Claire made the diagram above to show how the puddle she saw on the way to school disappeared
by the end of the day. She wanted to show her idea that heat from the sun caused the water to
evaporate into the air. However, Claire's diagram is incomplete.
Think about what's missing. What would you add to the diagram to better show Claire's idea?

In dynamic equilibrium conditions, the vapor pressure is unique, and the rate of vaporization and condensation are at equal rates. Thus, option b is accurate.

A dynamic equilibrium is a reaction state where the rate of the forward and the backward reaction are equal. In the above case, the vapourization and the condensation will occur simultaneously at the same rate.

The vapor pressure of the liquid to gas and vice versa has a distinctive value as the temperatures are different making the pressure change directly.

Therefore, option b. II and III are the correct options.

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Answer:

pH = 3.73

Explanation:

Let's apply the Hendersson Hasselbah equation

pH = pKa + log [salt / acid]

HNO₂ → pKa = 3.16

Concentration of salt and acid must be M

Let's determine molarity of salt

5.80 g . 1 mol /68.99 g = 0.0840 moles of sodium nitrite

0.0840 mol / 0.150L of solution = 0.56 M

pH = 3.16 + log (0.56/0.15)

pH = 3.73

Water molecules are highly packed and are always near each other.

The correct way to balance the equation is:

4 Fe plus 3 O₂ rightwards arrow 2 Fe₂O₃

This is because the equation must follow the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Therefore, the number of atoms of each element must be the same on both sides of the equation.

To balance this equation, we start by counting the number of atoms of each element on both sides. We can see that there are 4 Fe atoms and 3 O₂ molecules on the left side, but only 2 Fe₂O₃ molecules on the right side. To balance the Fe atoms, we put a coefficient of 2 in front of Fe₂O₃, giving us 4 Fe atoms on both sides. But now we have 6 O atoms on the right side and only 3 on the left, so we need to add a coefficient of 3/2 in front of O₂ to give us 6 O atoms on both sides. This gives us the balanced equation:

4 Fe + 3 O₂ rightwards arrow 2 Fe₂O₃

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Answer:

Calculate the frequency of light having wavelength of 456 nm.

1.22*10^8nm

Explanation:

In the given question, \(6.58 \times 10^{14}\) Hz is the frequency of the light with a wavelength of 456 nm.

Frequency is a measure of the number of cycles of a periodic wave that occur per unit of time.

The frequency of light can be calculated using the following equation:

frequency = speed of light / wavelength

where the speed of light is a constant equal to \(\rm 3 \times 10^8 \ m/s\).

To use this equation, we need to convert the wavelength from nanometers to meters:

456 nm = \(\rm 456 \times 10^{-9}\ m\)

Now, we can substitute the values into the equation:

frequency =  \(\rm 3 \times 10^8 \ m/s\) / \(\rm 456 \times 10^{-9}\ m\)

=  \(6.58 \times 10^{14}\) Hz

Therefore, the frequency of light with a wavelength of 456 nm is  \(6.58 \times 10^{14}\) Hz.

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Answer:

Weathering ➡️ Erosion ➡️ Deposition ➡️ Compaction ➡️ Cementation

Explanation:

The processes of sedimentary rock formation involves:

1. Weathering: The preexisting rocks are weathered through abrasion caused by sand-blasting and other weathering processes. This breaks down the rocks into smaller pieces.

2. Erosion: Erosion acts as an agent of transportation of the weathered products. The sediments that are weathered are transported through erosion. The flowing or flooding water carries them to where they are deposited.

3. Deposition: The weathered materials are eroded and deposited layer upon layer. This happens when there is nothing that can move them away again.

4. Compaction: The sedimentation continues as the deposited sediments become increasingly overburden. They begin to compact together and closing down pore spaces.

5. Cementation: The dissolved minerals begin to form mineral crusts through precipitation or crystallization. This gradually cements the sediments to form a rock.

Answer:

weathering, erosion, deposition, cementation, conpaction

Answer:

I will choose Happiness, Happiness, Happiness, Happiness.....

☺️❤️

Explanation:

Why Happiness Matters

It's the feeling of truly enjoying your life, and the desire to make the very best of it. Happiness is the "secret sauce" that can help us be and do our best. Here's what researchers found when they studied happy people: Happy people are more successful.

Scientific evidence suggests that being happy may have major benefits for your health. For starters, being happy promotes a healthy lifestyle. It may also help combat stress, boost your immune system, protect your heart and reduce pain. What's more, it may even increase your life expectancy.

The balanced chemical equation for the combustion of propane with oxygen is: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

To balance the equation, first balance the carbon atoms on both sides of the equation. There are three carbon atoms in the propane molecule and three in the carbon dioxide molecule, so balance the carbon atoms by putting a coefficient of 3 in front of the CO₂ molecule.

C3H8 + 5O2 → 3CO₂

Next, balance the hydrogen atoms. There are eight hydrogen atoms in the propane molecule and four in the water molecule, so balance the hydrogen atoms by putting a coefficient of 4 in front of the H₂O molecule.

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Finally, balance the oxygen atoms. There are five oxygen atoms on the left side and 10 on the right side, so balance the oxygen atoms by putting a coefficient of 5 in front of the O₂ molecule.

Therefore, the correct whole number coefficient for propane, C3H8, is 1.

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Answer:

Discussion of calcium is often paired with magnesium, and for good reason. As neighbors on the periodic table, they have similar chemical properties and behave similarly in a number of chemical reactions.

Explanation:

Answer:

They both have two valence electrons.

Explanation:

Just took the quiz :)

Answer:

\(Q=210.8kJ\)

Explanation:

Hello!

In this case, since the heat of vaporization is related with the energy required by a substance to undergo the phase transition from liquid to gas, we can compute such amount of energy as shown below:

\(Q=m\Delta H_{vap}\)

In such a way, since the enthalpy of vaporization is given as well as the mass, we compute the energy as shown below:

\(Q=155g*1360J/g\\\\Q=210.8kJ\)

Best regards!

Answer:

Deeper water, where too little sunlight penetrates for photosynthesis, is called the aphotic zone. Surface water dissolves oxygen from the air, so there is generally plenty of oxygen in the photic zone to support organisms. Water near shore usually contains more dissolved nutrients than water farther from the shore

Explanation:

There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).

The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.

Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.

Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.

In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.

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The radioactive substance which she is most likely measuring is cobalt-60

The correct answer choice is c

From the analysis given, this means that Juliet is measuring cobalt-60 as it was decreasing in mass from 200g to 50g. In addition to this, it is a synthetic radioactive material.

Radioactive substances are those substances which undergoes radioactive decay. That is, the nucleus of these materials changes from an unstable to stable form by disintegrating.

However, these substances usually, frequently and most of the time used for diagnosis and also treatment of diseases. They are also used to study certain structures in the thebody.

So therefore, the radioactive substance which she is most likely measuring is cobalt-60. The correct answer choice is c

Complete question:

Juliet started working with a radioactive substance. In 1997, she started with 200 g. When she measured again in 2002, she had 100 g left. In 2007, she had 50 g. Which substance is she most likely measuring?

A. rubidium-91

B. iodine-131

C. cobalt-60

D. carbon-14

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To determine the empirical formula of the metal bromide formed, we need to first calculate the amount of chromium reacted and the amount of bromine reacted. The amount of chromium reacted can be calculated using its molar mass, which is 52 g/mol: 19.66 g chromium x (1 mol chromium / 52 g chromium) = 0.378 mol chromium.

Since there is excess bromine, all of the chromium would react with bromine to form the metal bromide. Therefore, the amount of bromine reacted can be calculated using the mass of the metal bromide formed:

110.3 g metal bromide x (1 mol metal bromide / molar mass of metal bromide) = amount of bromine reacted

We don't know the molar mass of the metal bromide yet, but we can use the law of conservation of mass to determine it. The mass of the metal bromide formed must equal the sum of the masses of the chromium and bromine that reacted.

110.3 g metal bromide = 19.66 g chromium + mass of bromine reacted mass of bromine reacted = 90.64 g

Now we can calculate the amount of bromine reacted:

90.64 g bromine x (1 mol bromine / 79.904 g bromine) = 1.133 mol bromine

To determine the empirical formula, we need to find the ratio of the moles of each element in the metal bromide.

Chromium: 0.378 mol
Bromine: 1.133 mol

To get a whole number ratio, we can divide both of these values by the smaller value (0.378 mol):

Chromium: 0.378 mol ÷ 0.378 mol = 1
Bromine: 1.133 mol ÷ 0.378 mol = 3

Therefore, the empirical formula of the metal bromide is CrBr3.

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Answer:

The combustion of hexane (C6H14) is represented in the balanced equation : 2 C6H14 + 19 O --- 12 CO2 + 14 H2O MM hexane 86.18 g/mole, O2 32 g/mole, CO2 44 g/ mole, H2O 18 g/mole A. If 45 g of hexane is reacted and 45 g of water is recovered.

Explanation:

The products of this reaction is 2C₆H₁₄ + 19O₂ = 12CO₂ + 14H₂O is carbon dioxide and water.

Combustion is  the process where a substance burns in the presence of oxygen, giving off heat and light in the process. The hydrocarbons burn in the presence of oxygen giving carbon dioxide and water along with release of energy and thus the process is exothermic.

Combustion is a high-temperature exothermic (heat releasing) redox (oxygen adding) chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

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Volume of the balloon at 2.00 × 10⁴ m is 1.52x10³ L

Volume is the three dimensional qualities that is used to measure capacity of solid shape and atmospheric pressure is the air around you has weight and it weighs down everything it touches is called atmospheric pressure

Here given data is

Pi = 1.0 atmosphere = absolute atmospheric pressure

P f = 61.0 mm Hg = atmospheric pressure

= 61.0/760 atmosphere

=  0.0802 atmosphere

Vi =  171 L

T i = 20.0°C = 20+273 = 293 K

T f = 210 K

We have to find volume of the balloon at 2.00 ×10⁴ m =?

Then the formula is

Pi × Vi/T i = P f × V f/T f

1 atm×171 L/293 K = 0.0802× V f/210K

V f = 1.52x10³ L

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Answer:

Surface area

Explanation:

psi =  pound square inch

Often expres in psi, pressure s the term for force per unit of surface area.

Answer:

I think the answer is B. Carbon atom but I'm not 100% sure. Sorry if it's incorrect.

Answer:

what is the question is it

Answer:

The CCl4 gas would need to be heated to -178.7 °C to have a volume of 2.00 liters at 250 °C.

Step-by-step explanation:

First, we need to calculate the number of moles of CCl4:

\(\sf:\implies n = \dfrac{m}{M}\)

\(\sf:\implies n = \dfrac{75.0\: g}{154.0\: g/mol}\)

\(\sf:\implies n = 0.487\: moles\)

Next, we can use the ideal gas law to solve for the temperature:

\(\sf\qquad\dashrightarrow PV = nRT\)

where:

We need to convert the given temperature of 250 °C to Kelvin:

\(\sf:\implies T = 250 ^{\circ}C + 273.15\)

\(\sf:\implies T = 523.15\: K\)

Now we can plug in the values and solve for T:

\(\sf:\implies (1\: atm)(2.00\: L) = (0.487\: mol)(0.08206\: L\cdot atm/mol\cdot K)T\)

\(\sf:\implies T = \dfrac{(1\: atm)(2.00\: L)}{(0.487\: mol)(0.08206\: L\cdot atm/mol\cdot K)}\)

\(\sf:\implies T = 94.5\: K\)

Finally, we need to convert the temperature back to Celsius:

\(\sf:\implies T = 94.5\: K - 273.15\)

\(\sf:\implies \boxed{\bold{\:\:T = -178.7 ^{\circ}C\:\:}}\:\:\:\green{\checkmark}\)

Therefore, the CCl4 gas would need to be heated to -178.7 °C to have a volume of 2.00 liters at 250 °C.

Greetings! ZenZebra at your service, hope it helps! <33

The temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K .

The temperature of a given gas can be calculated using the ideal gas law equation:

PV = nRT

Where;

1.4948 × 92.202 = 1.7379 × 0.0821 × T

137.82 = 0.142T

T = 137.82 ÷ 0.142

T = 965.69K

Therefore, the temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K.

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Answer:

Tetrahedral molecules are normally spy hybridized.

Explanation:

Like charges repel each other, while opposite charges attract each other. This principle is one of the fundamental aspects of electrostatics. According to Coulomb's law, the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

As the distance between two charged particles decreases, the force between them increases. This is because the closer the particles are, the stronger the electric field they create, leading to a stronger force of interaction.

On the other hand, as the magnitude of the charges decreases, the force between the particles also decreases. This is because the force is directly proportional to the product of the charges. If one or both of the charges are smaller, the force they exert on each other will be weaker.

In summary, according to Coulomb's law, decreasing the distance between charged particles increases the force between them, while decreasing the magnitude of the charges decreases the force. This understanding of the relationship between charge, distance, and force is crucial in explaining the behavior of charged particles and the interactions between them.

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Answer:

A .    \(\mathbf{W = 7133.2 \dfrac{ft. lb_f}{min} }\)

B.   \(\mathbf{W = 4245.24 \dfrac{ft. lb_f}{min} }\)

C.  The system is at steady state but not at equilibrium

Explanation:

Given that:

The volumetric flow rate of the water = 15 gallons per minute

The diameter of the pipe that leaves the pump is 1 inch.

A. The objective here is  to determine how much work flow is done by the water as it leaves the pump and enters the pipe

The work flow that is said to be done can  be expressed by the relation :

W = P × V

where;

P = pressure

V = volume

Also the given outlet pressure is the gauge pressure

The pressure in the pump P  is can now be expressed by the relation:

\(P_{absolute} = P_{guage} + P_{atmospheric}\)

\(P_{absolute}\) =  10 psig + 14.7 psig

\(P_{absolute}\) =  24.7 psig

W =  P × V

W =  24.7 psig  ×  15 gal/min

\(W = (24.7 \ psig * \dfrac{\frac{lb_f}{in^2}}{psig}) * ( 15 \frac{gal}{min}* \dfrac{0.1337 \ ft^3}{1 \ gal }* \dfrac{144 \ in^2}{1 \ ft^2})\)

\(\mathbf{W = 7133.2 \dfrac{ft. lb_f}{min} }\)

Thus ; the rate of flow of work is said to be done by the water at \(\mathbf{W = 7133.2 \dfrac{ft. lb_f}{min} }\)

B.

Given that :

The water returns to the pool through an opening that is 1.5 inches in diameter.

where the pressure is 1 atm.

Then ; the rate of work done  by the water as it leaves the pipe and enter the pool is as follows:

W =  P × V

W = 1 atm  ×  15 gal/min

\(W = 1 \ atm * ( 15 \frac{gal}{min}* \dfrac{0.1337 \ ft^3}{1 \ gal }* \dfrac{144 \ in^2}{1 \ ft^2})\)

\(\mathbf{W = 4245.24 \dfrac{ft. lb_f}{min} }\)

Thus ; the rate of flow of work done by the water leaving the pipe and enters into the pool is  at \(\mathbf{W = 4245.24 \dfrac{ft. lb_f}{min} }\)

C.

We can consider the system to be at steady state due to the fact that; the data given for the flow rate and pressure doesn't reflect upon the change in time in the space between the pump and the pool.

On the other-hand the integral factor why the system is not at equilibrium is that :

the pressure leaving the pipe is different from that of the water at the surface of the pool as stated in the question.

Answer:

0.060 g

Explanation:

Hydrogen gas is made up of 2 atoms of hydrogen \(H_2(g)\).

From the formula for calculating mole:

mole = mass/molar mass

Molar mass of hydrogen gas = 2.016 g/mol

Hence, 0.030 mole hydrogen gas would weigh:

mass = molar mass x mole

              =  2.016 x 0.030

                = 0.06048 g

The mass of hydrogen gas that participated to the correct number of significant digits is, therefore, 0.060 g

Answer:

240 quarts

i think

Explanation:

Don't quote me on that lol

A major purchase refers to a high-cost item or service that is considered a significant investment for an individual or household, such as a car, home, or college education. Major purchases usually involve a large sum of money and require careful planning and consideration before a final decision is made.

Any item that a person or a household buys for their own use or consumption is called a consumer good. Durable and non-durable goods are two types of consumer goods that can be classified. Consumer goods are tangible items that people or households buy for their own use or consumption.

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Your question is incomplete, most probably the complete question is:

The difference between Major purchase and Consumer good​?