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Answer:

D

Explanation:

A scientist who is studying cancer with the goal of finding an effective treatment is doing applied research.

Applied research refers to scientific investigations that are conducted with the specific purpose of solving practical problems or improving existing technologies. In the case of cancer research, the scientist is aiming to find a treatment that can be directly applied to patients in order to combat the disease.

In contrast, pure research, also known as basic or fundamental research, is conducted to gain a deeper understanding of a particular phenomenon without any immediate practical application in mind. Pure research aims to expand scientific knowledge and explore new theories or concepts. While pure research may indirectly contribute to the development of applied research, its primary goal is to advance our understanding of the natural world.

In summary, a scientist studying cancer with the goal of finding an effective treatment is engaged in applied research, as they are conducting research with the intention of solving a specific problem and developing practical solutions for the benefit of cancer patients.

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Answer:

When an element is oxidized, it loses electrons

Answer:

The last option is the correct answer.

Explanation:

When an element is oxidized, it loses electrons. But when an element is reduced, it gains electrons. This is the basis of redox reactions.

However, an oxidizing agent oxidizes something else, and gets reduced, therefore gaining electrons. Meanwhile, a reducing agent reduces something else, and gets oxidized in the process, losing its own electrons.