Which equation shows how frequency is related to velocity and wavelength?

Answer:

The molecules are held together by intermolecular force of attraction. More the force the fusion takes after some time only that means the melting point is high. So molecules with greater molecular forces have high melting point and less molecular forces have low melting point.

Answer:

On heating a solid, the kinetic energy of the particle increases. The particle start vibrating with greater speed. The energy supplies by heat overcomes the force of attraction between the particles.

If this force of attraction is more, then more heat energy will be necessary to overcome this force. So, the melting point of the solid will be higher.

Answer:

2.5 M

Explanation:

.625 M / .250 Liter   = 2.5 M

-0.109 is the answer :)

You could basically just do column subtraction

Answer:

0.1077 grams

Explanation:

First we will employ the ideal gas law to determine the number of moles of nitrogen gas.

PV=nRT

P=2 atm

V=20L

R=0.08206*L*atm*mol^-1*K^-1

T=323.15 K

Thus, 2atm*20L=n*0.08206*L*atm*mol^-1*K^-1*323.15K

K, atm, and L cancels out. Thus n=2*20mol/0.08206*323.15=1.5 moles

Lastly, we must convert the number of moles to grams. This can be done by dividing the number of moles by the molar mass of nitrogen gas, which is 14 grams.

1.5/14=0.1077 grams

Answer:

Explanation:

False, there are 9 named classes of hazardous materials.

Hazardous materials are substances or chemicals that pose a health hazard, a physical hazard, or harm to the environment.

There are 9 hazardous substances symbols you need to know: flammable, oxidising, explosives, gas under pressure, toxic, serious health hazard, health hazard, corrosive and environmental hazard.

Hence, the statement is false.

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The combination of glue and water creates a physical change rather than a chemical change.

Physical changes are changes to the physical properties of materials and are usually reversible.

Chemical changes, on the other hand, are changes to the chemical properties of materials and are usually irreversible.

Mixing water with glue will only result in the glue being diluted with water and creates no chemical reaction. The glue can be recovered by distilling off the water.

Thus, mixing glues with water is only a physical change as the chemical properties of the glue remain intact.

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The solution to the polynomial expression since the power of the variable is in the second degree is 6.29 × 10² cm

The power of a variable refers to the exponent of the variable and the highest power of a variable is the degree to which the variable is being raised. From the information given, the highest power of the variable is a polynomial.

Given that:

[tex]\mathbf{= 2.150 \times 10^2 \ cm + 7.34 \times 10^2 \ cm - 3.2 \times 10^2 \ cm }[/tex]

So, since the exponents are in the same power we are going to add them all together multiplied by their exponent.

i.e.

[tex]\mathbf{= (2.150 + 7.34 - 3.2) \times 10^2\ cm }[/tex]

[tex]\mathbf{= 6.29 \times 10^2\ cm }[/tex]

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Answer:

option B = 0.410 g

Explanation:

hope this helps have hope i get brainliest

For a (unbalanced) reaction: NaOH +CO2-Na2CO3 + H2O, the moles of NaOH and moles of each product are formed are mathematically given as

a) Moles of NaOH =44.05

b)   Moles of Na2CO3=21.0

Generally, the equation for the Chemical reaction  is mathematically given as

2 NaOH(aq)+ CO2(g)------> Na2CO3(aq)+ H2O(l)

Therefore

Moles of CO2= 925/44

Moles of CO2=21.0

Hence

Moles of NaOH = 2 x Moles of CO2

Moles of NaOH = 2x925/44

Moles of NaOH =44.05

In conclusion

Moles of Na2CO3 925/44

Moles of Na2CO3=21.0

And

Moles of H2O= 925/44

Moles of H2O= 21.0

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2.N + 4.H = 0

2N + 4.1 = 0

2N=-4

N=-2

why did u gave answer before

Explanation:

1) Weather refers to temporary atmospheric conditions that are occurring at a given point and time. Climate refers to the average weather conditions that occur in an area over an extended period.

2) Regions nearer the equator receives sunlight more directly than regions located farther from the equator. As a result, regions near the equator experience warm temperatures all year. Regions located farther from the equator experience more temperature fluctuations.

3) An air mass containing extremely cold, dry air would likely be classified as a continental arctic air mass.

4) The ITCZ is the point at which trade winds from the Northern Hemisphere converge with trade winds from the Southern Hemisphere. This area typically experiences calm weather.

5) Polar jet streams occur at higher latitudes. They separate the polar easterlies from the prevailing westerlies. Tropical jet streams occur at lower latitudes. They separate the trade winds from the prevailing westerlies.

Answer:

the answer is 12

Explanation:

In one formula unit of Al2(SO4)3 A l 2 ( S O 4 ) 3 , there would be twelve atoms of oxygen.

Answer:

A. True

Explanation:

A metallic bond is a type of chemical bond formed between positively charged atoms in which the free electrons are shared among a lattice of cations. In contrast, covalent and ionic bonds form between two discrete atoms. Metallic bonding is the main type of chemical bond that forms between metal atoms.

The number of moles will be 0.178 moles. It can be calculated by ideal gas law.

The ideal gas law  gave the relationship between pressure, volume as well as temperature. It can be expressed as:

PV =nRT

Where, P is pressure, V is volume and T is temperature.

Calculation of number of moles by using ideal gas law.

Put the value of given data in above ideal gas law formula.

n = PV / RT

n = (1 atom × 4 L)/ (0.0821  × 273 K

n = 0.178 moles.

Therefore, the number of moles will be 0.178 moles.

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Answer:

0.0562

Explanation:

Ph=-log[H+]

to find the h+ is the antilogarithm of the Ph.

Which is 10 raised to the power - Ph.

Answer:

5.62

-2

Explanation:

What is the H+ concentration in a solution with a pH of 1.25? Round to the nearest hundredth.

5.62 × 10n M n= -2

Answer:

Yes, they are same

Explanation:

Glycosphingolipids are a subtype of glycolipids containing the amino alcohol sphingosine. They may be considered as sphingolipids with an attached carbohydrate. Glycosphingolipids are a group of lipids (more specifically, sphingolipids) and are a part of the cell membrane.

Answer:

glycosphingolipid is an example of sphingomyelin

Answer:

It's C. Mass Depends on the amount of matter and weight depends on gravity and mass.

Explanation:

Hope this helps

Answer:

ca2+ and po3+

Explanation:

these ions are formed after the dissociation of the compound

According to its location in the periodic table:

It is a table in which elements are ordered in Groups (columns) and Periods (rows).

According to their ubication and properties they can be classified in:

Let's locate and classify the following elements:

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Answer:

The water in the hydrate (referred to as "water of hydration") can be removed by heating the hydrate. When all hydrating water is removed, the material is said to be anhydrous and is referred to as an anhydrate.

Explanation:

If the water is not completely removed from salt during heating process it will result in higher mole ratio of water to salt as mass of water will also be accounted while calculating mole ratio.

Salt is defined as a chemical compound which is ionic in nature and consists of cation and an anion.It has no net electrical charge as the charges are completely neutralized in case of salts.

They are classified as acidic, basic or neutral salts depending on the ions they produce on dissolution.They have wide variety of colors depending on the elements from which they are formed and have five basic tastes.Salts are usually odorless  except a few exceptions . They are highly soluble in water and are insulators in the solid state, to make them conductive they need to be melted or dissolved.

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Answer:

211.2g/mol

Explanation:

[tex]mass \: of \: carbon = 12 \\ mass \: of \: lead = 12(17.6) \\ = 211.2gmol {}^{ - 1} [/tex]

Balanced equation:

NaCl + ( 1 ) AgNO₃ → ( 1 ) AgCl + ( 1 ) NaNO₃

(aq)               (aq)                (s)              (aq)

Both the sides are already balanced

The mass of sodium bicarbonate (NaHCO₃) used in the experiment is 1.997 g

From the question we are to calculate the mass of NaHCO₃ (sodium bicarbonate) used in the experiment

From the given information

Mass of empty evaporating dish = 46.233g

Mass of evaporating dish + Sodium bicarbonate = 48.230g

∴ Mass of sodium bicarbonate (NaHCO₃) = [Mass of evaporating dish + Sodium bicarbonate] - [Mass of empty evaporating dish]

Mass of sodium bicarbonate (NaHCO₃) = 48.230g - 46.233g

Mass of sodium bicarbonate (NaHCO₃) = 1.997 g

Hence, the mass of sodium bicarbonate (NaHCO₃) used in the experiment is 1.997 g

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Answer:

A

Does it live on land or sea.

Answer:

C:

I would check that does it have hair or not because hair provides info about the DNA which can help me if that specific animal has evolved from DNA of any other animal..

Hope it helped you.

The simplest way to make the color gray is by mixing white and black colors, but it can also be created by mixing colors such as red and green.

This is considered a neutral and cool color that can be naturally found in elements such as rocks.

This would not be a neutral gray as it will resemble a little bit the original colors.

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