59.6 ml of air is at 20.5 °C. What is its volume at 73.9 °C?

Answer:

it should be chlorine gas

Explanation:

Answer:

1.68 mol Ca(NO₃)₂

General Formulas and Concepts:

Atomic Structure

Stoichiometry

Explanation:

Step 1: Define

[Given] 275 g Ca(NO₃)₂

[Solve] mol Ca(NO₃)₂

Step 2: Identify Conversions

[PT] Molar Mass of Ca: 40.08 g/mol

[PT] Molar Mass of N: 14.01 g/mol

[PT] Molar Mass of O: 16.00 g/mol

Molar Mass of Ca(NO₃)₂: 40.08 + 2[14.01 + 3(16.00)] = 164.10 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

1.67581 mol Ca(NO₃)₂ ≈ 1.68 mol Ca(NO₃)₂

Answer:

1.68 mol Ca(NO₃)₂

Explanation:

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

To determine the temperature at which the tire will burst, we can use the ideal gas law equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Rearranging the equation to solve for temperature, we have:

T = PV / (nR)

Given that the pressure threshold for bursting is 1.4 x 10^3 kPa, the volume is 30 L, and the number of moles of air is 2.5 mol, we can substitute these values along with the ideal gas constant R = 8.314 J/(mol K) into the equation.

T = (1.4 x 10^3 kPa) * (30 L) / (2.5 mol * 8.314 J/(mol K))

Converting kPa to Pa and L to m^3, and simplifying the equation, we find:

T ≈ 20,993 K

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

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Answer:

A

Explanation:

it has a methyl group, ethyl group and amine group

The correct IUPAC name for the structure shown in the provided image is "ethylamine." The structure consists of a central nitrogen atom bonded to two carbon atoms.

The correct IUPAC name for the structure shown in the provided image is "ethylamine." The structure consists of a central nitrogen atom bonded to two carbon atoms. According to the IUPAC naming rules, the longest carbon chain is selected as the parent chain, which in this case consists of two carbon atoms. The substituent attached to the parent chain is an ethyl group, denoted as "C2H5". The amine functional group, which consists of the nitrogen atom, is named as "amine". Since there is only one amine group attached to the carbon chain, it is referred to as "ethylamine." Therefore, option C) "ethylamine" is the correct IUPAC name for the given structure.
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The amount of force will be 320 N.

Force can be defined as the ratio of work and distance. The unit of the force will be Newton.  It can be represented by N. There are various type of force and they are tension force and frictional force.

The given data:

W = 8000J

d = 25m

The relation between the force, distance and work can be expressed as:

W = f×d....(i)

Put the given data in equation (i).

8000 J = f × 25m

f = 8000/25

f = 320 N

Therefore, the force will be 320 N.

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Active transport requires energy to transport the molecules across the cell membrane. Thus, Option A is correct.

Active transport is the transport of molecules from a lower concentration to a higher concentration across the cell (plasma) membrane. As this process is against the concentration gradient, it requires cellular energy to transport the molecules or ions. Active transport involves Primary active transport and secondary active transport.

Passive transport involves the movement of molecules from a higher to lower concentration gradient and thus does not require energy and is slower than active transport.

Therefore, only active transport requires energy for the transportation of molecules across the cell membrane.

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Answer:

6. false.  

chemical energy to heat and mechanical. Mechanical that runs the factory in the photo, and Heat energy that rises up in the atmosphere to join the other carbon

molecules in the air. 7. True. The arrow letter A is the transfer of solar power

from the sun, to a chemical reaction to produce food for the plant, which is

called photosynthesis. The leaves in the plant has chlorophyll that absorbs light

energy and transforms it to food.8. The answer would be letter C and F. C because It is

during the burning of the fossil fuels that the carbon dioxide is release into

the atmosphere. When burning the fossil fuels the carbon that was inside the

fossils is released. This also happens with diesel and other forms of natural

gas. While, F is because plant

respiration releases some of the carbon remains of the photosynthesis. While

plants do absorb carbon dioxide, part of their end product also includes reformed

carbon dioxide. Most of the other processes in the phot uses carbon or absorbs

carbon dioxide to aid their sustenance.9. A carbon cycle for living things would be A or B to F

wherein the plants absorb carbon dioxide to aid their production of food, and

then releasing carbon dioxide again as a by product of their food production.

This also happen to aquatic plants.An example of a non-living carbon cycle would be, D or E to

C. This would be the absorption of the carbon on our sea waters or to our soil,

this then gets trapped in there until it is release like through the forms of

fossil fuel burning.10. The law of conservation of mass and energy states that

matter can neither be created nor destroyed, this is very much evident in the

carbon cycle. Because the carbon from the light energy from the sun, or in our

atmosphere, ends up back to our atmosphere just to continue its cycle. The fact

that the carbon cycle is a cycle not just a linear equation proves that energy

can neither be created nor destroyed.

Explanation:

The ideal gas relationships among the variables are PV = nRT

An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.

Volume is a degree of occupied three-dimensional space. it's far more frequently quantified numerically the usage of SI-derived gadgets or by way of diverse imperial gadgets. The definition of length is interrelated with the extent.

An ideal gas is described as one for which both the extent of molecules and forces between the molecules are so small that they have got no effect on the behavior of the gas. The real gas that acts almost like a really perfect gasoline is helium. that is due to the fact helium, in contrast to maximum gases, exists as an unmarried atom, which makes the van der Waals dispersion forces as low as viable

relation

PV = nRT

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Here, we are required to determine the pressure of the sample of gas trapped in the open-tube mercury manometer shown below if Atmospheric pressure is 767 mmHg and pressure head, h = 8.9 cmHg.

According to the question;

The absolute pressure, P(abs);

is given mathematically as;

Absolute pressure = Atmospheric pressure + gauge pressure.

P(abs) = P(atm) + P(gauge)

P(abs) = 767mmHg + 89mmHg.

P(abs) = 856 mmHg.

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As a result, the ideal gas law is applied, and the pressure of the gas in the container is 1.44 atm.

The Kelvin temperature and hence the volume are going to be in direct proportion when the pressure on a sample of a dry gas is held constant, according to the definition of the Charles Law Formula. PV = k is the law's equation, and k might be a constant.

This issue can be resolved by applying the ideal gas law:

PV = nR

T = -52 °C + 273.15 = 221.15 K

n = 0.642 mol

V = 8.6 L

T = 221.15 K

\(R = 0.0821 L·atm/mol·K (gas constant for ideal gases)\)

PV = nRT

P = nRT/V

P = (0.642 mol)(0.0821 L·atm/mol·K)(221.15 K)/(8.6 L)

P = 1.44 atm

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Answer:

THE HEAT NEEDED TO CHANGE 3KG OF WATER FROM 10 C TO 80 C IS 877.8kJ OR 877,800 J.

Explanation:

Mass = 3.0 kg = 3 * 1000 = 3000 g

Initial temperature = 10 C

Final temperature = 80 C

Change in temperature = 80 - 10 = 70 C

Specific heat of water = 4.18 J/g C

Heat needed = unknown

Heat is the amount of energy in joules needed to change a gram of water by 1 C.

Heat = mass * specific heat * change in temperature

Heat = 3000 g * 4.18 J/g C * 70 C

Heat = 877 800 Joules

Heat = 877.8 kJ.

The heat needed to change 3 kg mass of water from 10 C to 80 C is 877,800 J or 877.8 kJ.

Answer:

(1) 4- ethyl -6 methyl -2 octyne

The statement which interpret the object motion is the object moves with a constant positive velocity and then stops moving. The slope represents velocity. Therefore, option B is correct.

The term velocity is defined as vector expression representing the change in position over time of an object or particle. It is also known as speed.The unit of velocity magnitude is the meter per second (m/s).

A positive velocity merely indicates that an object is moving in the coordinate system's positive direction, whereas a negative velocity denotes that the item is going in the opposite direction.

Thus, option B is correct.

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ANSWER

The element is carbon

Symbol of the element is C

The number of proton is 6

The number of neutron is 6

The atomic number is 6

EXPLANATION

The number of electrons = 6

The mass number of the element = 12

In a neutral atom, the number of electrons is always equal to the number of proton.

Since the number of electrons is 6, then the number of protons is 6

Recall, that mass number is the summation of number of proton and number of neutron

Mass number = number of proton + number of neutron

12 = 6 + number of neutron

Subtract 6 from both sides

12 - 6 = 6 - 6 + number of neutrons

Number of neutrons = 6

Therefore, the number of neutron is 6

The atomic number of the element is 6

The element is carbon

The atomic number represent the number of protons in an atom

We know already from particulate nature of atom that an atom is made up three sub-particles. These are:

Each atom has atomic number and mass number.

The atomic number of an atom is simply defined as the number of protons in an atom.

The mass number is the sum of the proton and neutron number.

From the above information, we can see that the atomic number is the number of protons,

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Answer:

i believe sand and gravel because you can sift the sand

Explanation:

The 5 elements that are safe are: gold (Au), silver (Ag), platinum (Pt), tungsten (W), and mercury (Hg). The 5 elements that are reactive are: sodium (Na), potassium (K), chlorine (Cl), fluorine (F), and oxygen (O). The 5 elements that are radioactive are: uranium (U), plutonium (Pu), radium (Ra), cesium (Cs), and strontium (Sr).

Safe elements are those that are non-reactive and non-radioactive. Examples of five elements that are safe include gold (Au), silver (Ag), platinum (Pt), tungsten (W), and mercury (Hg). The atomic structure of these elements makes them chemically stable and safe to handle without any special precautions.

Reactive elements, on the other hand, are those that readily undergo chemical reactions. These elements react easily with other substances, including air and water. Examples of five reactive elements include sodium (Na), potassium (K), chlorine (Cl), fluorine (F), and oxygen (O). These elements require special precautions when handling them due to their reactive nature.

Radioactive elements are those that emit radiation due to the instability of their atomic nuclei. These elements are unstable and spontaneously decay into other elements over time. Examples of five radioactive elements include uranium (U), plutonium (Pu), radium (Ra), cesium (Cs), and strontium (Sr). Due to the health risks associated with radiation exposure, these elements require special handling and disposal procedures.

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The mass percentage of carbon in the 8.80 mg sample of the compound is 59.2%

We'll begin by obtaining the mass of carbon in the compound. details below:

Mass of C = (12 / 44) × 19.1

Mass of C = 5.209 mg

Finally, we shall determine the mass percentage of carbon, in ompound. This is shown below:

Mass percentage of carbon = (mass of carbon / mass of compound) × 100

Mass percentage of carbon = (5.209 / 8.8) × 100

Mass percentage of carbon = 59.2%

Thus, the mass percentage of carbon is 59.2%

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The density of the gas can be given by the mass of the substance and its volume. A 4084 gms of ammonia has a volume of 5.99 L.

STP is the condition at which the temperature and the pressure of the gas are at the normal and standard conditions.

The density of the ammonia = 681.9gm/L

The mass = 4084 gm

The volume is calculated as:

V = Mass ÷ Volume

= 4084 ÷ 681.9

= 5.99 L

Therefore, at STP the volume of ammonia is 5.99 L.

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Answer:

Objects appear different colours because they absorb some colours (wavelengths) and reflected or transmit other colours. ... For example, a red shirt looks red because the dye molecules in the fabric have absorbed the wavelengths of light from the violet/blue end of the spectrum

A red object appear red because it absorbs light of wavelengths other than red. Therefore, option C is correct.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal propagated in space or along a wire is defined as the wavelength. This length is typically specified in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).

A transverse wave's wavelength is defined as the distance between two adjacent crests. A longitudinal wave's wavelength can be calculated as the distance between two adjacent compressions.

The wavelengths that are reflected or transmitted are what we see as colors. A red shirt, for example, appears red because the dye molecules in the fabric have absorbed light wavelengths from the violet/blue end of the spectrum. The only light reflected from the shirt is red light.

Thus, option C is correct.

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The amount of heat required to vaporize 181.20 g of ethanol would be 170.1 kJ.

Using the formula:

Q = n ∆Hvap

where:

Moles of 181.20 g of ethanol = 181.20 g / 46.07 g/mol = 3.933 mol

Substituting the values:

Q = 3.933 mol x 43.3 kJ/mol = 170.1 kJ

In other words, the amount of heat required to vaporize 181.20 g of ethanol is 170.1 kJ.

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The correct order of the particles that give texture to the soil from smallest to largest is clay, silt, and sand; option C.

Soil texture refers to a physical classification of the component and types of soils based on their physical texture either as coarse or fine particles.

There are several types of soils and these various types of soils have different textures.

The types of soils and their arrangement based on increasing particle size are as follows:

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Answer:

Molecular Formula

P4S6

Molecular Weight

316.3 g/mol

P\(_4\)S\(_6\) is the chemical formula of tetraphosphorus hexasulfide. These can only include one typographic line containing symbols.

A chemical formula is a way to describe the chemical ratios of the atoms that make up a specific chemical compound or molecule in chemistry. Chemical element numbers, symbols, and on occasion other symbols, including parentheses, dashes, brackets, commas, and plus (+) and minus () signs, are used to represent the chemical elements. Which may also include subscripts or superscripts. Since a chemical formula inherently wordless, it cannot be considered a chemical name. A chemical formula does not equal a complete chemical structural formula, despite the fact that it may suggest certain basic chemical structures. P\(_4\)S\(_6\) is the chemical formula of tetraphosphorus hexasulfide.

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Answer:

D

Explanation:

The ratio of C6H12O6 (which will be referred to as "the carb") to oxygen is 1 to 6, so if we find an answer which has the same ratio, it should be chosen. A is 1:3
B is even worse with a ratio of the carb to oxygen of 1:2
C is the same as B, 1:2
D has a ratio of the carb to oxygen of 1:6, which is what we are looking for.

Answer:

\(\bold{Heya!}\)

Wowie- nice cat... plus, he or she is fluffy...

Have a great day!

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\(\underline{Answer :}\)

XxVioletXx

Relationship between metal and ceramic is accurately represented by the statement that metal is a better conductor than ceramics.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold. Substances which enable conduction are called conductors.Conductors allow passage heat and electricity through the material.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

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Answer:

They increase from left to right and top to bottom.

Answer:

They increase from left to right and top to bottom.