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Calculate the approximate volume of a 0.500 mol sample of gas at 15.0°C and a pressure of 1.20 atm. Show all steps to solve the problem

The amplitude of a seismic wave usually decreases as the wave moves away from the epicenter due to the phenomenon of wave attenuation.

There are several factors that contribute to this attenuation:

Geometric Spreading: As the seismic wave propagates outward from the earthquake's epicenter, it spreads out over a larger area, resulting in the energy being distributed over a larger volume. This causes the amplitude of the wave to decrease with distance. According to the inverse square law, the intensity of the wave decreases with the square of the distance from the source. Absorption and Scattering: The seismic wave encounters various materials and geological structures as it travels through the Earth. These materials can absorb and scatter the energy of the wave, causing a reduction in its amplitude. Different types of rocks and soil have varying levels of attenuation, leading to differences in the decrease of wave amplitude.

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The combustion of methane produces carbon dioxide and water. 6230 L of methane will be produced in the reaction.

A combustion reaction is a chemical equation in which the reactant reacts in the presence of oxygen molecules. The combustion reaction of methane is given as:

CH₄ (g)+ 2O₂ (g) → CO₂ (g) + 2 H₂O(g)

From the reaction, it can be said that methane and water are in a ratio of 1: 2.

At STP the volume of water is

10L x 1g/ml x 1ml/0.001L = 1 × 10⁴g of water

Moles of water are:

1 × 10⁴g of water/18g/mole MW of water = 5.56x10² moles of water

From the ratio of methane and water and moles of methane are calculated as:

1/2 x 5.56x10² moles = 2.78x10² moles of methane

The volume of methane is calculated as:

2.78x10² moles of methane x 22.4L/mole = 6.23x10³ L of methane

Therefore, 6230 L of methane is required to produce 10 L of water.

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Answer:  1.2044 x 10^23 atoms in 0.2 moles of iron.

Explanation: The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which is approximately 6.022 x 10^23 atoms per mole. To find the number of atoms in 0.2 moles of iron, we can use the following steps:

1. Start with the given quantity of moles: 0.2 moles of iron.

2. Multiply the given quantity by Avogadro's number: 0.2 moles x (6.022 x 10^23 atoms/mole).

3. Calculate the product: (0.2 moles) x (6.022 x 10^23 atoms/mole) = 1.2044 x 10^23 atoms.

Therefore, there would be approximately 1.2044 x 10^23 atoms in 0.2 moles of iron.

Answer:

69.2°C

Explanation:

Recall the heat energy formula

q = cmΔT

where q = heat energy ( measured in joules ) , c = specific heat , m = mass and ΔT = change in temperature.

We are given that:

Given this we want to find the temperature change.

First we want to define our variables.

Again recall that heat energy (q) = 450J , mass(m) = 50g and specific heat (c) = 0.13 J/g(degC)

Now that we have defined our variables we plug in the values of the variables into q = cmΔT and solve  for the undefined variable

q = cmΔT

q = 450 , m = 50, c = 0.13

450 = (50) x (0.13) x (ΔT)

multiply 50 and .13

450 = 6.5 x (ΔT)

divide both sides by 6.5

69.2 = ΔT

The change in temperature was 69.2°C

A balanced chemical equation, which demonstrates that all mass is conserved throughout the reaction, demonstrates the law of conservation of mass. The quantity and types of atoms on either side of a chemical equation should be equal in a balanced chemical equation.

In accordance with the principle of mass conservation, There is neither creation nor destruction of mass during a chemical process. In other words, the total masses of the reactants and products must be equal.

The reactants of photosynthesis are sunlight, 6 carbon dioxide, and 6 water. The mass of the products, which are 1 glucose and 6 oxygen, is equal to the mass of these reactants added together. Contrarily, cellular respiration uses glucose and oxygen gas to create water, carbon dioxide, and ATP, a source of useable energy.

The products of photosynthesis are the reactants of cellular respiration, which is the reverse of photosynthesis. The law of conservation of mass is also observed during cellular respiration.

A balanced chemical equation, which demonstrates that all mass is conserved throughout the reaction, demonstrates the law of conservation of mass. The quantity and types of atoms on either side of a chemical equation should be equal in a balanced chemical equation.

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Answer: As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.

Explanation:

Answer:

mechanical digestion is the physical part of digestion

Answer:

mechanical digestion

Explanation:

Answer:

4.70 L

Explanation:

Use the basic relationship:

P1V1/T1 = P2V2/T2

Re-arrange to:

P1V1 T2 / (T1P2) = V2   To find the new volume

Sub in the values:

880 * .5 * 327 / ( 300*102) = 4.70 L

To transform a binomial into a perfect square trinomial, a constant needs to be added. The constant that should be added to a binomial to make it a perfect square trinomial is (a/2)²

To convert a binomial into a perfect square trinomial, we need to identify the constant that should be added. Let's consider a general binomial expression: (x + a). To make it a perfect square, we need to find the constant 'c' such that when added to the binomial, it becomes a square of a binomial.

To find 'c', we take half of the coefficient of the linear term, which in this case is 'a', and square it. The resulting expression is (a/2)². Adding this to the original binomial, we get:

(x + a) + (a/2)².

By expanding this expression, we obtain:

x² + 2(ax) + (a²/4).

This trinomial is now a perfect square, as it can be factored into the square of a binomial: (x + (a/2))².

Therefore, the constant that should be added to a binomial to make it a perfect square trinomial is (a/2)², where 'a' is the coefficient of the linear term.

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7380 J/g is the  amount of heat must be added to 75g of ethyl alcohol to heat it from -5c to 35c

What is specific heat capacity?

The quantity of heat energy needed to raise the temperature of a unit mass of any substance or matter by one degree Celsius is known as its specific heat capacity.

The formula is as follows:

Q= m c ΔT

Here, Q is the quantity of heat energy needed to raise the temperature of one kilogram of a substance by one degree Celsius, and s is the system's specific heat capacity.

Here,

m = 75g

c = 2.46J/g °C

ΔT = 40°C

Q = 75*2.46*40 = 7380 J/g

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Answer:

Option d is correct

Explanation:

The basis of the VSEPR model of molecular bonding is that to minimize repulsions, electron domains in the valence shell of an atom arrange on their own.

According to VSEPR theory, if there are two electron domains on a central atom, they will be arranged such that the angles between the domains are 180°

Answer:

Matter, Solid, Liquid, Gaseous.

Explanation:

Matter can exist in one of three main states: solid, liquid, or gas.

Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around.

Liquid matter is made of more loosely packed particles. It will take the shape of its container. Particles can move about within a liquid, but they are packed densely enough that volume is maintained.

Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume. A gas can be compressed.

The required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

To determine the required heat in BTU, for the water at 50°C to become ice at -50°C, we need to calculate the heat of fusion and the heat of cooling of water. We can use the following formula to calculate the required heat.

Q = mL

Where:Q is the required heat in BTU.

m is the mass of water in pounds.L is the specific heat of water at the desired temperature.

Lf is the heat of fusion of water.

Lc is the specific heat of ice.

Using the above formula, we get;

Q = mLf + mL + mLc

The heat of fusion of water is 144 BTU/lb

The specific heat of water at 50°C is 1.00 BTU/lb °F.

The specific heat of ice is 0.5 BTU/lb°F.

We know that: 1°C = 1.8°F.

So,50°C = 122°F and -50°C = -58°F

Also, the mass of water is not given, so let us assume that the mass of water is 1 lb.

Thus;

Q = mLf + mL + mLc

Q = 1(144) + 1(1.00)(122-32) + 1(0.5)(-50-0)

Q = 144 + 90 + (-25)

Q = 209 BTU/lb

Therefore, the required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

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The moles would be 12 moles, 4 moles and 11.34 moles

When hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O), the balanced chemical equation is:

2H2 + O2 -> 2H2O

So,

For every 6 moles of H2, 12 moles of H2O will be produced

For every 2 moles of H2, 4 moles of H2O will be produced

For every 5.67 moles of H2, 11.34 moles of H2O will be produced.

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Answer:

Carbon in carbon dioxide gas is taken in by plants for photosynthesis.

Plants turn the carbon atom into a carbohydrate.

An animal eats the plant and uses its carbohydrates for energy.

During respiration, the animal releases carbon dioxide back into the atmosphere.

Explanation:

Answer:

Carbon in carbon dioxide gas is taken in by plants for photosynthesis.

Plants turn the carbon atom into a carbohydrate.

An animal eats the plant and uses its carbohydrates for energy.

During respiration, the animal releases carbon dioxide back into the atmosphere.

Explanation:

Answer:

Metals react by losing electrons.  So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction.

Explanation:

Metals react by losing electrons. So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction. Also, electrons lost by metals transfer to the nonmetals. It is easier for the metals to lose their valance electrons and form cations rather than gaining electrons.

Metals do not hold on to or attract electrons while nonmetals hold on to or attract electrons.

In the periodic table, metals are found towards the left hand side of the table while nonmetals are found towards the right hand side of the table.

Electron affinity of elements increase from left to right across the period. Electron affinity refers to the ability of elements to attract or hold electrons. This ability increase steadily across the period.

Usually, the electron affinity values of nonmetals are very high showing that they easily hold on to and attract electrons while the electron affinity values of metals is very low showing that they do not easily hold on to and attract electrons.

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what did you observe while benzoic acid is melting?

I observed while benzoic acid is melting it bubbling

Answer:

D. 4Al + 3O2→2Al2O3

Answer:

78.75g

Explanation:

The density of diamond is the mass of diamond per unit of its volume. The density of a substance is calculated using the formula:

Density (g/cm^3) = mass (g) / volume (cm^3)

According to the question, the density of diamond= 3.15g/cm^3, volume of diamond= 25cm^3, mass = ?

Hence, to calculate the mass, we say;

Mass = Volume × density

Mass = 25 × 3.15

Mass = 78.75

Therefore, the mass of diamond is 78.75grams.

Answer:

¹/₂₄ dm³ or 0.417 dm³

Explanation:

6.0 M = 6.0 mol/dm³

0.5 M = 0.5 mol/dm³

500 ml = 0.5 dm³

V = volume of 6.0 M solution required (dm³)

Volume × concentration = moles:

0.5 × 0.5 = 0.25

500 ml or 0.5 dm³ of 0.5 M solution contains 0.25 moles of HNO₃

We have 6.0 M solution available, we need 0.25 moles;

Using the formula, we can find the volume of the solution that contains this amount of moles:

6.0 × V = 0.25

V = 0.25/6

V = ¹/₄(¹/₆)

V  = ¹/₂₄

¹/₂₄ dm³ of the 6.0 M solution has the necessary moles of HNO₃ to achieve the desired volume of solution at the desired concentration;

Another liquid (or solution), such as water, without any HNO₃ must be used to make up the total 500 ml or 0.5 dm³, diluting the HNO₃ to the desired concentration:

0.5 - ¹/₂₄ = ¹²/₂₄ - ¹/₂₄

= ¹¹/₂₄

¹/₂₄ dm³ of the 6.0 M solution should be diluted with the ¹¹/₂₄ dm³ of liquid (0 M HNO₃ solution) to produce 0.5 dm³ of 0.5 M solution

Answer:

B. 1 triple bond and 2 single bonds

Explanation:

C2Cl2  has linear structure.

For its Lewis structure, the C2Cl2 molecule has a total of 22 valence electrons. Each Carbon (C) atom has 4 valence electrons and 7 atoms in each chlorine atoms.

So, after pairing in C2Cl2, Chlorine (Cl) form 2 single bonds, one with each carbon atom andboth the Carbon (C) atoms form one triple bond with each other.

Answer:

B

the humidity is the % of water in the air and it is out of 100% of the air. so 10/100 is low

Answer:

B

Explanation:

30%-50% is considered moderate. Anything below 30% is considered dry, anything above 50% is considered high. I hope this helps!

Answer: Neodymium

Explanation: atomic number is the # of protons

look pic for the detail.

The two correct answers for risks involved in both underground mining and surface mining are Ground instability and Respiratory disease.

Ground instability: Both underground mining and surface mining can be susceptible to ground instability, which can lead to cave-ins, landslides, or collapses.

Respiratory disease: Both types of mining can expose workers to dust and harmful particles, which can cause respiratory diseases such as pneumoconiosis (e.g., coal workers' pneumoconiosis) or silicosis.

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The temperature of helium gas confined in a two Litre flask under a pressure of 2.05 atm is approximately 41.11 °C.

The temperature of helium gas confined in a two Litre flask under a pressure of 2.05 atm can be calculated using the Ideal Gas Law. The Ideal Gas Law is expressed as PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the universal gas constant, and T is temperature.

In this case, we know that the pressure is 2.05 atm and the volume is 2 L. We also know that helium is a monoatomic gas with a molar mass of 4 g/mol. We can use the universal gas constant R = 0.0821 L atm/mol K. Plugging in these values, we get:

2.05 atm × 2 L = n × 0.0821 L atm/mol K × T

Dividing both sides by 0.0821 L atm/mol K gives:

n = (2.05 atm × 2 L) / (0.0821 L atm/mol K × T)

Simplifying, n = 50 T / R. We can now solve for T: n = 50 T / R => T = nR / 50

Substituting in the values we have:

n = (2.05 atm × 2 L) / (0.0821 L atm/mol K × 1 mol / 4 g)

= 24.88 molT = (24.88 mol × 0.0821 L atm/mol K) / 50

= 0.04111 K or 41.11 °C.

Therefore, the temperature of helium gas confined in a two Litre flask under a pressure of 2.05 atm is approximately 41.11 °C.

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The bond which is created between the atoms is ionic bond and the product is sodium chloride.

Ionic bond or electrovalent bond is a type of bond which is formed between two elements when there is an exchange of electrons which takes place between  the atoms resulting in the formation of ions.

When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge  and forms an ion called the anion.

As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond.

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Answer:

AlAsO4

Explanation:

Aluminium arsenate is an inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced by the reaction between sodium arsenate and a soluble aluminium salt.

The change in entropy of 3 moles of liquid water if you heat it from 5˚c to 95˚c is  - 14.82  j/k.

Entropy is a scientific concept, as well as a measurable physical belonging, this is maximum commonly associated with a state of sickness, randomness, or uncertainty.

Entropy is honestly a measure of sickness and impacts all elements of our day-by-day lives. In truth, you could think of it as nature's tax. Left unchecked sickness will increase over the years. electricity disperses, and structures dissolve into chaos

The boom of entropy, the dissipation of being counted and strength is going on until our universe will become so infinitely disordered that entropy can now not increase and occasions come to a quit. this is referred to as the warmth dying of the universe.

Calculation:-

S = q(1/T₂ - 1/T₁)

  = 75. 38 (1/95° - 1/5°)

   = - 14.82  j/k.

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