Which of the following is true about Earth's tectonic plates? Question 13 options: They fit closely together with each plate touching all the plates surrounding it They all move in the same direction and at the same speed They are separated by oceans They move due to earthquakes and the flow of lava

Answer:

1. Crush the sugar into powder.

2. Heat the water.

3. Dissolve it by stirring continuously

Explanation:

1. Crushing the sugar into powder increases surface area. So it increases the changes of dissolving

2. Heating the water increases the capacity of water to dissolve sugar.

3. Stirring continuously increases randomness of particles so eases mixing up thus increasing dissolving tendency.

For a neutralization reaction, more heat is evolved and Q is doubled.

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The false statement among the given options is: "All gases are colorless and odorless at room temperature."

While many gases may indeed be colorless and odorless at room temperature, there are exceptions. Some gases, such as chlorine (Cl₂) and sulfur dioxide (SO₂), have distinct colors and odors. Chlorine gas has a yellow-green color and a distinct odor, while sulfur dioxide gas has a pungent, suffocating odor.

Gases are highly compressible. Non-reacting gas mixtures are homogeneous.Gases expand spontaneously to fill the container they are placed in. Distances between molecules of gas are very large compared to bond distances within molecules.

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The molecular formula for the compound is \(N_{2}H_{4}\).

The empirical formula gives you the simplest whole-number ratio of atoms in a molecule or compound. The molecular formula gives you the actual number of atoms of each element in a molecule or compound.

To determine the molecular formula of a compound with the empirical formula  \(NH_{2}\) and a molar mass of 32.05 g/mol, follow these steps:

1. Calculate the molar mass of the empirical formula  \(NH_{2}\):
  - Molar mass of Nitrogen (N) = 14.01 g/mol
  - Molar mass of Hydrogen (H) = 1.01 g/mol
  - Molar mass of  \(NH_{2}\) = (1 x 14.01) + (2 x 1.01) = 16.03 g/mol

2. Divide the given molar mass (32.05 g/mol) by the molar mass of the empirical formula (16.03 g/mol):
  - Ratio = 32.05 g/mol / 16.03 g/mol ≈ 2

3. Multiply the empirical formula by the ratio to get the molecular formula:
  - Molecular formula = \(NH_{2}\) * 2 = \(N_{2}H_{4}\).

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Answer:

is there a picture you could add?

Explanation:

Molality of a solution is defined as the number of moles of solute per kilogram of solvent. The formula for molality is given by the following equation:molality (m) = moles of solute / mass of solvent (in kg)In order to calculate the molality of a 12 percent urea solution, we need to first determine the mass of urea present in the solution.

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The photon that carries more energy is the blue photon, and it carries around 50% more energy than the average orange photon (590-620 nm). The law used to solve the previous problem suggests that energy is proportional to the frequency of an electromagnetic wave. Thus, the higher the frequency, the higher the energy. The correct option is C.

In electromagnetic radiation, the energy carried by each photon is directly proportional to the frequency and inversely proportional to the wavelength. Thus, higher frequency photons carry more energy than lower frequency photons.

A photon's energy is directly proportional to its frequency and inversely proportional to its wavelength. Thus, higher frequency photons, such as blue photons, carry more energy than lower frequency photons, such as orange photons. The energy of a photon is given by the equation: E = hf

Where E is energy, h is Planck's constant (6.63 x 10⁻³⁴ J s), and f is frequency.

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The technical machinist should build a cubical steel tank with a smallest possible inside length of 0.65 meters in order to hold 280 liters of water.

To calculate the smallest possible inside length of the cubical steel tank, we need to determine the dimensions of the tank based on its volume and the fact that it is a cube.

Given that the tank needs to hold 280 liters of water, we can convert this volume to cubic meters by dividing by 1000. So, the volume of the tank is 280/1000 = 0.28 cubic meters.

Since the tank is a cube, all sides have the same length. Let's call this length "x". Therefore, the volume of the tank can be expressed as x * x * x = x^3.

Now we can set up the equation x^3 = 0.28 and solve for x. Taking the cube root of both sides, we find x = ∛0.28.

Using a calculator, we can find the cube root of 0.28 to be approximately 0.648. This gives us the length of one side of the cube.

Rounding this value to the nearest 0.01 meter, the smallest possible inside length of the tank is 0.65 meters.

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Answer:

Oxygen, 15.9994

Explanation:

Use the dominant isotope

Answer: 215.0%

Explanation:

IT IS NOT A

the full moon is incorrect I just don know the right answer sorry

Answer:

your answer is (The fluid that passes through filter paper during filtration)

‘Chromatography’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components, so that the individual components can be thoroughly analyzed. There are many types of chromatography e.g., liquid chromatography, gas chromatography, ion-exchange chromatography, affinity chromatography, but all of these employ the same basic principles.

Chromatography is a separation technique that every organic chemist and biochemist is familiar with. I, myself, being an organic chemist, have routinely carried out chromatographic separations of a variety of mixture of compounds in the lab. In fact, I was leafing through my research slides and came across a pictorial representation of an actual chromatographic separation that I had carried out in the lab. I guess that picture would be a good starting point for this tutorial!

Let me first explain what I was trying to do here. I had two reactants ‘A’ and ‘B’. I let them react with each other, under certain reaction conditions, to form a product ‘C’. After the reaction was complete, I ended up with a reaction mixture that contained unreacted A, unreacted B and my desired product C. Now my task was to separate out A, B and C to isolate and analyze pure product C.

Answer:

D

Explanation:

Everything in this world is made up of particles of matter

Answer:

Liquid

Explanation:

We can rule out solids when there is no definite shape, so we have liquid and gas left. The thing is gas doesn't have a definite volume because we can't transfer it between two glass cups (this is an example). Thus, liquid is the state of matter in which a material has a definite volume but not a definite shape.

if 25.4 g of LiOH reacts with 64.8 g of CO2, 9.54 g of H2O will be produced.

We can start by using the coefficients in the balanced equation to convert the number of moles of one substance to the number of moles of another substance.

Convert the masses of LiOH and CO2 to moles:

Determine the limiting reactant:

Since the ratio of the coefficients in the balanced equation is 2:1 for LiOH to CO2, we can see that the limiting reactant is LiOH. This means that we will run out of LiOH before CO2, so we will use the moles of LiOH to calculate the amount of H2O produced.

Calculate the number of moles of H2O produced using the balanced equation:

From the balanced equation, for every 2 moles of LiOH that react, 1 mole of H2O is produced. So, the number of moles of H2O produced is:

1.06 mol LiOH / 2 mol LiOH/mol H2O = 0.53 mol H2O

Convert the number of moles of H2O to mass:

Mass of H2O = 0.53 mol * (18.0 g/mol) = 9.54 g

So, if 25.4 g of LiOH reacts with 64.8 g of CO2, 9.54 g of H2O will be produced.

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Answer: a. BaO

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here element barium is having an oxidation state of +2 called as \(Ba^{2+}\) cation and \(O^{2-}\) is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral \(BaO\)

Answer:

Bohr Model

Explanation:

Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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Hey there mate ;)

Question: Write ionic equation

. HCl(aq) + KOH(aq) → KCl(aq) + H2O(l)

Answer:-

The ionic equation is-

K+ + OH- + H+ + Cl- = H2O + K+ + Cl-

Reflecting telescopes are preferred for scientific research because they are better suited for gathering large amounts of light and producing high-quality images. However, refracting telescopes are still popular for amateur astronomers and for viewing objects on Earth.

Reflecting telescopes are different from refracting telescopes because reflecting telescopes use mirrors, whereas refracting telescopes use lenses. The reflecting telescope was invented in 1668 by Sir Isaac Newton, and it has since become one of the most popular types of telescopes.
Reflecting telescopes use a mirror to gather and focus light, while refracting telescopes use a lens to do the same thing. Reflecting telescopes can be made much larger than refracting telescopes because it is easier to make large mirrors than it is to make large lenses. The mirror in a reflecting telescope is placed at the back of the telescope, and it gathers and reflects light back to a secondary mirror, which then reflects the light to the eyepiece. The eyepiece is where the observer looks through the telescope.In contrast, the lens in a refracting telescope is placed at the front of the telescope, and it gathers and bends light as it passes through. The lens focuses the light onto an eyepiece at the back of the telescope. Refracting telescopes are generally smaller than reflecting telescopes because of the difficulty of making large lenses.
Another difference between reflecting and refracting telescopes is the way they are constructed. Reflecting telescopes have a simple tube that houses the mirrors and eyepiece, while refracting telescopes have a more complex design with a long tube that contains the lens and eyepiece.

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The population of bacteria is indeed a function of the number of days. However, it is not a linear function.

In a linear function, the relationship between the independent variable (number of days) and the dependent variable (population of bacteria) would result in a constant rate of change. This means that for each additional day, the population would increase or decrease by a consistent amount. In other words, the ratio of the change in population to the change in days would remain the same.

In this case, the population of bacteria is not increasing or decreasing by a constant rate. Instead, it is tripling each day. This means that the ratio of the change in population to the change in days is not constant. For example, from day 1 to day 2, the population increases by a factor of 3 (from 1 to 3), and from day 2 to day 3, it again increases by a factor of 3 (from 3 to 9). This exponential growth pattern suggests a non-linear relationship between the number of days and the population of bacteria.

Therefore, the population of bacteria is a function of the number of days, but it is not a linear function. It exhibits exponential growth as the population triples each day.

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The animal that would be classified in the phylum Chordata is the Tick. The correct answer is option Tick.

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Answer:

Did you just let your cat walk on your keyboard? XD

Could you explain this a bit better please?

I'll answer the question in the replies of this comment if you can give me a bit more information.

Explanation:

May I have brainliest please? :)

The rate determining step in a reaction is the slowest step in the reaction.

Thee term rate determining step is used to describe the slowest step in a reaction. This reaction determines the overall rate of the entire reaction.

Hence, in this case, the rate determining step in a reaction is the slowest step in the reaction.

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Answer:

I don't know about the rest but A is heptane

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer:

8.7min

Explanation:

The epicenter is the origin of an earthquake wave.

Since the distance between the earthquake origin and the station is 7000km and we are told to find the time after which the s - wave arrives from that of the p- waves, we follow the procedure below:

So;

  The time difference  = 19min  - 10.3min  = 8.7min

After the p-waves arrived, it took the s-waves  8.7min to reach the station.

Answer:

8.7min

Explanation:

The epicenter is the origin of an earthquake wave.

Since the distance between the earthquake origin and the station is 7000km and we are told to find the time after which the s - wave arrives from that of the p- waves, we follow the procedure below:

we use the graph of the travel time  - distance given

trace the 7000km as the distance and find where it cuts the p-wave curve.

the point is 10.3min

trace it up to where 7000km intersects the s-wave curve which is at 19min

So;

 The time difference  = 19min  - 10.3min  = 8.7min

After the p-waves arrived, it took the s-waves  8.7min to reach the station.

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The molarity of the diluted solution is 1.67 M.

To find the molarity of the diluted solution, we need to calculate the amount of copper nitrate present in the initial solution and the final volume of the diluted solution. By dividing the amount of copper nitrate by the final volume, we can determine the molarity of the diluted solution.

First, calculate the amount of copper nitrate in the initial solution:

Amount of copper nitrate = volume of solution × molarity

Amount of copper nitrate = 0.750 L × 4.00 mol/L = 3.00 mol

Next, calculate the molarity of the diluted solution:

Molarity = amount of copper nitrate / final volume of solution

Molarity = 3.00 mol / 1.80 L = 1.67 M

To find the molarity of the diluted solution, we utilize the equation Molarity = moles of solute / volume of solution. In this case, the solute is copper nitrate (Cu(NO3)2), and the volume of the solution is given as 0.750 L.

We first calculate the amount of copper nitrate in the initial solution by multiplying the volume of the solution by the molarity: 0.750 L × 4.00 mol/L = 3.00 mol. This gives us the amount of copper nitrate present before dilution.

Next, we need to determine the final volume of the solution after dilution, which is given as 1.80 L.

Finally, we calculate the molarity of the diluted solution by dividing the amount of copper nitrate (3.00 mol) by the final volume (1.80 L): 3.00 mol / 1.80 L = 1.67 M. Therefore, the molarity of the diluted solution is 1.67 M.

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The percent error was relatively high in this lab. There were several factors that may have caused this error. The transfer of heat from the burning Cheeto to the water was inefficient. The reasons for this were Deficiently contact between the Cheeto and the water, the Misfortune of being warm to the encompassing environment, and Inadequate combustion of the Cheeto.

There are a few reasons why the exchange of warmth from the burning Cheeto to the water within the can might have been wasteful, driving to a high percentage of mistakes within the lab. Here are three conceivable clarifications:

1. Deficiently contact between the Cheeto and the water:

In arranging for warmth to exchange from the burning Cheeto to the water, the two substances got to be in contact with each other.

On the off chance that the Cheeto was not completely submerged within the water, or in case it was not touching the sides of the can, at that point, the warm exchange would have been reduced. This seems to have been caused by the measure or shape of the Cheeto, or by the way it was situated within the can.

2. Misfortune of warm to the encompassing environment:

When warm is created by a chemical response (in this case, the burning of the Cheeto), it tends to disseminate into the encompassing discussion or materials.

This means that a few of the warm created by the Cheeto may have been misplaced in the discussion or to the metal of the can, instead of being exchanged for the water. This seems to have been exacerbated by variables such as a drafty room or a metal can that was not a great conductor of warmth.

3. Inadequate combustion of the Cheeto:

On the off chance that the Cheeto did not burn totally, at that point it would have created less warmth than it would have in the event that it had burned completely. This seems to have been caused by variables such as a more oxygen concentration within the can or deficient ventilation.

Furthermore, on the off chance that the Cheeto was not consistently burned, with a few parcels burning more totally than others, at that point the warm produced would not have been equitably disseminated all through the can, driving to less effective warm exchange. 

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