What type of waves transmit signals in satellite communication?

A. Microwaves
B. X-rays
C. Gamma Rays
D. Radio Waves

Evaporation is the process by which a liquid converts into a gas or vapor at a temperature below its boiling point. Latent heat of fusion is the amount of heat required to convert a solid into a liquid without any change in temperature.  Steam causes more severe burning as compared to boiling water at 100°C due to the large amount of latent heat of vaporization.

On the other hand, boiling is the process by which a liquid turns into a gas or vapor at a temperature equal to or above its boiling point. In other words, when the liquid is heated to a temperature equal to or greater than its boiling point, it turns into a gas or vapor. The effect of humidity on the rate of evaporation is that if the air around the liquid is already humid, then the rate of evaporation will be slower because the air is already saturated with water molecules.
Latent heat of fusion is the amount of heat required to convert a solid into a liquid without any change in temperature. In other words, it is the amount of heat required to break the intermolecular forces between the molecules of a solid to convert it into a liquid.
Steam causes more severe burning as compared to boiling water at 100°C because steam contains a large amount of latent heat of vaporization. When steam comes in contact with the skin, it releases a large amount of latent heat of vaporization, which causes more severe burns as compared to boiling water at 100°C.

Evaporation is the process of turning a liquid into a gas or vapor at a temperature below its boiling point. Boiling, on the other hand, is the process of turning a liquid into a gas or vapor at a temperature equal to or above its boiling point. Humidity affects the rate of evaporation. Latent heat of fusion is the amount of heat required to convert a solid into a liquid. Steam causes more severe burning as compared to boiling water at 100°C due to the large amount of latent heat of vaporization.

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Dimethylsulfide forms when DMSO reacts with oxygen.

Oxidation reactions are reactions in which a compound or element reacts with oxygen to form an oxidized product.

In an oxidation reaction, the oxidation number of one of the compound that reacts increases.

In the reaction of DMSO with oxygen, dimethylsulfoxide is oxidized to dimethylsulfide.

In conclusion, the oxidation of dimethylsulfoxide yields an oxidized product.

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MgSO4 is the formula for magnesium

Answer:

b) salt dissolved in water.

The missing neutral reagent is an acid.To draw reagent A, we need to draw an acid. We can represent this as HX, where X represents a halogen atom. The exact halogen used will depend on the specific acid used. For example, if we used hydrochloric acid, X would represent a chlorine atom. If we used sulfuric acid, X would represent a sulfate group. The figure for the missing neutral reagent is given below.

The two esters below are synthesized from the starting materials shown. To complete the question, we must identify and draw the missing neutral reagent. Given below is the diagram for the question.Here, we can see that the two esters given above are being synthesized using two different neutral reagents. The first reagent, A, has not been provided, and we need to identify it.

To identify the missing neutral reagent, we need to follow these steps:

Step 1: Identify the oxygen atom in the ester we are trying to synthesize.In this case, the oxygen atom is part of the carboxylic acid part of the ester. It is the oxygen atom connected to the double bond in the starting material. We can see this in the figure.

Step 2: Identify the other functional groups attached to the carbon where the oxygen atom is located.In this case, there are two functional groups attached to the carbon where the oxygen atom is located. These are the ethyl group and the carbonyl group. We can see this in the figure as well.

Step 3: Identify the type of reaction needed to synthesize the ester from the starting material.We need a reaction that will combine the ethyl group and the carbonyl group to form the ester functional group. This reaction is called an esterification reaction.

Step 4: Identify the reagent needed for the esterification reaction.In this case, we need a reagent that is capable of removing a hydrogen atom from the ethyl group and an oxygen atom from the carbonyl group. The reagent that can do this is an acid.

Therefore, the missing neutral reagent is an acid.To draw reagent A, we need to draw an acid. We can represent this as HX, where X represents a halogen atom. The exact halogen used will depend on the specific acid used. For example, if we used hydrochloric acid, X would represent a chlorine atom. If we used sulfuric acid, X would represent a sulfate group. The figure for the missing neutral reagent is given below.

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The answer is FALSE. I did it on ck-12

Using the equation q = mcΔT, where m = 28.6 g, c = 4.184 J/(g⋅°C), and ΔT = 56.3 °C, the heat transferred (q) is approximately (c) 6.43 kJ.

To calculate q, the heat transferred, we can use the equation:

\(\[q = m \cdot c \cdot \Delta T\]\)

Where:

m is the mass of the water (in grams),

c is the specific heat capacity of water (in J/(g⋅°C)),

ΔT is the change in temperature (in °C).

Mass of water (m) = 28.6 g

Specific heat capacity of water (c) = 4.184 J/(g⋅°C)

Change in temperature (ΔT) = 78.3 °C - 22.0 °C = 56.3 °C

Substituting the values into the equation:

\(q = 28.6 \, \text{g} \times 4.184 \, \text{J/(g⋅°C)} \times 56.3 \, \text{°C}\)

q ≈ 6426.78 J

Converting J to kJ:

q ≈ 6.42678 kJ

Therefore, the value of q is approximately 6.43 kJ (option C).

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The property best accounts for the conductivity of metals is the free electrons in the valence level.

The metal conduct the electricity because of the free electrons on the valence energy levels. The conductivity is due to the free electrons. metal which have the highest conductivity is silver . the metal which has lower conductivity us aluminum. conductivity is defined as the measurement of the current that how it flow through a substance.  the si unit of the conductivity is siemens per meter.

Thus, The property best accounts for the conductivity of metals is the free electrons in the valence level.

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Answer:

1) 60°

2) 60°

3) 45°

4) E

5)90°

6) E

Answer:

Jupiter

Explanation:

it's big and the ring around it

Answer:

1.2 × 10^22 atoms.

Explanation:

Firstly, cations refers to the positively charged atom in the ionic compound, which is Na+.

Given the mass of NaCl as 1.17g, the number of moles of NaCl can be calculated this:

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mole = mass/molar mass

Mole = 1.17/58.5

Mole = 0.02moles

Using Avagadro's number, 6.022 × 10^23 atoms of Na+ are in 1 mole of NaCl.

In 0.02 moles of NaCl, there are 0.02 × 6.022 × 10^23 of Na+

0.1204 × 10^23 atoms

1.2 × 10^22 atoms of Na+ (cation)

The molecular formula from percent composition and empirical formula is C₅H₁₀O.

Empirical formula of a compound is defined as the simplest whole number ratio of atoms which are present in a compound.

Molecular formula is determined from the empirical formula by dividing the molar mass of a compound by the empirical formula mass. The resultant which should be a whole number or very close to the whole number , then the subscripts are multiplied by the whole number to get the molecular formula.

Here, for C= 69.8/12=5.82/1.16=5

for O= 18.6/16=1.16/1.16=1

for H=11.6/1=11.6/1.16=10

Thus, the  the molecular formula of this ester is C₅H₁₀O.

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The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

The atmospheric pressure at the given altitude h is

`P= P0 e^(-h/k) = 100 e^(-h/7) kPa`.

Atmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming from the Sun, trapping heat to warm the planet, and preventing extreme temperature differences between day and night. Atmospheric pressure drops as altitude increases.

The atmospheric pressure P (in kilopascals, kPa ) at altitude h (in kilometers, km ) is governed by the formula: `ln((P)/(P_(0)))=-(h)/(k)

where k=7 and P_(0)=100kPa`.

Now, solve the equation for P. Therefore, the atmospheric pressure at the given altitude h is

`P= P0 e^(-h/k) = 100 e^(-h/7) kPa`.

Hence, the required solution is P=100e^(-h/7) kPa.

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Answer:

Pressure (P) is defined as the force of all the gas particle/wall collisions divided by the area of the wall: pressure=forcearea..

Explanation:

All gases exert pressure; it is one of the fundamental measurable quantities of this phase of matter

Answer:

molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled.

Explanation:

Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.

Answer:

more energy is absorbed when the bonds in the reactants are broken

Answer:

eyes hair skin

Explanation:

eyes you can get from parents skin and hair

Answer:

Fnet = 13920 Newtons

Explanation:

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

\( Fnet = Fapp + Fg\)

Where;

Given the following data;

Mass, m = 800 kg

Acceleration, a = 7.6m/s²

To find the applied force;

\( Fapp = ma\)

Substituting into the equation, we have;

\( Fapp = 800 * 7.6\)

Fapp = 6080N

To find the gravitational force;

We know that acceleration due to gravity, g = 9.8m/s²

\( Fg = mg\)

Substituting into the equation;

\( Fg = 800 * 9.8\)

Fg = 7840N

To find the net force;

\( Fnet = Fapp + Fg\)

Substituting into the equation, we have;

\( Fnet = 6080N + 7840N\)

Fnet = 13920 Newton.

Therefore, the net force experienced is 13920 Newton.

The volume of a solution of iron (III) chloride is 1565.29 mL when it has a density of 1.118 g/mL and a mass of 1.75 kg.

Density may be defined as a type of physical property that significantly deals with the description of how much space an object or substance takes up with respect to the amount of matter in that object or substance.

In a more simple sense, it is characterized as the measurement of quantity or mass per unit of volume in a particular substance.

According to the question,

The density of iron chloride solution = 1.118 g/mL.

The mass of iron chloride solution = 1.75 kg.= 1750 g.

The formula for calculating the density is as follows:

Volume = 1750 g/1.118g/mL = 1565.29 mL.

Therefore, the volume of a solution of iron (III) chloride is 1565.29 mL when it has a density of 1.118 g/mL and a mass of 1.75 kg.

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Answer:

Answer:

Kc = 0.20        

Explanation:

                 N₂O₄     ⇄    2NO₂

moles       5.3mol          2.3mol

Vol               5L                5L

Molarity    5.3/5M        2.3/5M

               = 1.06M     = 0.46M

Kc = [NO₂]²/[N₂O₄] =  (0.46)²/(1.06) = 0.1996 ≅ 0.20

Note:

All credit goes to  drpelezo (Ace) who created and explained the answer.

Have a nice day, and I hope this helps

-kiniwih426

Given: Volume of solution, V = 10 mLConcentration of solution, C = 0.5 mol/L.

With this, we can convert the volume from mL to L by dividing it by 1000. Therefore,V = 10 mL = 10/1000 L = 0.01L. Now, we can use the formula: n = C x V where,n = number of moles C = concentration of solutionV = volume of solution. Plugging in the values, we get,n = 0.5 mol/L x 0.01 L= 0.005 mol. In chemistry, mole is defined as a unit for measuring amount of substance. The symbol used for mole is 'mol'. This unit helps to express the number of particles in a sample of substance. For instance, one mole of a substance contains 6.022 x 10²³ particles of that substance.A solution is a homogeneous mixture of two or more substances. The concentration of a solution refers to the amount of solute present per unit volume of the solution. It is usually expressed in moles per litre (mol/L) or molarity.

Molarity is defined as the number of moles of solute present in one litre of solution. It is given by the formula:M = n/Vwhere,M = molarity of the solutionn = number of moles of solute presentV = volume of the solution in litresIn the given question, we are given the volume of solution and its concentration. Therefore, we can use the formula:M = n/Vto find the number of moles of HCl present in 10 mL of a solution with a concentration of 0.5 mol/L. There are 0.005 moles of HCl present in 10 mL of a solution with a concentration of 0.5 mol/L.

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Answer:

Condensation

Explanation:

the process of evaporation and condensation takes 7.5 times as much energy as melting or freezing.

According to the forces of attraction, condensation process  requires more energy to be released,as in the process state is changing from less orderly state to a more orderly state.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

the correct answer is b. Co2...............

The volume of gas is 3,949.31 litre, occupied by 1.74 moles of SF6 (g) at 273 K and 1 atm.

The ideal gas law is also called as perfect gas law. It is the relation between the pressure P, volume V, and temperature T of a gas.  

Given:

Volume of gas = ?

Number of moles (n) = 1.74 moles

Temperature (T) = 273K

Pressure (P) = 1 atm

R (gas constant) = 8.314

By an ideal gas equation

PV = nRT

By putting above value in ideal gas equation, we get

1 × V = 1.74 × 8.314 × 273

V = 3,949.31 litre

Thus, The volume of gas, in L is 3,949.31 litre, occupied by 1.74 moles of SF6 (g) at 273 K and 1 atm.

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Answer:

12:7

Explanation:

To Determine: To calculate the formula of the unknown binary compound of oxygen and nitrogen and to ratio in the next compound of the series using given data.Answer:The formula of the unknown compound .The ratio for atoms of oxygen to nitrogen inis .The mass ratio of oxygen to nitrogen in next member of the series of compounds is .Explanation:The mass ratio of toinis .The mass ratio of toin theunknown compound is .The atomic mass of the oxygen is .The atomic mass of the nitrogen is .The mass ratio of to in a molecule can be represented as: …… (1)Here,is the number of atoms of the oxygen in the molecule.is the mass of an atom of oxygen.is the number of atoms of the nitrogen in the molecule.is the mass of an atom of nitrogen.For unknown compound, substitutefor , for and for mass ratio in equation (1).The ratio of atoms of oxygen to nitrogen is , therefore, the expected formulas of the unknown compound is and . If the unknown compound is in a series with then the formula of the unknown compound and the formula for the next member of the series is .The ratio for atoms of oxygen to nitrogen inis .For , substitute 5 for , for , 2 for and for in equation (1).The mass ratio of oxygen to nitrogen in next member of the series of the compounds is .

The mass of 12 mL of the substance is 183.6 grams.

To calculate the mass, we can use the formula:

Mass = Density x Volume

Given that the density is 15.3 g/mL and the volume is 12 mL, we can substitute these values into the formula:

Mass = 15.3 g/mL x 12 mL

Multiplying these values gives us:

Mass = 183.6 grams

Since the density is given to three significant figures and the volume is given to two significant figures, we round the answer to match the least number of significant figures, which is two. Therefore, the mass of 12 mL of the substance is 183.6 grams.

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If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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To determine the mass of CO2 produced by the neutralization of 25.0 mL of 6.00M H2SO4 using excess NaHCO3, we need to use stoichiometry.

The balanced chemical equation for the reaction is: H2SO4 + 2NaHCO3 → Na2SO4 + 2H2O + 2CO2

First, we need to convert the volume of H2SO4 to moles:25.0 mL × (1 L / 1000 mL) × (6.00 mol / 1 L) = 0.150 mol H2SO4

Next, we can use the mole ratio from the balanced equation to determine the moles of CO2 produced:0.150 mol H2SO4 × (2 mol CO2 / 1 mol H2SO4) = 0.300 mol CO2

Finally, we can convert the moles of CO2 to grams using the molar mass of CO2 (44.01 g/mol):0.300 mol CO2 × (44.01 g / 1 mol) = 13.2 g CO2

Therefore, the mass of CO2 produced by the neutralization of 25.0 mL of 6.00M H2SO4 using excess NaHCO3 is 13.2 g.

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The relative changes in concentration of the substances involved in an equilibrium as the system equilibrates can be determined by looking at the: C. Stoichiometry of the equilibrium

C. Stoichiometry of the equilibrium. The relative changes in concentration of the substances involved in an equilibrium as the system equilibrates can be determined by looking at the stoichiometry of the equilibrium, which tells us the ratios in which the reactants and products are consumed and produced.

This allows us to predict how the concentrations of the substances will change as the equilibrium is established.

The temperature and pressure of the system may also affect the equilibrium, but they do not directly determine the relative changes in concentration of the substances.

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