Where can people get the chemical
potential energy stored by plants?

The properties of the given element, Pb, is as follows:

The periodic table is an arrangement of the elements in increasing order of atomic number.

The atoms of elements are composed of three sub-atomic particles;

The element Lead, Pb,  is a metallic element found in the periodic table and has an atomic number of 82 and an average atomic mass of 207.2

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The complete balanced chemical equation for cellular respiration is as follow:

            Glucose(C₆H₁₂0₆) + 6O₂ --> 6H₂O+ 6CO₂ + ATP.

The process through which cells break down molecules for getting energy is known as cellular respiration. The cells use the oxygen present in air  to accomplish this process and produces CO₂ exhale in the atmosphere. Basically, during process of cellular respiration,  Carbon dioxide is created when the oxygen present in body and the glucose present in food are combined together  converted in to carbon dioxide, water and strongly powered reaction releases energy in the form of ATP molecules. Ion transport, muscular contraction, nerve impulse transmission, substrate phosphorylation, and chemical synthesis are just a few of the processes that use ATP as an energy source.

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The type of glassware that students need to use to prepare 250 ml of a 0.800 m aqueous solution of sucrose is a volumetric flask and the correct amount of solute to use is 68.46g.

It is always recommended to use volumetric flask when you make sucrose solution, as accuracy is very important. Other glassware can be used to make water measurements more accurate, but it is always better to use a volumetric flask to  this stock solution. and the correct amount of solute to use can be calculate as follow:

In this case, sucrose is a solid compound, so the best way to measure it is to use a balance and weigh the required mass based on the concentration of the solution. Therefore, it is best to measure grams of solute on a scale.

The amounts required are:

M = n/V

n = M*V

n = 0.800 * 0.250 = 0.2 moles

To get the mass:

m = n*MM

The molar mass of sucrose is 342.3 g/mol.

m = 0.2 * 342.3

m = 68.46g

Finally, after we have weighed the mass of sucrose we need, so all that remains is to add the solute to the volumetric flask and add water. In this way, sucrose mixes with water into a solution. Then, to make the solution 0.800M, the volume should be 250mL.

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Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :

Zn + 2HCl  ---->  ZnCl₂   +   H₂

Zinc react very rapidly with hydrochloric acid to form zinc chloride and hydrogen gas. This reaction is called as displacement reaction because zinc is displaces the hydrogen and form zinc chloride and hydrogen gas.  The reaction is exothermic because it releases a lot of heat.

Thus, Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :

Zn + 2HCl  ---->  ZnCl₂   +   H₂

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The average molecular velocity can be defined as follows:

Where,

R is a constant

T is the temperature

M is the molar mass

If we assume that the temperature is the same for all gases, the velocity will vary according to its molar mass. We see that the molar mass is inversely proportional to the speed, the greater the mass of the gas, the slower it will move. Therefore we are going to determine the molar mass of the gases:

Therefore, the order according to the average velocity will go. We must organize from the largest molar mass to the smallest molar mass.

BrF

The answer will be 6. Option

Answer:

Most alpha particles passed straight through the gold foil, which implied that atoms are mostly composed of open space. Some alpha particles were deflected slightly, suggesting interactions with other positively charged particles within the atom.

Explanation:  

Rutherford model, also called Rutherford atomic model, nuclear atom, or planetary model of the atom, description of the structure of atoms proposed (1911) by the New Zealand-born physicist Ernest Rutherford. The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun.

The Molality of the aqueous sodium acetate,NaC2H3O2 solution  is  0.298m.

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molality is ,

Molality of the solution=moles of the solute /mass of the solvent

An aqueous sodium acetate solution is made by dissolving 0.185 mole NaC2H3 in 0.620 kg of water. here solvent is the water and solution is sodium acetate.

Moles of NaC2H3O2 = 0.185 mole

Mass of solvent  = 0.620 kg

putting all values in the expression of molality we get,

Molality of NaC2H3O2 = 0.185 mole / 0.620

                                        =0.298m

Hence, the molality of  solution is 0.298 m.

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To find the molar mass, what we do is to follow the steps:

1. Make use of the chemical formula to determine the number of atoms of each element in the compound.

2. Multiply the molar mass of each element with its number of atoms present in the compound.

3. Add up all and assign unit as grams/mole.

In this problem, the molecule of water contains 2 atoms of Hydrogen and 1 atom of Oxygen.

The molar mass of Hydrogen is about 1g/mol and the molar mass of Oxygen is about 16g/mol, so:

Therefore, the answer is 18 g/mol.

Configurational isomers are stereoisomers that can't be transformed into each other via rotating the molecule around a single bond. those configurational isomers may be found in kinds such as geometrical isomers and optical isomers.

Enantiomers are pairs of compounds with precisely equal connectivity however contrary to three-dimensional shapes. Enantiomers aren't the same as every different; one enantiomer can not be superimposed on the alternative. Enantiomers reflect images of every different.

Diastereomers are a kind of stereoisomer. Diastereomers are described as non-mirror pictures, non-same stereoisomers. hence, they arise whilst two or greater stereoisomers of a compound have specific configurations at one or greater of the equal stereocenters and aren't replicate pics of every different

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To answer this, we use Boyle's Law:

States that, at constant temperature, the pressure P of a gas varies inversely with its volume V.

So, if the pressure increases, the volume will decrease.

Answer: The volume decreases.

The concentration of nitrate ion in the final solution is 0.48 M.

An abundance of a constituent divided by the total volume of a mixture is known as concentration. There are various types of concentrations: Mass, molar, number, and volume. The quantity of a solute found in the given amount of solution is the concentration of the substance. Concentration is expressed in terms of molarity.

Molarity means the number of moles per litre. The unit symbol is mol / L or mol / dm³ in the SI unit.

To calculate the concentration of the solution,

                     [tex]C_{1}V_{1} + n C_{2}V_{2} = C * total volume[/tex]       →   1

where,   [tex]C_{1}[/tex]  =  concentration of the starting solution

              [tex]C_{2}[/tex]  =  concentration of the desired solution

               [tex]V_{1}[/tex]  =  volume of the starting solution

               [tex]V_{2}[/tex]  =  volume of the desired solution

As per the question,

Substitute the values in 1,

⇒      [tex]C_{1}V_{1} + n C_{2}V_{2} = C * total volume[/tex]

⇒      0.255 × 0.035 + 2 × 0.328 × 0.045  =  C × 0.08

⇒      0.008925 + 2 × 0.01476  =  C × 0.08

⇒      0.008925 + 0.02952  =  C × 0.08

⇒      C × 0.08  =  0.038445

⇒      C   =  0.038445 /  0.08

⇒      C   =  0.4805625

Therefore, 0.48 M is the concentration of the Nitrate ion in the final solution.

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An aquifer is a geological formation that stores water. they are higher than the surrounding terrain, which can lead to springs or artesian wells that are in motion. An aquifer can be a well, spring, lake ,etc.

Water collects in geological formations called aquifers, frequently at great depths in the earth. Some aquifers are higher than the surrounding terrain, which can lead to springs or artesian wells that are in motion.

Hence, An aquifer is a geological formation that stores water. they are higher than the surrounding terrain, which can lead to springs or artesian wells that are in motion.

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Answer:

d

Explanation:

exotic species, took this last week.

ANSWER

option D

EXPLANATION

When a full bag of trash is placed in a compactor, the compactor will compress the bag so as to allow more trash to fill in. This is done by increasing the capacity of the trash.

Therefore, the volume of the trash bag will changed

Hence, the correct answer is option D

Octanol alcohol is needed to make octyl formate and Formic Acid carboxylic acid is needed to make octyl formate.

The organic substance 1-octanol, commonly referred to as octan-1-ol, has the chemical formula CH3(CH2)7OH. The alcohol is fatty. In general, octanols refer to a wide variety of different isomers. In the industrial setting, octanol is mostly generated by oligomerizing ethylene with triethyl aluminum, followed by oxidation of the resulting alkylaluminium products. The Ziegler alcohol synthesis is the name of this method.

An organic acid with a carboxyl group connected to an R-group is referred to as a carboxylic acid in organic chemistry. R stands for the alkyl, alkenyl, aryl, or other group, and the typical formula of a carboxylic acid is RCOOH or RCO2H. It is common to find carboxylic acids.

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lead(ii) nitrate reacts with sodium sulfate in a double displacement reaction. Pb (NO₃)₂+Na₂so₄⇒Pbso₄+ 2NaNO₃ . nitrogen has highest change in oxidation  number{+2 to +5}

Oxidation state indicates the degree of oxidation for an atom in a chemical compound; it is the hypothetical charge that an atom would have if all bonds to atoms of different elements were completely ionic. Oxidation states are typically represented by integers, which can be positive, negative, or zero.

Pb{+2}⇒Pb{+2} no change in oxidation state

N{+2}⇒N{+5} oxidation state increase by a factor of three

Na{+1}⇒Na{+1} oxidation state no change

S{+6}⇒S{+6} no change in oxidation

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Molar absorptivity and the concentration of the solution whose absorbance is 0.52 at 525nm is 2600M-1 cm-1 and 0.20mM.

Molar absorbance is the measure how strongly a chemical species absorbs at given  wavelength of light. Beers law relates the absorbance of a solution to its molar concentration. Beers law states that the light that absorbs by the solution is directly proportional to the concentration of the substance absorbing the light.

Absorbance and concentration are related to each other using the path length of light and molar absorptivity of the substance. Molar absorptivity of a substance is given by,

          A= E.I.C

          0.26= 1.00cm .e . 0.10 . 10-3 M

           e= 0.26 / 0.10 *10-3 M.cm

              = 2600M-1cm-1

In the same way we have to calculate the concentration of the another sample using path length and molar absorptivity which are same for both the samples .

Calculating the relation, we got the concentration of 0.2mM.

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Answer:

Amorphous solid is a form of solid

Explanation:

Amorphous solid is a solid in which atoms are not arranged in a definite geomatric pattern for eg. glass,paper etc

Answer:

The Dog

Explanation:

The more mass something has the more kinetic energy it has in it.

18 electrons.

According to the question, we have that sulphur has 16 electrons and after bonding with magnesium acquired a 2-charge. The sulphur ion S2- shows that sulphur has gained 2electrons to become stable.

Amount of electron S2- have = 16 electron + 2electrons

Amount of electron S2- have = 18 electrons

Hence the number of electrons S2- ion have is 18 electrons.

Physical property  might help you remove salt from the mixture solubility. Process use to separate the salt from the mixture is filtration and Distillation. Physical property of properties might help to remove iron from the mixture is Magnetism. process will you use to separate the iron from the mixture is using magnet. Physical property or properties might help you remove sand from the mixture is solubility. process use to remove sand from the mixture Filtration.

First we separate iron fillings from the mixture by using magnet. Then we dissolve the sand and salt mixture in water. salt is soluble in water and sand is insoluble in water. sand is now can be separated by the filtration process.  last we have salt mixed in water . on heating the solution water get evaporated and salt crystal are left behind.

Thus, Physical property  might help you remove salt from the mixture solubility. Process use to separate the salt from the mixture is filtration and Distillation. Physical property of properties might help to remove iron from the mixture is Magnetism. process will you use to separate the iron from the mixture is using magnet. Physical property or properties might help you remove sand from the mixture is solubility. process use to remove sand from the mixture Filtration.

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The rate law in general form for this reaction is:

rate = k[A]^m x [B]^n

and we want to determine m and n.

Notice the experiments conducted involved verifying the concentration of one of the reactants while keeping the other constant. By comparing two experiments in this way and noticing the effect on the reaction rate, one can deduce the order with respect to that reactant.

Take experiments 1 and 2 :

Doubling the concentration of OH⁻ while keeping (CH₃)₃CBr constant had  no effect on the initial rate.

This implies the order with respect to [OH⁻] is zero.

From experiments 1 and 3 we  see that doubling the [ (CH₃)₃CBr ] while keeping [OH-] the same doubles the initial rate.

We now have the orders of the two reactants, and the rate law will be:

rate = k [ (CH₃)₃CBr ] [ OH⁻]⁰  = k [ (CH₃)₃CBr ]

We could use another comparison to check our answer. For example comparing 3 and 4,  maintaining  [ (CH₃)₃CBr ]  constant and doubling  [ OH⁻] has no effect on the rate which confirms the order respect to  [ OH⁻]  is zero.

The rate constant we can determine it from any of the experiment by solving for k, for example from experiment 1:

7.14 x 10⁻³ M/s  = k x 0.626 M   ⇒ k = 0.011 s⁻¹

Therefore, the rate constant of the following reaction is 0.011 s⁻¹.

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First, we have to calculate the molecular weights of each molecule:

Then, we have to calculate the number of grams of water. We can calculate them because the process of evaporation lets us know the water amount that was retired:

Then, we're gonna convert the grams of sodium carbonate alone (30.2 g) and the grams of water to moles:

It means that the mole relation is 1:1 approx, as it is the same amount for both. Then, the formula is going to be:

It means that the answer is A.

The balanced equation for the complete oxidation reaction that occurs when methanol CH₃OH burns in air is 2CH₃OH + 3O₂ → 2H₂O + 4CO₂.

When Methane CH₃OH reacts with O₂, it get oxidized and CO₂ and H₂O are formed.

The chemical equation of the oxidation of methane when it burns in the air is,

CH₃OH + O₂ → H₂O + O₂

In order to balance the reaction, we should start first with carbon, then Hydrogen and at the end, we will balance oxygen atoms on both the sides of the reaction,

So, the balanced chemical equation becomes,

2CH₃OH + 3O₂ → 2H₂O + 4CO₂

So, in this reaction, Carbon is getting oxides as it is becoming carbon dioxide by the addition of oxygen into it and Oxygen itself is getting reduced.

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Answer:

it's sample c yh it is true

Answer

B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.

Explanation

In the case of soap, the carbon chain dissolves in oil and the ionic end dissolves in water. Thus, the soap molecules form structures called micelles. In micelles, one end is towards the oil droplet, and the other end which is the ionic faces outside.

Hence, the correct answer is:

B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.

Answer:

True

Explanation:

Answer:

True

Explanation:

A neutral atom must have an equal amount of protons as electrons.  

Gravity is a (n) force between objects and depends on an object's size and their distance apart.

Gravitational force is the attractive that exist between all object with mass an object with mass attracts another object with mass the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects

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Molecules of gas in the air absorb light of shorter wavelengths in the range of 450-495nm is an example of quantitative data.

Quantitative data is defined as the data that can be counts in number or can be measured in numbers. There are two main types of quantitative data : discreate data and the continuous data. examples are age , date, distance , weight etc. so, the countable and measurable quantities in  numbers is quantitative data. Wavelength here is measured in numbers . so, wavelength is the quantitative data.

Thus, Molecules of gas in the air absorb light of shorter wavelengths in the range of 450-495nm is an example of quantitative data.

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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