COULD I PLS GET HELPPPP??? What structures are missing from the root hair cells?

Answer:

310 mL

Explanation:

Step 1: Given data

Step 2: Calculate the initial volume

We have a concentrated HBr solution and we want to prepare a diluted one. We can do so using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.400 M × 5.50 L / 7.10 M

V₁ = 0.310 L = 310 mL

Answer:

Nitrogen (N)

Explanation:

From the question given above, the following data were obtained:

Electronic configuration of the element => 1s² 2s²2p³

Next, we shall determine the number of electrons present in the element.

Thus, the number of electrons in the element can be obtained as follow:

Number of electron = 2 + 2 + 3

Number of electron = 7

Next, we shall determine the number of protons in the element.

Since the element is neutral, the number of protons is the same as the number of electrons. Mathematically,

Number of protons = number of electrons

Number of electron = 7

Therefore,

Number of protons = 7

Finally, we shall determine the atomic number of the element.

The atomic number of an element is the number of protons in the atom of the element. Mathematically,

Atomic number = number of protons

Number of protons = 7

Therefore,

Atomic number = 7

Comparing the atomic number of the element ( i.e 7) with those in the periodic table, the name of the element is Nitrogen (N) since no two elements have the same atomic number.

Answer:

b

Explanation:

im pretty sure could be wrong

Answer:

B is your answer. Silicone has 4 valence electrons.

Answer:

saltation

Explanation:

Answer:

From solutions that evaporate

From hot water solutions when the solution cools

Explanation:

The substances that can form minerals can be dissolved in the water to form a solution. Solution can be described as as a mixture in which a solute is dissolved in a solvent. When a particular dissolved solute evaporates from the solution, crystals of minerals might form. The mineral halite was formed when seas evaporated over a period of time.

The minerals can also be formed when a hot water solution gets cooled.

BaSO4 is an ionic compound as it contains SO4 polyatomic ions in it.

Basically BaSO4 molecule does not have its own original shape as it is only an ionic compound and there is no bonding between Ba and SO4 ions, there is just sharing of electrons within the molecule.

Thus BaSO4 lewis structure does not have any shape.

What is the Lewis structure?

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Answer:

1.17 M

Explanation:

Step 1: Given data

Molar concentration of Li₃PO₄: 0.390 M

Step 2: Write the reaction for the dissociation of Li₃PO₄

Lithium phosphate is a strong electrolyte that dissociates according to the following equation:

Li₃PO₄(aq) ⇒ 3 Li⁺(aq) + PO₄³⁻(aq)

Step 3: Calculate the molar concentration of lithium ions

The molar ratio of Li₃PO₄ to Li⁺ is 1:3. The molar concentration of Li⁺ is 3/1 × 0.390 M = 1.17 M.

Considering the definition of strong electrolyte, the molar concentration of Li⁺ is 1.17 M.

An electrolyte is a substance that, when dissolved in water, gives rise to the formation of ions.

Electrolytes can be weak or strong, depending on whether they are partially or fully ionized or dissociated in aqueous medium.

A strong electrolyte is any substance that, when dissolved in water, exclusively causes the formation of ions with a practically irreversible dissolution reaction. That is, it is a solute that completely dissociates into ions in solution.

Lithium phosphate is a strong electrolyte that dissociates according to the following equation:

Li₃PO₄(aq) ⇒ 3 Li⁺(aq) + PO₄³⁻(aq)

From the balanced equation, you can observed that:

1 mole of Li₃PO₄ produced 3 mole of Li⁺.

Therefore, 0.390 M Li₃PO₄ will produce = 3 × 0.390 = 1.17 M Li²⁺

In summary, the molar concentration of Li⁺ is 1.17 M.

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Answer:

When applied to your skin, potassium permanganate kills germs by releasing oxygen when it meets compounds in your skin. It also acts as an astringent, which is a drying agent. Some of the conditions that potassium permanganate can help treat include: Infected eczema.

1. A mixture of ammonium chloride, sand, and zinc chloride should be separated by sublimation.

2. A mixture of zinc chloride and silver chloride should be separated through crystallization.

A separation technique can be defined as a technique that is typically used to separate or convert two (2) or more mixture and solution of chemical substances into distinct product such as chemical compounds or elements.

In Chemistry, there are various types of separation technique used for the separation of mixtures or solutions and these include:

In this scenario, the most effective and efficient means to separate a mixture of ammonium chloride, sand, and zinc chloride is by sublimation from solid to gas state.

On the other hand, the best means to separate a mixture of zinc chloride and silver chloride is through crystallization.

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The enthalpy change is the difference in the energy of formation of the products minus that of the reactants, we have the following formula:

ΔHr = Σn*ΔH (products) - Σn*ΔH (reactants)

Now, we are given the values for the energy of formation of all the compounds that participate in the reaction. We must always make sure that the reaction equation they give us is balanced, in this case, it is balanced since the atoms of each element are the same on each side of the reaction.

Now, let's calculate the energy of the formation of the products and reactants separately.

For the products we will have to:

For the reactants we will have to:

So, the change of enthalpy will be:

Enthalpy change is 992kJ

Answer:

              2.13 × 10²² moles

Explanation:

Relation between Mole and Mass is,

                             Mole = Mass / M.Mass

Putting values,

                             Mole = 2.3 × 10²⁴ g / 107.87 g/mol

                             Mole = 2.13 × 10²² moles

This problem is asking for the equilibrium constant at two different temperatures by describing the chemical equilibrium between gaseous nitrogen, oxygen and nitrogen monoxide at 25 °C and 1496 °C as the room temperature and the typical temperature inside the cylinders of a car's engine respectively:

N₂(g) + O₂(g) ⇄ 2 NO(g)

Thus, the calculated equilibrium constants turned out to be 6.19x10⁻³¹ and 9.87x10⁻⁵ at the aforementioned temperatures, respectively, according to the following work:

There is a relationship between the Gibbs free energy, enthalpy and entropy of the reaction, which leads to the equilibrium constant as shown below:

\(\Delta _rG=\Delta _rH-T\Delta _rS\\\\\Delta _rG=-RT ln(K)\)

Which means we can calculate the enthalpy and entropy of reaction and subsequently the Gibbs free energy and equilibrium constant. In such a way, we calculate these two as follows, according to the enthalpies of formation and standard entropies of N₂(g), O₂(g) and NO(g) since these are assumed constant along the temperature range:

\(\Delta _rH=2*90.25 kJ/mol - (0 kJ/mol+0 kJ/mol)=180.5kJ/mol\\\\\Delta _rS=2*(0.211 kJ/mol*K)-(0.192kJ/mol*K+0.205kJ/mol*K)=0.025kJ/mol*K\)

Then, we calculate the Gibbs free energy of reaction at both 25 °C and 1496 °C:

\(\Delta _rG_{25\°C}=180.5-(25+298.15)*0.025=172.42kJ/mol\\\\\Delta _rG_{1496\°C}=180.5-(1496+298.15)*0.025=135.65kJ/mol\)

And finally, the equilibrium constants derived from the general Gibbs equation and Gibbs free energies of reaction:

\(K=exp(-\frac{\Delta _rG}{RT} )\\\\K_{25\°C}=exp[-\frac{172420 J/mol}{(8.3145\frac{J}{mol*K})(298.15K)} ]=6.19x10^{-31}\\\\K_{1496\°C}=exp[-\frac{135650J/mol}{(8.3145\frac{J}{mol*K})(1769K)} ]=9.87x10^{-5}\)

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We can measure the slope of the tangent line to the curve at a certain position on a graph to calculate the pace of a response at that time.

A reaction is a process in which one or more reactants are changed into one or more products, also known as the final products. Atoms are rearranged and chemical bonds are made and broken between the atoms during a chemical reaction, which transforms reactants into products.

The instantaneous rate of the response at that particular time is indicated by the slope of the tangent line.

If we have a graph of the quantity of product produced over time, for instance, we can choose a point on the curve that represents a certain period, draw a tangent line to the curve at that location, and then calculate the slope of the line. The pace of the reaction at that specific moment is shown by the slope of the tangent line.

The average rate of the response over a certain period of time can be calculated by repeating this method at various points on the curve to produce a series of instantaneous rates.

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The Sun rotates at different rates at different latitudes on the Sun

The sun revolves around its axis like a ball in motion. One cycle of the sun takes approximately 27 days. But the sun rotates at various rates in various parts. The sun's equator rotates more quickly than its poles. Differential rotation is the name given to this phenomena.

The depth of the sun also affects how quickly it rotates, with the core regions rotating more slowly than the outer regions.

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Missing parts;

Which statement about the Sun's rotation is TRUE?

The Sun rotates only at the equator, where the sunspots are found; the rest of the Sun does not rotate

Only the atmosphere of the Sun rotates, not the main body of the Sun

The Sun rotates at different rates at different latitudes on the Sun

The Sun rotates once a day

The Sun does not rotate; only planets rotate

Answer:

780

Explanation:

AT first this question looks difficult but if you read it closely its simple. so what we know is that for ever 60 miles he drives 13 hours. So all we have to do is mulyiply 60x13.

To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, the products are carbon dioxide, sulfur dioxide and water.

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.

The other characteristic of balanced equation is that physical state should be written with each compound or molecule on reactant and product side. Physical state should be written in brackets. s means solid, l means liquid, g means gas.

The balanced equation is

CH\(_3\)SH + 4O\(_2\) → CO\(_2\) + SO\(_2\) +2H\(_2\)O

The products that are formed in the given reaction are carbon dioxide, sulfur dioxide and water.

Therefore, the products are carbon dioxide, sulfur dioxide and water.

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Answer:

If there are more products than reactants, that means the reaction has shifted towards the left, which is the backward direction. If there are more reactants than products, that means the reaction has shifted towards the right, which is the forward direction.

Answer:

H2O(g) (negative)

Explanation:

Answer:

hydro, water

Explanation:

Answer:

Kauai

Explanation:

I look this up when I am doing math

The phenomenon that best explains the miscibility of heptane in pentane is that both are non-polar compounds.

Solubility is defined as the ability of a solute or substance to dissolve in a given solvent and at a particular temperature.

Heptane is a straight-chain alkane hydrocarbon that contains 7 carbon atoms. It is a non polar solvent.

Pentane is also a straight-chain alkane hydrocarbon that contains 5 carbon atoms. It is also a non- polar solvent.

Both pentane and heptane are non-polar because the atoms in their molecules share electrons equally. They are able to dissolve each other because they are alike.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

sugar

Explanation:

Answer: d

Explanation: Wind and rain interacted with the rock, breaking it into small pieces.

Keanu realizes the sand used to be part of the rock formations. Wind and rain interacted with the rock, breaking it into small pieces and turn into sand. Therefore, option D is correct.

A rock formation refers to a specific arrangement or pattern of rocks in a particular area that has formed over a long period of time due to geological processes such as erosion, weathering, and tectonic activity.

Wind and rain interacted with the rock, breaking it into small pieces. Over time, the forces of weathering and erosion can break down rock formations into smaller and smaller particles, including sand.

Wind can carry these particles away from their original location and deposit them elsewhere, such as on a nearby beach. In the case of the black sand on the beach in Hawaii, it is likely that the sand was formed from the weathering and erosion of the volcanic rock that makes up much of the island.

Thus, option D is correct.

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Answer: 63

Explanation: (3.78/6.022)*100

The separation of the dye into its individual components is based on the principle of adsorption chromatography, where the stationary phase is a solid adsorbent that retains the components of the mixture based on their adsorption properties.

Answer all the questions, use the answer grid provided. The branch of chemistry that involves the study of chemical nature of living matter is Biochemistry. Biochemistry is a branch of science that deals with the study of chemical processes within and relating to living organisms. It is an interdisciplinary field that involves the application of chemistry, biology, physics, and mathematics to the study of biological systems. It focuses on the chemical and physical properties of living things and their interaction with the environment.Biochemistry can be divided into two main categories, which are structural biochemistry and functional biochemistry. Structural biochemistry deals with the study of the chemical structure of biological molecules such as proteins, carbohydrates, and lipids. It involves the analysis of the molecular structure and the physical properties of these molecules. Functional biochemistry, on the other hand, focuses on the study of the chemical reactions and processes that occur within living organisms. It involves the study of metabolic pathways, enzymology, and the regulation of cellular processes. 2. The diagram below shows the chromatogram for a dye.Chromatography is a technique used to separate mixtures into their individual components. It works on the principle that different compounds will move at different rates through a stationary phase under the influence of a mobile phase. In this case, the dye is separated into its individual components by passing it through a stationary phase of paper under the influence of a mobile phase of water.As can be seen from the chromatogram, the dye has been separated into three distinct components, which are represented by the three peaks on the graph. The first peak represents the component that moved through the paper at the fastest rate, while the third peak represents the component that moved through the paper at the slowest rate. The second peak represents the component that moved through the paper at an intermediate rate.

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There are 0.566 moles of carbonate in sodium carbonate.

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3. Proton is the subatomic particle which accounts for most of an atom's mass.

4. Electrons are the subatomic particle which accounts for most of atoms volume.