[I'd really appreciate if I could get some help with this. ]

Complete the table below by indicating what kind of interaction (attract or repel) will be evident when particles of different or like-charges interact?​

The convection currents happen in the mantle, option C.

The statement is correct about the movement of plates that sit on top of the mantle is option D.They regularly move because of the convection currents of oceans.

The statement that is correct about the flow of thermal energy inside Earth is optionB. Energy flow inside the crust causes magma to rise.

The result of boundary plates colliding or sliding past each other is option B. earthquakes occur

Convection currents can be identified in the Earth's mantle wherby the materials that are been heated which is the mantle material will be rising from deep inside the mantle, then the cooler mantle material will definitely sinks which will bring about the convection current.

It should be noted that the Transform boundaries which is as a result of the sliding of the plates   could results in shallow earthquakes.

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Answer: Where do convection currents happen?

Responses= mantle

Which statement is correct about the movement of plates that sit on top of the mantle= They regularly move because of the convection currents of magma.

Which statement is correct about the flow of thermal energy inside Earth= Energy flow inside the mantle causes magma to rise.

Which is a result of boundary plates colliding or sliding past each other= earthquakes occur

Explanation: I took the test

The factor that is not important when choosing a conversion factor is that the value must equal 1.

The conversion factor is used to convert values form one unit to another. This operation is common in science when calculations are made that involves units.

Now, the factor that is not important when choosing a conversion factor is that the value must equal 1.

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Answer: C. Light can cause electrons to be released from the surface of a metal

Explanation:

Answer:

Are you asking for all of them? Some of the basic ones are alluminum and carbon.

The intial temperature of both the acid and the base were 22.6 oc, but they rose to 28.2 oc during the reaction. if the calorimeter constant was 78.5 j/oc   Initial temperature = final temperature - change in temperature

Initial temperature is the average temperature of the contents of the coldest processing container at the start of the thermal processing cycle, as determined by thoroughly stirring or shaking the filled and sealed container. 32°F (0°C). Tell your audience that the freezing point is the  intial temperature at which fresh water begins to freeze. When a liquid turns into a solid, that temperature is known as the freezing point. Water turns from a liquid to a solid at a temperature of 32°F (0°C), which is known as the freezing point.

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The shelf-life of the reconstituted ampicillin suspension remains unchanged at 16 days when stored at room temperature (25°C) compared to storing it in the refrigerator at 5°C.

To calculate the shelf-life of the reconstituted ampicillin suspension at room temperature, we'll assume that the degradation follows an Arrhenius relationship.

Shelf-life at 5°C (T₁) = 16 days

Temperature at 5°C (T₁) = 5°C

Temperature at room temperature (T₂) = 25°C

To find the shelf-life at room temperature, we can use the Arrhenius equation:

k₁ / k₂ = exp((Ea / R) * (1/T₂ - 1/T₁))

Since we don't have specific values for Ea and the reaction rate constants, we'll assume that they are the same for simplicity. Thus, we can write:

k₁ / k₂ = exp((Ea / R) * (1/25 - 1/5))

Simplifying the equation, we get:

exp((Ea / R) * (4/125)) = 1

To satisfy this equation, the exponential term must be zero, which implies:

(Ea / R) * (4/125) = 0

Solving for Ea, we find:

Ea = 0

Since Ea is zero, it means the reaction rate constants and degradation rates are the same at both temperatures. Therefore, the shelf-life at room temperature (25°C) is the same as the shelf-life at 5°C, which is 16 days.

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Answer:

D. Zinc.

Explanation:

Galvanization is a metal-coating process which involves the application of a thin layer of zinc to an iron or steel, so as to prevent rusting or corrosion.

The zinc metal protects the iron from rusting by sealing the surface of the iron and thus, preventing weathering and oxidation.

Hence, if Mike wants to galvanize iron to protect it from rusting. The metal he should use is zinc (Zn) because a coating of zinc would protect the iron (Fe) by corroding first when exposed to moisture or the atmosphere.

Answer:

b

Explanation:

Answer:

it is alkali

Explanation:

hope it helps you

The washing step with 5% aqueous sodium bicarbonate is commonly used to remove any remaining acidic impurities in the crude mixture.

During the synthesis of banana oil, the reaction produces acetic acid as a byproduct. This acid needs to be neutralized in order to prevent it from reacting with the alcohol and ester products. By washing the crude mixture with sodium bicarbonate, any remaining acetic acid will be converted into sodium acetate which is water-soluble and can be easily removed. Additionally, sodium bicarbonate is a mild base which can help to remove any residual water-soluble impurities in the mixture. Therefore, this washing step is crucial for obtaining a pure product in the banana oil synthesizing experiment.
During the banana oil synthesis experiment, the crude mixture was washed twice with 1 ml of 5% aqueous sodium bicarbonate to remove any impurities and unreacted acidic components. This washing step helps neutralize any remaining acids and facilitates the separation of the desired ester, banana oil, from other byproducts. The sodium bicarbonate reacts with acidic compounds, converting them into water-soluble salts, which can then be easily removed from the organic layer containing banana oil. This washing step improves the purity and overall yield of the final product.

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The acid-base interactions significantly affect polymer formation when adding solid acids or bases.

What is PVA?

PVA is in produced by polymerization of vinyl acetate followed by hydrolysis of the resulting poly(vinyl acetate)

Physical crosslinking occurs between same PVA molecules via hydrogen bonding between hydroxyl groups or simply entanglements.

An acidic solution has high concentration of hydrogen ions ( H+)

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Answer:

hoi

Explanation:

For part of our orbit the northern half of Earth is tilted toward the Sun. This is summer in the northern hemisphere; there are longer periods of daylight, the Sun is higher in the sky, and the Sun's rays strike the surface more directly, giving us warmer temperatures. The north pole is in constant daylight!

Explanation:

Answer:

For the given conditions, the average speed of the hydrogen molecules is approximately 1934 m/s, the RMS speed is approximately 1939 m/s, and the most probable speed is approximately 1737 m/s.

Explanation:

To know the average speed, rms speed, and most probable speed of the hydrogen molecules, we will use the following formulas based on the kinetic theory of gases:

What is kinetic theory of gases?

The kinetic theory of gases is a scientific model that describes the behavior of gas molecules based on their motion and interactions. It provides insights into the macroscopic properties of gases by considering the microscopic behavior of individual gas particles.

1. Average Speed (v): The average speed of gas molecules is given by the formula:

v= (8 * k * T) / (π * m)^(1/2)

where:  v is the average speed k is the Boltzmann constant (1.38 × 10^−23 J/K) T is the temperature in Kelvin m is the molar mass of the gas in kilograms

In this case, the molar mass of hydrogen gas (H2) is approximately 2 g/mol or 0.002 kg/mol. Plugging in the values, we get:

v = (8 * (1.38 × 10^−23 J/K) * 300 K) / (π * 0.002 kg)^(1/2)

Simplifying the expression, we find:

v ≈ 1934 m/s

2. Root Mean Square (RMS) Speed (v rms): The RMS speed of gas molecules is given by the below mentioned formula:

V rms = (3 * k * T / m)^(1/2)

Using the same values, we can calculate:

V rms = (3 * (1.38 × 10^−23 J/K) * 300 K / 0.002 kg)^(1/2)

Simplifying the expression, we find:

V rms ≈ 1939 m/s

3. Most Probable Speed (v mp): The most probable speed of gas molecules is given by the below mentioned formula:

V mp = (2 * k * T / m) ^ (1/2)

Using the same values, we can calculate:

V mp = (2 * (1.38 × 10^−23 J/K) * 300 K / 0.002 kg) ^ (1/2)

Simplifying the expression, we find:

V mp ≈ 1737 m/s

Therefore, for the given conditions, the average speed of the hydrogen molecules is approximately 1934 m/s, the RMS speed is approximately 1939 m/s, and the most probable speed is approximately 1737 m/s.

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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:

Part 1 using forests wisely:

Summarize the scientific information that leads to conservation in each of the articles. People are cutting down trees at a panicking rate. A ton of animals and people live in forests and by taking down trees, is taking down their habitat which is causing them to lose their shelter/living place.

Part 1 community conservartion:

People are destroying the forest which is the Gorillas home. People are also hurting these animals and if people keep doing this the Gorillas can go extinct. Mountain Gorillas are one of humanity’s closest relatives, sharing as much as 99% of our DNA.

Part 2 using forests wisely:

What social issues affected the problem or its solution in each of the stories? If people stop cutting down as many trees, there won’t be as many resources from that such as paper, and the cost may go up. Companies will be mad if people stop them from doing business, for example, cutting down trees. Cutting down trees will allow people to make money but if they don’t then they won’t be able to make as much money.

Part 2 community conservation:

If there aren’t as many Gorillas left the prices for the tourists will rise. That won’t be good for the tourists because then they will have to pay more money and some people don’t have a lot of money so that means that there will be less tourists.

Part 3 community conservation:

How did economics delay scientists' first attempts for conservation in each story?|If people keep killing the Gorillas then there won’t be any Gorillas for the tourists to see. If no tourists come that means that there will be no money for the villagers because the tourists are a big part of the economy there. If there is no money from the tourist then there is going to be no job opportunities for the villagers.

Part 4 community conservation:

Describe the political actions that led to successful conservation in both stories.|The political actions that led to success in the forest industry is what they call a FC company that makes the forest industry true. They make it out of a factory and it can make it very successful and accomplished.

Explanation:

I don't have the answers for using forests wisely for number 3 and 4. I'm sorry

Answer:

6.022 x \(10^{22}\) molecules

Explanation:

One mole of any substance has 6.022x \(10^{23}\) particles.

Mr of water: 16 + 2 = 18 g

moles of water given: 1.8/18 = 0.1 moles

Using ratio:

moles   :   molecules

   1        :    6.022x \(10^{23}\)

 0.1      :          X

X = 0.1 x (6.022x \(10^{23}\) )

X = 6.022 x \(10^{22}\)

Answer:

the answer is 5 degree

Explanation:

The substance heats up relatively quickly means less energy needed for the rise in temperature. Therefore, the substance is having low specific heat.

Of all liquids, water has the highest specific heat capacity. The amount of heat that one gram of a substance needs either absorb or lose in order to change its temperature by one degree Celsius is known as specific heat. A compound with "low specific heat" will raise its temperature considerably more quickly than a compound with "high specific heat." J/kg C or J/g C are the units for specific heat. While substances with (high or low) particular heats will be more challenging to heat up, substances with (high or low) specific heats will heat up readily.

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An optically active alditol.

This question relates to the topic of organic chemistry, specifically the reduction of a sugar, D-threose, using NaBH4/H2O. NaBH4 is a reducing agent commonly used to reduce aldehydes and ketones to form alcohols. In this case, the reaction results in the formation of an alditol, which is a sugar alcohol. The answer is that an optically active alditol is formed. This is because D-threose is a chiral molecule, meaning it has a non-superimposable mirror image.

When a chiral molecule is reduced, the resulting product can be either optically active, meaning it rotates plane-polarized light, or optically inactive (racemic), meaning it does not rotate plane-polarized light. In this case, the presence of chiral centers in D-threose ensures that the product formed is optically active. The reduction with NaBH4/H2O adds hydrogen atoms to the carbonyl group of D-threose, resulting in the formation of a new chiral center in the product. This leads to the formation of an optically active alditol.

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The word equation that represents the violent reaction between sodium and water to produce sodium hydroxide and hydrogen gas is:

Sodium + Water → Sodium Hydroxide + Hydrogen

The reactants and products involved in a chemical reaction, as well as their relative amounts, are shown in a chemical equation which is a symbolic representation of the process.

Therefore, The hydrogen gas could ignite and burst as a result of this reaction's strong exothermicity and potential heat release. As a result, it's crucial to handle sodium with caution and carry out this response in a controlled setting.

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Answer:

As temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C

Explanation:

HOPE THIS HELPS !

The pH of the solution after adding 0.010 mol of solid NaOH is 4.47.

The pH of the solution will increase upon addition of the solid NaOH because it is a strong base that will react with the weak acid in the buffer solution. To calculate the new pH, we need to use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

First, we need to determine the initial concentrations of the acid (HA) and its conjugate base (A-) in the buffer solution. Let's assume the buffer contains acetic acid (CH3COOH) and its conjugate base acetate (CH3COO-), and that the pKa of this buffer is 4.76. We can use the equation:

pKa = pH + log([CH3COO-]/[CH3COOH])

Rearranging this equation, we get:

[CH3COO-]/[CH3COOH] = 10^(pKa - pH)

At the initial pH of the buffer solution, let's say it's 4.0, we can calculate the ratio of [CH3COO-]/[CH3COOH]:

[CH3COO-]/[CH3COOH] = 10^(4.76 - 4.0) = 0.251

This means that the initial concentrations of CH3COOH and CH3COO- are in the ratio of 1:0.251.

Now, let's add 0.010 mol of NaOH to the solution. This will react with the acetate ion to form more CH3COOH and water:

CH3COO- + NaOH → CH3COOH + Na+ + OH-

The amount of CH3COOH formed will be equal to the amount of NaOH added, which is 0.010 mol. This will increase the concentration of CH3COOH while decreasing the concentration of CH3COO-. We can calculate the new concentrations of the acid and base using the following equations:

[HA] = [HA]initial + [OH-]added

[A-] = [A-]initial - [OH-]added

Plugging in the values, we get:

[HA] = 1.0 mol/L + (0.010 mol / 1.0 L) = 1.01 mol/L

[A-] = 0.251 mol/L - (0.010 mol / 1.0 L) = 0.241 mol/L

Now, we can calculate the new pH using the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA]) = 4.76 + log(0.241/1.01) = 4.47

Therefore, the pH of the solution after adding 0.010 mol of solid NaOH is 4.47.

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Answer:

Explanation:

Dew forms when the object, such as the glass, cools down to the dew point temperature. Water molecules in the air continually bombard surfaces, like blades of grass If the object gets cold enough, and the air contains enough moisture, condensation exceeds evaporation, and the film grows into dew drops.

Answer:

The current location of the North Magnetic Pole is in the Arctic Ocean, near the coast of northern Canada, specifically in the region of northern Quebec and Ellesmere Island in the Canadian Arctic Archipelago.

Explanation:

However, it's important to note that the North Magnetic Pole is not a fixed point on the Earth's surface, but it is instead constantly moving. The North Magnetic Pole is moving away from Canada and towards Siberia at a rate of about 55 km (34 miles) per year. This movement is caused by changes in the Earth's magnetic field and is known as the "wandering" of the magnetic poles. The exact location of the North Magnetic Pole can be determined by regular measurements and it is used as a reference point for navigation.

Answer:

periods

Explanation:

Answer:

Ability to form four covalent bonds.

Explanation:

Carbon is the first member of group 14. It is essentially a nonmetal. It is a small atom which regularly exhibits tetra valency. This means that carbon is able to form four covalent bonds to four chemical species which may be the same or different each time. This leaves room for many different possible combination patterns of carbon with other chemical species.

Hence carbon forms a very large number of compounds due to its small size and its ability for form four covalent bonds to other chemical species in any bonding situation.

Answer: the ability to form four covalent bonds

Explanation:

Lewis dot structure for water is a schematic representation for determining the total number of valence electrons present in an atom ready to form bonds to form a molecule and ultimately a compound.

Water, one of the main components of the earth, has the molecular formula H2O. A water molecule consists of two hydrogen atoms and one oxygen atom linked by a covalent bond. In addition, two or more H2O molecules are joined together by a hydrogen bond to form a compound.

The oxygen atom forms two sigma single bonds with the hydrogen atoms in the H2O molecule. Although these two hydrogen atoms are arranged symmetrically in a plane, the two lone pairs of electrons on the oxygen atom push these atoms apart.

correct question is:

what is lewis dot structure for water?

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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

Al is most reactive metal than Zn and Cu. Least reactive metal is Cu.

Cu +, Zn 2+, and Al 3+ have ionic radii of 77, 74 and 53.5 pm, respectively.

The electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. The electronic configurations of Cu +, Zn 2+, and Al 3+, on the other hand, are 3d 10 4s 1, 3d 10 4s 2, and 3d 10 4s 2 4p 1, respectively. Cu, Zn, and Al have electronegativities of 1.9, 1.65, and 1.61, respectively. The ionization energy of Al Cu and Zn are 5.98eV, 7.72eV and 9.39eV respectively. Ionization enthalpy, also known as ionization energy or Ei, is the minimal amount of energy needed to liberate the valence electron, the most loosely bonded electron, from an isolated neutral gaseous atom or molecule. Therefore, the least amount of Ionization energy required to move the valence electron is for Al.

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Answer:

Student B because it can be done in natural settings​

Explanation: