Which diagram best illustrates the stage in the formation of the solar system at which the sun formed?​

8 slices of cheese are required to make 8 ham sandwiches from 16 slices of bread based on the stoichiometry of the reaction.

The balanced equation of the production of ham sandwich is given below:

[tex]2H + C +T+5P+ 2B \rightarrow H_2CTP_5B_2 \\ [/tex]

From the stoichiometry of the reaction, 2 slices of bread and 1 slice of cheese are required to make 1 atm sandwich.

There are 16 slices of bread present to make ham sandwich.

Number of slices of cheese required = 16/2 = 8 slices.

Therefore, 8 slices of cheese are required.

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Answer:

A. A mixture of a solute and a solvent

Explanation:

The composition of the solute dissolved in the solvent to form the solution that is not uniform and same throughout the solution of the mixture is a heterogeneous mixture.

Answer:

B

Explanation:

Like dissolves like. A mixture of polar and no polar liquids wouldn't mix because they are dissimilar. So it would be like water and oil.

Also cuz I just did the quiz and it was right.

To maximize the difference in wavelength for the plant growth experiment, the scientist should use radio waves for the long wavelength and gamma rays for the short wavelength.

The question deals with the investigation of the effects of electromagnetic radiation on plant growth, focusing on the difference in wavelengths of the radiation used. To have the greatest possible difference in wavelength, the scientist should choose radio waves for the very long wavelength and gamma rays for the very short wavelength. Radio waves have the longest wavelengths in the electromagnetic spectrum and carry the least energy, somewhat analogous to making wide waves with a rope using little effort. On the other hand, gamma rays have the shortest wavelengths and carry the most energy, similar to creating short, tight waves in a rope which requires significantly more energy.

Explanation:

the convection currents in the oven produced by the heat, cooks both the bottom and the top at the same rate.

Answer:

Explanation:

The air is heated by the heat source in the oven. The hot air rises, surrounds the bread, and heats the bread on all sides.

Answer:

They will share electrons .

Explanation:

When P and O2 reacts, they will share electrons as both of the elements are non-metals.

Only metal elements such as K , Na , Ca , etc. can transfer electrons to the other non-metal elements.

Answer: The temperature of the heated gas is 357 K

Explanation:

To calculate the final temperature of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

[tex]\frac{P_1}{T_1}=\frac{P_2}{T_2}[/tex]

where,

[tex]P_1\text{ and }T_1[/tex] are the initial pressure and temperature of the gas.

[tex]P_2\text{ and }T_2[/tex] are the final pressure and temperature of the gas.

We are given:

[tex]P_1=8.53atm\\T_1=293K\\P_2=10.4atm\\T_2=?[/tex]

Putting values in above equation, we get:

[tex]\frac{8.53}{293K}=\frac{10.4}{T_2}\\\\T_2=357K[/tex]

Hence, the temperature of the heated gas is 357 K

Answer:

D

Explanation:

because macroscopic is visible to the naked eye.

Answer: The moles of gas are in the container are 0.08

Explanation:

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = 1.0 atm

V = Volume of gas = 2.0 L

n = number of moles = ?

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]300K[/tex]

[tex]n=\frac{PV}{RT}[/tex]

[tex]n=\frac{1.0atm\times 2.0L}{0.0821L atm/K mol\times 300K}=0.08moles[/tex]

Thus the moles of gas are in the container are 0.08

Answer:

its sunspots :)

Explanation:

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for my rank

Answer:

a.)  

To warm the liquid from 35°C to 78°C:

(2.3 J/g-K) x (42.0 g) x (78 - 35) = 4154 J

To vaporize the liquid at 78°C:

(38.56 kJ/mol) x (42.0 g C2H5OH / 46.06867 g C2H5OH/mol) = 35.154 kJ

Total:

4.154 kJ + 35.154 kJ = 39.3 kJ

b.)  

To warm the solid from -155°C to -114°C:

(0.97 J/g-K) x (42.0 g) x (-114°C - (-155°C)) = 1670 J

To melt the solid at -114°C:

(5.02 kJ/mol) x (42.0 g C2H5OH / 46.06867 g C2H5OH/mol) = 4.5766 kJ  

To warm the liquid from -114°C to 78°C:

(2.3 J/g-K) x (42.0 g) x (78 - (-114)) = 18547 J

To vaporize the liquid at 78°C:

35.154 kJ  (as in part a.)

Total:

1.670 kJ + 4.5766 kJ + 18.547 kJ + 35.154 kJ = 59.9 kJ

Explanation:

 1021.27 J heat is required to heat 9.61g of ethanol from 24.1⁰C to 67.3⁰C

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.

It is given by the formula -

                                                  Q = mcΔT

where, Q = amount of heat

m = mass

c = specific heat

ΔT = Change in temperature

Given,

Mass of ethanol = 9.61g

Initial temperature = 24.1⁰C

Final temperature = 67.3⁰C

Q = mcΔ T

        = 9.61 × 2.46 × ( 67.3 - 24.1)

         = 1021.27 J

Therefore,  1021.27 J heat is required to heat 9.61g of ethanol from 24.1⁰C to 67.3⁰C

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All the foursingle neutron /proton in the image coming out of the chain reactions and bombarding are responsible of producing a chain reaction.

It is the change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle.

The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion.

In the given image of a nuclear reaction the objects which could hit other atoms, producing a chain reaction are all the four single neutron /proton coming out of the chain reactions and bombarding.

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Answer:

Picture of model of a nuclear reaction attached.

Explanation:

Answer:

Since we can't utilize charges to make sense of what number of every particle we have (as we did with ionic mixes), we need to determine with prefixes mono-, di-, tri-, tetra, penta-, hexa-,, etc.

Answer:

When there is an increased number of sun spots, it means the surface temperature is decreased which will decrease the temperature of the Earth's surface as well.

Explanation:

Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Sunspots usually appear in pairs of opposite magnetic polarity.

Answer:

A i took the test

Explanation:

good luck ;)

The term "electromagnetic" refers to the electrical and magnetic forces and effects that an electric current produces. Ultraviolet waves electromagnetic waves has the highest energy.

The interactions between an electric field as well as a magnetic field produce waves known as electromagnetic waves, or EM waves. In other words, magnetic and electric fields oscillation to produce electromagnetic (EM) waves.

Radio and television waves, microwaves, infrared rays, visible light, ultraviolet light, X-rays, and gamma rays are all examples of electromagnetic waves that propagate across space independently of matter.

An changing magnetic field will cause an altering electric field, and vice versa. Electromagnetic waves are created from these shifting fields. In contrast to mechanical waves, electromagnetic waves may travel without a medium.

Thus, option A is correct.

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Answer:

True

Explanation:

Protons are located in the nucleus of the atom along with neutrons, have a positive charge, and a mass of 1.673 x [tex]10^{-27}[/tex] kg.

The statement is true. Inside heat tends to escape from a house on a cold winter day, primarily through the poorly insulated parts like windows and doors. The principle of heat transfer, specifically conduction, explains this phenomenon.

The statement is True. On a cold winter day, the heat from inside a house tends to move to the colder outside environment, and this flow of heat usually occurs predominantly through the windows and doors if they are not properly insulated. This phenomenon is explained by the principle of heat transfer, specifically the mechanism called conduction, where thermal energy is transferred from a hotter object to a colder one.

Windows, particularly those that are single-pane, are usually not very good insulators, so they can allow a significant amount of heat to escape. This is why in cold climates, it's common to use double-pane or even triple-pane windows, which have air or another insulating material between the panes to reduce heat loss.

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Answer:

C.11

Explanation:

Boron-11 makes up around 80% of all natural Boron. And, typically, the quickest way to determine the most abundant isotope of an element is to just round the atomic mass to the nearest whole number.

Answer  The body also needs calcium for muscles to move and for nerves to carry messages between the brain and every body part. In addition, calcium is used to help blood vessels move blood throughout the body and to help release hormones and enzymes that affect almost every function in the human body

Explanation:

Answer:

Calcium is a mineral for humans which is really important.It helps you be healthy and be in shape(mostly your teeth and your bones).Calcium also keeps your blood and muscles moving and helps your nerves send messages from your brain to the rest of your body.Calcium helps you a lot and is essential to your life.

Hope that was helpful.Thank you!!!

Answer:

427.50

Explanation:

The question requests for the missing particle in a nuclear reaction involving the Potassium isotope. Unfortunately, the reaction is incomplete. Nonetheless, the conservation laws of atomic number and atomic mass would be employed to find the missing particle if the equation was complete.

In this nuclear reaction, both the atomic number and the atomic mass must be conserved. For atomic numbers (proton numbers), you add the atomic numbers on one side of the equation and set it equal to the sum of atomic numbers on the other side. The same thing applies to atomic mass (proton + neutron numbers). However, the nuclear reaction is not complete.

This question is seeking to determine the missing particle in this nuclear reaction involving potassium (K). The missing part of the nuclear equation would help us determine the product particles after a certain type of nuclear decay. Unfortunately, the reaction is not completely given, if it were we could utilize conservation laws to identify the missing particle.

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Answer:

more observations could help resolve differences in the scientists explanations

Explanation:

Making additional observations is crucial when scientists have differing explanations for an observation. More observations provide more data points, increasing the validity of their findings, and can help resolve differences by giving a more comprehensive understanding of the situation.

When two scientists make differing explanations about an observation, making more observations is necessary to better understand the event or phenomenon under investigation. Additional observations provide more data points, which add validity to their findings and may lead to a consensus if they consistently show a particular trend. Through additional observations, they can eliminate potential biases or errors that may have occurred in their initial observation. Consequently, more observations might help in resolving differences in the scientists' explanations due to a better, more comprehensive understanding of the observation with varied perspectives.

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Answer:

1,3,4

Explanation:

just took the test

The three statements that accurately describe the roles of decomposers in the carbon cycle are:

DECOMPOSERS:

Decomposers perform the following functions as it relates to the carbon cycle:

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When you dissolve acid in water  positive hydronium ions are released. Therefore, the correct option is option A.

Any material that when dissolved in water has an acidic taste, may alter the color of some indicators (such as reddening blue litmus paper), can react with some metals (such as iron) to release hydrogen, can combine with bases to produce salts, and can accelerate some chemical changes (acid catalysis).

Acids are examples of both organic chemicals that belong towards the carboxyl group, sulfonic acid, as well as phenol groups as well as the inorganic substances referred as the mineral acids, such as sulfuric, nitric, hydrochloric, as well as phosphoric acids. When you dissolve acid in water positive hydronium ions are released.

Therefore, the correct option is option A.

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Answer:

mg

Explanation:

The type of solution you have if you dissolved 60g of NaHSO[tex]_4[/tex] in 100g of 60°C water is unsaturated.

A solute is dissolved in a solvent to form a solution. We refer to the final mixture as a solution. There is an absolute maximum of solute that can be dissolved in a given solvent at any given pressure and temperature for the solute to stay dissolved inside the solution phase.

Unsaturated solutions have the ability to dissolve more solutes than saturated ones. Since these solutions have not yet reached saturation, a precipitate just at bottom would never be present. From a distance, a solution that is nearly saturated and one that is not would resemble one another. The type of solution you have if you dissolved 60g of NaHSO[tex]_4[/tex] in 100g of 60°C water is unsaturated.

Therefore, the type of solution you have if you dissolved 60g of NaHSO[tex]_4[/tex] in 100g of 60°C water is unsaturated.

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Answer:

Oxygen

Explanation:

Water's formula is H20. Which is two hydrogen and one oxygen.