Why are carbon atoms the building blocks for life?
their bonds are easily broken and repaired.
they have a negative charge to attract other atoms.
they can freely bond with any other atom.
thier bonds woth hydrogen are very stable.
​

Answer:

15

Explanation:

the proton and atomic number are the same hence it remains 15

The wavelength of the radio waves is 3.33 m

This is simply defined as the distance between two successive crests or trough

The velocity, frequency and wavelength of a wave are related according to the following equation

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

The wavelength of the radio wave can be obtained as illustrated below:

λ = v /f

λ = 3×10⁸ / 90×10⁶

λ = 3.33 m

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Answer:

Equation - citric acid & sodium bicarbonate ACID + CARBONATE --> SALT + WATER + CARBON DIOXIDE CITRIC ACID + SODIUM BICARBONATE ----> SODIUM CITRATE + WATER + CARBON DIOXIDE In this reaction, the sodium BICARBONATE is mixed with citric acid.

Explanation:

The wavelength of the proton is9.9 * 10⁻⁷ nm.

The wavelength of a particle or wave is the distance between successive point in phase in the particle or the wave.

It can be said to be distance between successive crests or troughs.

The wavelength of a moving particle is given by the De Broglie's equation as follows:

where h is Planck's constant = 6.63×10⁻³⁴ Js

m = mass of particle = 1.673 x 10⁻²⁷ kg

v is velocity of proton = 3.97 x 10⁸ m/s

λ = 6.63×10⁻³⁴/1.673 x 10⁻²⁷ * 3.97 x 10⁸

λ = 9.9 * 10⁻⁷ nm

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The volume of 4.213 x 10⁶ liters of hot air in milliliters is 4.213 x 10⁹ mL of hot air.

The volume of a substance is the amount of space that substance occupies.

The units for measuring volume of substances includes liters, milliliters, and cm³, dm³.

The milliliter is a smaller unit of the liter.

1 liter = 1000 milliliters

To convert 4.213 x 10⁶ liters of hot air to milliliters, the values is multiplied by 1000.

4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁶ * 1000 mL/L

4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁹ mL of hot air.

In conclusion, to convert volume in liters to milliliters, the value in liters is multiplied by 1000.

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Filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.

For example, the suspension of chalk dust in water can be bestseparated using filtration.

All these explained above are various types of separation techniques in chemistry.

Insoluble solids are solids which cannot dissolve in water.

Miscible liquids are liquid which combine together to form a single liquid.

Separation technique refers to the process of separating the components of mixtures.

So therefore, filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.

Complete question:

Explain what is meant by filtration, chromatography and distillation.

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According to the given statement the volume of concentrated aqueous HCI is V (ml) = 32.3 ml

In the food, textile, metal, and rubber sectors, Hydrochloric acid (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. It is neutralized when released into the environment, and it immediately hydrolyzes when it comes into contact with water.

The molecular weight of HCl = 36.461

The valence (n) of hydrogen = 1

Equation 1:

Weight of HCl needed = 0.20 eq/L * 2.0 L * 36.461 g/eq

Rewriting the equation:

Weight of HCl needed

= 0.20 eq /1000ml * 2000 ml * 36.461 grams/eq

Weight = 14.5844 grams

The weight of HCl is related its current diluted volume by the equation:

Equation 2:

Weight =V(ml) * 1.188grams * 0.38/ml

Combining eq 1 and eq 2 us eq 3

Equation 3:

14.5844 grams

=V (ml) * 1.188 grams * 0.38/millilitres

Solving for V (ml):

V (ml)

= 14.5844 grams * ml/1.188 grams * 0.38

Rounding off and Cancelling out units,

V (ml) = 32.3 ml

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Because the stone will accelerate owing to gravity after it is dropped at a rate of 9.8 metres per second squared, you may use physics to compute the depth of the ocean by applying the distance formula: D = v0 t + 1/2 a*t2.

the gravitational force

In addition, gravity is pulling the thing downward as it falls. Gravity is an imbalanced force at the beginning of a descent. As a result, the thing

The statute addresses the issue of bodies falling. According to the rule of parabolic fall, a falling body's distance travelled is squarely inversely related to the amount of time it takes to descend. As an illustration, a stone that is dropped twice as long as another stone will fall four times as far.

The force of gravity accelerates items as they descend to the ground.

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In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

uranium-235 bombarded with neutrons produce strontium-94 , another small nucleus and 3 neutrons.

[tex]_{92} U^{235}[/tex]    +    [tex]^{1} n_{0}[/tex]   ------>    [tex]^{94} Sr_{38}[/tex]    +    x   +   [tex]3^{1} n_{0}[/tex]     ( x i unknown nucleus)

in this, the atomic no. and atomic mass in both the side should be same

atomic mass => 235 + 1 = 94 + 3 = 139

atomic no. 92 =  38  => 92 - 38 = 54  ( this is xenon - 139 , the unknown nucleus)

the balance nuclear equation equation is

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

Therefore,In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

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If the temperature is lowered to a dew point, condensate will be produced.

While the air temperature drops underneath its dew factor, excess moisture can be released in the form of condensation. Condensation problems are maximumly probable to occur in climates in which temperatures regularly dip to 35°F or colder over a prolonged time period.

The dew factor is the temperature to which air needs to be cooled to emerge as saturated with water vapor, assuming steady air stress and water content. while cooled beneath the dew point, moisture potential is reduced and airborne water vapor will condense to form liquid water known as dew. Both the air is cooled to its dew point or it becomes so saturated with water vapor that it can't maintain any extra water. The dew factor is the temperature at which condensation occurs

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Explanation:

The given values:

Mass, m = 100.0 g

Density, d = 1.59 g/mL

As we know,

→ D = m/v

By substituting the given values, we get

v = m/d = 100/1.59

v = 62.89 ≈ 63mL

The experiment makes use of Archimedes' principle, where the volume of a liquid displaced by an object, is equal to the volume of said object.

Thus, the volume displaced by the object is:

46.9 mL - 25.0 mL = 21.9 mL

The volume of the object is 18.9 mL

Density is equal to the mass divided by the volume, so:

D = m/V = 53.5 g/21.9 mL

D = 2.44 g/mL

For water,

ρ density = 1.0 g/mL

v = 425 mL

d = m/v

m = d × v

m = 1 × 425 = 425 g

Answer: Six grams

Explanation: The avocado has a high-fat content, but it is only half the fat content of other fruits and vegetables. One avocado has about six grams of fat.

The rating in kilometers per liter is 12.75 kilometer per liter

1 mile per gallon = 1.60934 Kilometer per gallon

Therefore,

30 miles per gallon = 30 × 1.60934

30 miles per gallon = 48.2802 kilometer per gallon

1 kilometer per gallon = 0.264172 kilometer per liter

Therefore,

48.2802 kilometer per gallon = 48.2802 × 0.264172

48.2802 kilometer per gallon = 12.75 kilometer per liter

Thus, the rating in kilometer per liter is 12.75 kilometer per liter

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The density of sulfuric acid is 2 g/mL.

The density of the sulfuric acid is calculated as follows:

mass of empty flask = 100.0 g

mass of flask + water = 600.0 g

mass of water =  600 - 100

mass of water = 500.0 g

density of water = 1 g/mL

volume of water = 500 g/1g/mL

Volume of water = 500 mL

Volume of flask = 500 mL

mass of flask + sulfuric acid = 1100. g

mass of sulfuric acid = 1100 - 100

mass of sulfuric acid = 1000 g

volume of sulfuric acid = 500 mL

density of sulfuric acid = 1000 g/ 500ml

Density of sulfuric acid = 2 g/mL

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The correct answer is :

The "signal" of the building is enhanced with more steel, which allows the technology to more precisely detect users. The technique used by IndoorAtlas is only effective inside.

Steel and concrete contribute to the distinctive magnetic fingerprints or signatures of structures, as the business notes on its website:

In a manner similar to how animals use the Earth's magnetic field, although on a smaller spatial scale, modern buildings with reinforced concrete and steel constructions contain distinct spatially variable ambient magnetic fields that can be used for locating. According to the path that is passed through a non-uniform ambient magnetic field, different magnetic field observations result.

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Answer:

Alliteration

Hope this helps :)

Hope this helps :)Explanation below.

Explanation:

The word S is repeated many times in the sentence, so alliteration would be the correct answer.

The concentration of Fe[tex]^+2[/tex] ions is 0.0088 M, and 29.33 L of K₂Cr₂O₇ is required for the titration.

Concentration of a titrand when volume is given can be calculated as,

M₁V₁=M₂V₂

Likewise volume of titrand can also be calculated by the same formula.

In the given problem, concentration of KMnO₄ =0.0216 M and it's volume=20.62 ml or 0.0206 L, volume of Fe[tex]^+2[/tex] ions=50 ml or 0.05 L

substituting the values in the formula,

M₁=0.0216×0.0206/0.05=0.0088 M.

For calculating the volume of potassium dichromate using the same formula ,

V₂=0.0088×0.05/0.015=0.02933 ml or 29.33 L.

Thus, the concentration of iron(II) ions in sample is 0.0088 M and 29.33 L of 0.015 M potassium dichromate is used for doing the same titration.

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Answer:

melt;freeze

Explanation:

and I don't have an explanation

An absolute pressure of precisely 105 Pa and a temperature of 273.15 K (0 °C, 32 °F) are considered to be STP (100 kPa, 1 bar).

The temperature at a given volume is directly proportional to the pressure of given quantity of that gas. A system's pressure increases as its temperature rises and vice versa. The Gay-law Lussac's establishes the relationship between pressure and temperature of a gas.

The average kinetic energy of the gas's molecules directly relates to its temperature. Faster moving particles will more frequently and violently collide with the container walls. Because of this, the force acting on the container's walls increases, increasing the pressure.

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Answer:

1000 kg = 1 g

Explanation:

1000 g = 1 kg

please make my answer as brainelist

The value in mile is 8.35 * 10^12 miles.

It is often important to be able to convert values from one unit to another. This has always helped to make mathematical and physical computations much easier.

The conversion factor is often used to convert from one unit to another. It serves as bridge that would enable us to be able to convert quantities. The conversion factor has to be dimensionally correct.

Let us now convert  1.42 light-years to miles;

1.42 light years *  3.00 × 108 m/1 s * 1 mi/1609 m * 3600 s/1 hr * 24 hrs/1 day  * 365 days/1 year

= 8.35 * 10^12 miles

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Answer:

Results or D.

Explanation:

I think it’s d. or results because normally that’s were I would put my information once I have my experiment done.

From the images, hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.

Given the Arrhenius definition of an acid, an acid is any substance that produces hydrogen ion in solution as its only positive ion when dissolved in solution. We know that that acids could be strong or weak. Acids could also be organic or mineral. In this later classification, acetic acid is an organic acid while hydrochloric acid is a mineral acid.

With is said, let us now examine each of the beakers. We can see from each of the beakers that the beaker that contains the hydrochloric acid has the acid molecule completely dissociated to hydrogen ions and chloride ions.

In the other beaker that contains the acetic acids, there are only a few of the acetic acid molecules that have dissociated into hydrogen ion and the acetate ion.

As such, it is clear that hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.

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The cation is [tex]V^3^+[/tex] and the anion is [tex]Cl^-[/tex] in [tex]VCl_3[/tex].

An ionic compound is a chemical compound made up of charged ions called cations and anions that are held together by electrostatic forces.

Cations are elements with one or more positive charges because they have more number of protons than electrons.

Anions are elements with one or more negative charges because they have more number of electrons than protons.

An ion which has lost electrons and now has a positive net charge is said to be a cation. An atom's cation is smaller than the neutral atom because electrons are taken out to produce a cation.

An ion which has acquired electrons and now has a negative net charge is called an anion. The anion of an atom is larger than the neutral atom because electrons have been added to produce it.

In Vanadium (III) chloride, vanadium gives 3 electrons and become +3 charge and chlorine gains 1 electron and become -1 charge. Since 3 electrons are given by vanadium, 3 chlorine atoms are bonded, thus the compound is [tex]VCl_3[/tex].

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The name of the given chemical in IUPAC is 3-5-ethyl5-3-methylheptane.

A cycloalkene, also known as a cycloolefin, is a form of alkene hydrocarbon that lacks the aromatic quality and possesses a closed ring of carbon atoms as well as one or more double bonds.

a functional group with a carbon-carbon double bond as its defining feature. When the carbon-carbon double bond is completely enclosed by another functional group, such as a benzene ring, we do not refer to the more intricate functional group as an alkene. basic alkene structure

Alkenes are a popular class of hydrocarbons that are present in crude oil. At least one carbon-carbon double bond exists in this family. The chemistry of the family's compounds is significantly altered by this double bond.

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Answer:

Since Walter can alter time and space he doesn't have the kind of place to take a nap or buy a cap for his dog zap

Explanation:

Answer:

Breaking Bad

Explanation:

walt

The energy needed to heat 5.95 g of water is 1484.406 J.

When work is done and heat and light are produced, energy is the quantitative quality that is transferred to the body or to the physical system.

The water is heated from 5.5° C to 64.9° C.

The mass of the water is 5.95 grams.

The specific heat of water is 4.2 J g⁻¹ C⁻¹ .

Now, the water is heated from:

T₁ = 5.5° C to T₂ = 64.9° C

Therefore, ΔT = T₂ - T₁ = 64.9 - 5.5 = 59.4° C

The heat energy is given as:

Q = m × C × ΔT

Q = (5.95 g ) × ( 4.2 J g⁻¹ C⁻¹ ) × ( 59.4° C )

Q = 1484.406 J

The energy released on heating 5.95 g of water from 5.5° C to 64.9° C is 1484.406 J.

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Potassium bromide is a substance that is soluble in the water and does not sublime. We can separate these two components of a mixture by heat.

Sublimation is a phase change process where solid material directly changes into a gas material. In this kind of phase change, solid material does not undergo a liquid state. At normal pressures, we usually do not observe sublimation unless the pressure is low enough that liquid states of substance cannot exist at these pressures.

In order to separate naphthalene from the mixture, we can heat up the mixture gently in order to boil away the naphthalene. Since we will be dealing with vapor product here, we will need a special enclosed container that can capture the naphthalene vapors. Once captured, these vapors can become solid again but now separated from initial mixture.

Another way is, put it in a beaker. Use a smaller beaker filled half way with ice and water and place in larger one. It should be about an inch or two above mixture. Heat over a Bunsen burner and naphthalene will deposit on the bottom of smaller beaker. And in this way, naphthalene be separated from mixture of KBr and sand.

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A transformation which would describe the relationship between Triangle A and Triangle B is: C. reflection.

Generally, there are different types of transformation and these include the following:

A reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.

In this context, we can reasonably infer and logically deduce that a transformation which would describe the relationship between Triangle A and Triangle B is reflection because they are both mirror image of one another.

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Complete Question:

What transformation would describe the relationship between Triangle A and Triangle B?

a. rotation

b. dilation

c. reflection

d. slide