tion 6 of 30
at type of nucleus is the strong nuclear force greater than the
rostatic force?

580.47 Kelvin

Gas stored in a tank at 273 K has a pressure of 388 kPa. The safe limit for pressure is 825 kPa.

temperature will the gas reach this pressure =

as per above statement, we have got

p1 = 388 kPa                     P2 =  825 kPa

T1 = 273 K                         T2 =

as per ideal gas equation PV = nRT

since n, V , R is constant , so we ignore them,

now equation will become

P1/T1 = P2T2

now putting the values

388/273 = 825/T2

T2 = 825 * 273 ÷ 388

T2 = 224,225/388

T2 = 580.47 Kelvin

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The number of grams in 1.70 moles of Ca(NO₃)₂ is 384.2 grams

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

With the above formula, we can determine the mass of Ca(NO₃)₂ as illustrated below:

Mole = mass / molar mass

1.70 = Mass of Ca(NO₃)₂ / 226

Cross multiply

Mass of Ca(NO₃)₂ = 1.70 × 226

Mass of Ca(NO₃)₂ = 384.2 grams

Thus, the mass of 1.70 moles of Ca(NO₃)₂ is 384.2 grams

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The final temperature of a rhodium metal that has a specific heat of 0.240 J/gK is 328.52K (55.52°C).

The final temperature of a metal can be calculated using the following formula:

Q = mc∆T

Where;

According to this question, 586J of heat is added to an 80.0 g block of rhodium metal that is initially at 25.0°C. The final temperature can be calculated as follows:

586 = 80g × 0.240J/gK × {T - 298}

586 = 19.2T - 5721.6

19.2T = 6307.6

T = 328.52K

Therefore, the final temperature of a rhodium metal that has a specific heat of 0.240 J/gK is 328.52K (55.52°C).

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The solvent is water.

What are solutes and solvents and how do you differentiate them?

Solute-

A solute is a material that can be broken down by a solvent to form a solution. There are numerous ways a solute can exist. It could be a solid, liquid, or gas. The solute is broken up and distributed among its molecules evenly by the solvent, or substance, which causes the solute to dissolve.

Solvent-

Solvents are substances that cause solutes to dissolve and form solutions. Although it can also be a solid, a gas, or a supercritical fluid, we always find solvent as a liquid.

Given that 12 ounces of frozen orange juice is mixed with 30 ounces of water (roughly 3 cans of water), to understand this we can simply write

          If 36 = 3

             12 = ?

             12×3 = 36×OJ

                   OJ = 1

,i.e, orange juice has one can and water has three cans.

1:3

Simply, orange juice is soluble in water because the solvent in this scenario is water. Due to its polarity and ability to form hydrogen bonds, water makes an excellent solvent, meaning that it can dissolve many different kinds of molecules.

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The answer is Option (d) Kelvin.

The SI unit used to measure the temperature of a substance is Kelvin.

It is defined as per the International System of units and is denoted by the symbol K.

The temperature can also be measure in the various units such as degree Celsius and degree Fahrenheit but the standard unit is Kelvin.

The temperature "0 K" is considered as the absolute temperature.

The widely used temperature measuring unit is degree Celsius in which water freezes at 0° Celsius and it boils at 100° Celsius.

The interval gap of degree Celsius is equal to the interval gap of degree Kelvin, and the interval gap of 1 degree Celsius is 1.8° Fahrenheit .

Also the 0° Celsius is 273 Kelvin.

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Answer:

Kelvin

Explanation:

Answer: Bromine

Explanation:

Answer:

Atomic Radius is confusing if you try to understand it with one atom alone.

I'll make it easy for you

so, imagine there are two identical carbon atoms, bonded together, now the distance between the nucleas of one carbon atom and the nucleas of the other carbon atom is Atomic Radius

it increases down the group in a periodic table

hope i helped you :)

The possible health issues a person with a magnesium deficiency could experience is osteoporosis and high blood pressure.

this is referred to as chemical element with atomic number of 12 and the sign is Mg.It is very important in the body as it helps in the proper functioning of the musculoskeletal system and also aids energy production in body cells.

A deficiency in this will result in osteoporosis and ways that people can be sure to take in enough magnesium and calcium to ensure their good health is by eating food which are rich in them such as vegetables, fruits etc.

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The average atomic mass of  istopes is 207.217126723 amu

Isotopes are members of family of an electron having same no. of protons but different no. of neutrons.

For the average atomic mass we have to multiply the masses to the abundance % of isotopes and then add all the mass.

1) 2.203.97304 amu has an abundance % of 1.390

    = 203.97304 × 1.390

    = 283.5225256/100 amu

2) 205.97447 amu has an abundance % of 24.11

      = 205.97447 × 24.11

      = 4966.0444717 /100 amu

3) 206.97590  amu has an abundance of % 22.09

      = 206.97590 ×22.09

      = 4572.097631 /100 amu

4) 207.9765  amu has an abundance of % 52.41

       = 207.9765 × 52.41

       = 10900.048365 /100 amu

now, the average atomic mass is

= (283.5225256 + 4966.0444717 + 4572.09731+10900.048365)/100 amu

= 207.217126723 amu

Therefore, The average atomic mass of  isotopes is 207.217126723 amu

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Atomic structure refers back to the structure of an atom comprising a nucleus (center) wherein the protons (undoubtedly charged) and neutrons neutral are gifted. The negatively charged particles called electrons revolve around the center of the nucleus.

10. The elements with the number of particles:-

a. 26 electrons and 26 protons are Iron Fe.

b. Iodine(I)

c. Helium (He)

d. Calcium (Ca)

e. Radon (Rn)

11. Yes/No

a. Yes

b. No

c. Yes,

d.Yes

12. Proton, neutral, negatively, electron

13. Proton and Neutron

14. Proton, Neutron,  mass number.

15. a. Proton, neutron electron.

     b. atomic number = 5

     c. mass number = 11

16. 36 - 25 = 11 neutrons.

An atom is a particle of depending that uniquely defines a chemical element. An atom includes a principal nucleus which is surrounded by way of one or greater negatively charged electrons. The nucleus is undoubtedly charged and carries one or greater distinctly heavy particles called protons and neutrons.

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Answer:

30

Explanation:

Density = mass over volume

1.35 = m ÷ 22

isolate m

1.35 × 22 = 29.7

2 sig figs

so,

30 grams

The mass of the given gas sample at STP is 28 grams.

The relation between the mass and density of any substance is given by -

M = ρV

Where -

M - mass of body

ρ - density of body

V - volume of body

Given is volume of a gas sample is 22 L at STP. The density of the gas is 1.35 g/L.

We can write -

Volume of gas = [V] = 22 L

density of gas = [D] = 1.3 g/L

Therefore, the mass of the gas will be -

M = ρV

M = 1.3 x 22

M =  28.6 g

Therefore, the mass of the given gas sample at STP is 28 grams.

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The elements used in a tesla are given below.

What is an element?

A chemical element is a type of atom with a certain number of protons in its nucleus, including the pure material made up entirely of that species. Chemical elements, unlike chemical compounds, cannot be broken down into simpler substances by any chemical process. The number of protons in an element's nucleus is its defining attribute and is referred to as its atomic number.

Aluminum, Copper, Titanium, Nickel, Cobalt, Manganese, Lithium, Iron, Phosphorus, Boron are the elements used in tesla vehicle.

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Heat is transmitted from hot to cold areas of a substance due to thermal conductivity.

When a temperature gradient leaves a region perpendicular to it, thermal conductivity is the rate of heat transfer by conduction through the material's unit cross-section area.

Thermal conductivity is measured in Watts per meter of thickness, per degree of temperature difference between two sides (W/mK). The amount of heat energy that a substance can convey depends on its thermal conductivity.

Thermal conductivity is the quantity and rate of heat transmission through a material. High thermal conductivity materials move heat more quickly than materials with poor thermal conductivity.

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Answer:

When magnesium oxide reacts with hydrochloric acid, magnesium chloride and water is formed. The reaction involved is: MgO+2HCl→MgCl2+H2O

Although the phospholipid molecules can be in constant lateral movement, they very rarely flip from one side of the bilayer to the other.Therefore the head groups are repelled by the hydrophobic membrane interior.

Even though they sometimes move laterally constantly. The hydrophilic heads of the lipid bilayer membrane, which may contain some polar or water-soluble molecules, face both the cytosol and the external environment, while the hydrophobic tails of both layers, which are completely insoluble in water, face one another, forming a core that discourages mixing. The possibility of molecules flipping is extremely unusual.

The class of lipids known as phospholipids is notable for containing phosphorus-containing compounds and having a significant function in living cells. Due to their amphiphilic properties, they are creating lipid bilayers.

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The complete question is ''Refer to Animation: Fluid Mosaic Model. Although the phospholipid molecules can be in constant lateral movement, they very rarely flip from one side of the bilayer to the other. Which of the following could explain this?A. The head groups are too large to fit between the interior fatty acid tails. B. The cholesterol keeps the phospholipids on the correct side. C. The molecular attraction between the fatty acid tails is too strong. D. The head groups are repelled by the hydrophobic membrane interior''.

Answer:

1001

Explanation:

Zeroes between non zero digits are significant

Answer:

1001 g and 120.0 mL

Explanation:

Zeros in-between natural numbers are significant

If your number has a decimal place, and you have zeroes after a natural number, then all the zeros are sig figs.

Ex: 10000.0 = 6 sig fig

Not: 0.00001 = 1 sig fig

Not: 0012.0 = 3 sig fig

Scientists utilize their knowledge of previous occurrences to establish a general principle or explanation that may be used to forecast future events.

Step 1: Collect data. These observations must be objective rather than subjective. In other words, the findings should be verifiable by other scientists. Subjective observations based on human ideas and beliefs do not belong in the world of science.

Step 2: Create a hypothesis. Our observations provide information about the past or the present. We want to be able to forecast future occurrences as scientists. As a result, we must employ our reasoning abilities.

A hypothesis is a name given to the general principle. Inductive reasoning is the sort of reasoning involved (deriving a generalization from specific details).

A hypothesis should include the following features:

• It should be a universal concept applicable across space and time.

• It should be a working hypothesis.

• It should be consistent with existing observations.

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The degree of unsaturation is 1, and the possible structures are propene and cyclopropane.

Because the compound doesn't contain any heteroatoms, the matter of calculating degrees of saturation is simply deducting the number of hydrogen atoms (6) from the one a three-carbon alkane would have (8) and dividing by two:
(8 - 6) / 2 = 1

Because a single degree of unsaturation means either a double bond or a ring, we can draw an example of each, sticking to the three-carbon formula. This way we end up with propene (double bond) and cyclopropane (ring).
In addition, these are the only structures possible for this molecular formula.

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Double covalent bonds are both shorter and stronger than single covalent bonds, but they also limit the geometry of the molecule because they create a new arrangement of electron shells.

The energy needed to break a double covalent bond is 614 J, whereas the energy needed to break a single bond is 349 J.

Since a double bond requires more energy to break than a single bond does, it is stronger than a single bond. As opposed to single bonds, which can spin freely, double bonds are constrained in their rotation, making them stronger.

In comparison to a single bond between the same two atoms or molecules, a double bond is both stronger and shorter. Even stronger and shorter is a triple bond.

A bond order of 1.5, such as that found in ozone, is stronger than a single bond but weaker than a double covalent bond.

There are two single bonds and one double bond in this molecule’s high electron density areas.

While the double bond results in somewhat bigger angles (121°), and the angle between the single bonds is slightly less (118°), the basic geometry is trigonal planar with 120° bond angles.

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Complete Question

Double covalent bonds are both shorter and stronger than single covalent bonds, but they also limit the geometry of the molecule because they ____________________.

(a) create a new arrangement of electron shells.

(b) change the reactivity of the bonded atoms.

(c) limit the rotation of the bonded atoms.

(d) prevent additional bonds from being formed with the bonded atoms.

2,259.675kj/mol

10.16g of pentane is burned in a calorimeter, 9.87kg of water are heated from 21.6(degree) to 33.7(degrees), the molar heat of reaction for carbon dioxide will be

From the above statement , we have found

pentane  C5H12 = 10.16g

H2O =  9.87kg

TI = 21.6°C             T2 = 33.7°C

C5H12+8O2=5CO2+6H2O

as per the reaction, one mole of pentane gives 5 mole of carbon dioxide

now:

molar heat of CO2 = ncΔt ,

here n is number of mole, c is specific heat, t is temperature

Q = 5 ×37.35× 12.1

Q= 2,259.675kj/mol

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According to bond energy, the maximum wavelength of light is 614 nanometers.

We need to know about bond energy to solve this problem. Bond energy is the energy needed to bond other atoms in the molecule. To determine the energy in one molecule of chlorine monofluoride, we can use this formula:

E = BE / Na

where E is the energy of photon, BE is bond energy and Na is Avogadro's number (6.02 x 10²³ atoms/mol)

Now, we can calculate the shortest wavelength by using Einstein's equation for photon energy:

E = h . c / λ

where h is Planck constant (6.6 x 10¯³⁴ J.s), c is the speed of light (3 x 10⁸ m/s) and λ is the wavelength.

From the question above, we know that

BE = 194 kJ/mol = 194 x 10³ J/mol

By substituting the given parameters, we can calculate the maximum wavelength

E = BE / Na

h . c / λ = 194 x 10³ / 6.02 x 10²³

6.6 x 10¯³⁴ . 3 x 10⁸ / λ = 194 x 10³ / 6.02 x 10²³

λ = 6.14 x 10¯⁷ m

λ = 614 nm

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The mass of the tin can with a density of 7.28g/mL and volume of 300.1mL is 2184.73 grams.

Density is simply referred to as mass of a unit volume of a material substance. It is expressed mathematically as;

p = m / v

Where m is mass and v is volume.

Given the data in the question;

To determine the mass of the tin can, plug the given values into the into the above formula and solve for m.

p = m / v

7.28 g/mL = m / 300.1mL

Cross multiply

m = 300.1mL × 7.28 g/mL

m = 300.1 × 7.28 g

m = 2184.73 g

The mass of the tin can with a density of 7.28g/mL and volume of 300.1mL is 2184.73 grams.

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Electrons were in orbits of both fixed size and energy.

The main features of Niels Bohr's proposed atomic model are listed below.

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According to the research, the correct option is C. A scatterplot identifies the problem and its variables showing quantitative data that relate two variables.

It is a control and support tool that shows a geometric design that presents the existing links and the level of correlation between variables and how one variable influences another.

In this sense, given that it is a tool or graphic representation it is widely used in statistics, that helps to identify the possible association between two related sets of data, it seeks to correlate said variables in order to better control the process and improve it.

Therefore, we can conclude that according to the research, the correct option is C. A scatterplot identifies the problem and its variables showing quantitative data that relate two variables.

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When atoms establish or break chemical bonds, chemical processes take place. Reactants are the chemicals that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

When a volcano erupts, glass, rock, and mineral particles are mixed together to form volcanic ash. Less than 2 millimetres in diameter, the particles are very tiny. They have a low density since they are frequently pitted and have numerous holes. In hydrated Portland cement, CSH is the primary factor in the development of strength, while calcium hydroxide is another hydration agent.

Silica granules generate non-explosive dusts when they are suspended in the atmosphere. To create silicates, silica can interact with other metallic elements and oxides. A silicon atom is covalently joined to two oxygen atoms to form silicon dioxide, a kind of silicon oxide composed of linear triatomic molecules.

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The chemical formula which represents an organic molecule is  CCl₂F₂.

Organic compounds are those which have carbon atoms in them whereas inorganic compounds do not have carbon atom in it, but their are some exceptions.

Among the give responses,

                    CCl₄ + 2HF -----SbF₅-----> CCl₂F₂ + 2HCl

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The mass of fuel in kilograms is 1.03 kg.

Steps of the equation:

The density of the gas sample in the canister is 0.710 grams/cm³.

We will use the density to relate the given volume of the canister (1.45 L) to determine the mass in kilograms of the fuel contained in one canister. We need to convert first the given volume in liters to cm³.

1000cm3=1L

The calculation will be:

Volume = 1.45L(1000cm/31L)

Volume=1.45×10³cm³

We can now determine the mass of the fuel.

mass = (0.710grams/cm³) × (1.45×10³cm³)

mass = 1.03×10³grams

We can now convert the calculated mass in grams to kilograms.

mass=1.03×10³grams(1kg/1000grams)

mass =1.03kg

Conclusion:

The mass of fuel in kilograms is 1.03 kg.

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The percentage abundance of Nz- 51 and Nz- 55 are 69.8 % and 30.2% respectively.

We know that an isotope of an element has to do with atoms that have the same atomic number but the atomic masses of the atoms does differ. In this case, we have two isotopes Nz - 51 and Nz -55. We have the relative atomic mass of the elements as  52.21 amu.

Let the percentage abundance of Nz - 51 be x and the percentage abundance of Nz -55 be 1 - x.

52.21 = 51x + 55(1 - x)

52.21 = 51x + 55 - 55x

52.21  - 55 = 51x   - 55x

-2.79 = -4x

x = 0.698

Thus;

Percentage abundance of Nz - 51  = 0.698 or 69.8 %

Percentage abundance of Nz - 55 = 1 - 0.698 or 30.2 %

If I have 63 atoms

Number with isotope Nz - 51  =  0.698 * 63 = 44 atoms

Number with isotope Nz - 55 = 0.302 * 63 = 19 atoms

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