a chemist adds of a zinc oxalate solution to a reaction flask. calculate the micromoles of zinc oxalate the chemist has added to the flask. be sure your answer has the correct number of significant digits.

Elements in group 8A have a np6 electron configuration in the outer shell. Therefore, the correct answer option is: (d) 8A.

In Chemistry, valence electrons can be defined as the number of electrons that are present in the outermost shell of an atom of a specific chemical element.

Additionally, valence electrons are used to determine whether an atom or group of chemical elements that are found on a periodic table can chemically bond with others.

In Chemistry, noble gases are chemical elements with eight valence electrons and as such have a full octet. Also, some examples of noble gases are argon, neon, etc.

In conclusion, all noble gases that are found in group 8A of the periodic table have a np6 electron configuration in the outer shell.

Read more on valence electrons here: brainly.com/question/11403796

#SPJ1

The chemical formula of hydroiodic acid is HI.

Chemical formula is as used in chemistry is a notation indicating the number of atoms of each element present in a compound. It shows the type and number atoms of an element present in a compound.

For example, the molecular or chemical formula for ethane is C₂H₆.This shows that ethane contains 2 carbon atoms and 6 hydrogen atoms.

Hydroiodic acid is a compound made up of two elements namely;

Therefore, the chemical formula for hydroiodic acid is HI.

Learn more about chemical formula at: https://brainly.com/question/29031056

#SPJ1

NaHSO4 <NH4NO3<NaHCO3<Na2CO3 salt solutions in order of increasing ph (lowest ph at the top of the list).

The pH scale determines how basic or acidic aqueous or other liquid solutions are. The expression converts the hydrogen ion concentration, which typically ranges between 0 and 14, into values between 1 and 1014 gram-equivalents per litre. It is widely employed in the fields of biology, agronomy, and chemistry. Because it has a pH of 7, or 107 gram-equivalents of hydrogen ions per litre, pure water is neutral (neither acidic nor alkaline).

In an aqueous solution, the amount of hydrogen ions expressed in equivalents per litre is equal to log(H+). Since it indicates which crops will thrive there, a soil's pH is probably the most significant factor affecting its moisture content in agriculture.

To know more about  pH  visit : https://brainly.com/question/17603212

#SPJ4

The 3' end of a strand of DNA contains a hydroxide group extending from the 3rd carbon of the sugar molecule.

The 3' and 5' ends of DNA molecules are referred to as the phosphate-sugar backbone of the molecule. The 3' end of the DNA is composed of a phosphate group and a deoxyribose sugar. The 5' end of the molecule is composed of a phosphate group and a ribose sugar. Both the 3' and 5' ends are connected by a covalent bond between the phosphate group and the sugar.

The 3' end of the DNA molecule is known as the "tail" or "tail end" because it is the end of the molecule that is furthest away from the double helix structure.

The 3' end is also referred to as the "hydroxyl end" because it contains a hydroxyl group. This hydroxyl group is important for certain metabolic processes such as DNA replication and transcription.

The 5' end of the DNA molecule is known as the "head" or "head end" because it is the end of the molecule that is closest to the double helix structure.

The 5' end is also referred to as the "phosphate end" because it contains a phosphate group. This phosphate group is important for certain metabolic processes such as DNA replication and transcription.

To know more about DNA translation, click below:

https://brainly.com/question/22595845

#SPJ4

The formation of molecule can easily be shown by drawing Lewis dot structure. Since atom's Lewis dot structure has three dots. Therefore, the valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.

Lewis dot structure is a way to represent the valence electron of an element in the form of dot.

These are mainly beneficial in understanding the chemical formula of covalent compound. The valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.

Therefore, the valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.

To learn more about Lewis dot structure, here:

https://brainly.com/question/20300458

#SPJ1

Anything that moves in a net direction from a region of higher concentration to a region of lower concentration is said to be diffusing. Because the particles in liquids and gases travel randomly from one location to another, diffusion occurs in these media.

Diffusion is the overall net movement of anything from a higher concentration to a lower concentration. A gradient in the Gibbs free energy or chemical potential drives diffusion.

The molecules' kinetic energy causes random motion, which causes diffusion. This mechanism happens in simple diffusion without the help of a transport protein. The molecules travel from an area of high concentration to an area of low concentration due to their random mobility.

Thus, Because the particles in liquids and gases travel randomly from one location to another, diffusion occurs in these media.

To learn more about diffusion, follow the link;

https://brainly.com/question/13513898

#SPJ1

Ethanol is used in the dna isolation process because it allows the precipitate to form.

Ethanol is defined as the organic chemical compound that contains the elements such as hydrogen, carbon and hydroxide and it's often referred to as alcohol.

Examples of uses of ethanol in the medical section include the following:

This is suitable because addition of ethanol, followed by centrifugation, will cause the DNA proteins to come out of the solution the requires DNA extraction.

Learn more about DNA here:

https://brainly.com/question/21265857

#SPJ1

The ΔHvap for carbon disulfide is 26.06J.

As the temperature rises, so does the water vapor saturation pressure. The rate at which vapour pressure rises for each degree that the temperature rises is determined by the Clausius-Clapeyron equation. Specify p as the saturation vapour pressure and T as the temperature.

In honor of Rudolf Clausius and Benoît Paul Émile Clapeyron, the Clausius Clapeyron equation is a way of explaining a discontinuous phase transformation between two phases of matter of a single constituent. There is no direct relationship between a liquid's temperature and vapour pressure.

Clausius-Clapeyron Equation,

In P = RT/ΔHvap + C

Given,

P = 363 torr,

R = 8.314

T = 46.3°C

C= 25°C

363 = 8.314×46.3/ΔHvap + 25

363 = 384.9/ΔHvap +25

ΔHvap = 384.9/363 + 25

ΔHvap = 26.06J.

To know more about vapor pressure visit:

https://brainly.com/question/8040431

#SPJ1

Hope this answer helps you

The hydrolysis of sucrose is extremely slow in an aqueous solution that can be increased by catalysts.

The sucrase-sucrose complex is produced as an intermediate in a separate reaction pathway with a lower activation energy through which the process progresses.

By offering a new reaction pathway with lower activation energy, catalysts can speed up a reaction. The diagram is consistent with a two-step mechanism in which the sucrase-sucrose complex is created in the first stage as an intermediate and depleted in the second.

An equimolar mixture of fructose and glucose is produced during the hydrolysis of sucrose, which is known as inverted sugar in the food industry.

Inversion is the process of hydrolyzing sucrose to produce glucose and fructose. Invert sugar is the result of the hydrolysis of sucrose, which causes the sign of rotation to shift from dextro (+) to laevo (-).

To read more about hydrolysis, visit https://brainly.com/question/15175159

#SPJ4

The unit cell edge length in pm is 361 pm.

given that :

the density of the metal , ρ = 8.96 g/cm³

atomic mass = 63.54 g/mol

the atomic cell = 4 atoms

Avogadro's number = 6.022 × 10²³ atoms/mol

the expression is given as follows :

cell volume =  (atoms × atomic mass ) / density × Avogadro's number)

                    = ( 4 × 63.54 ) / 8.96 × 6.022 × 10²³)

                    = 4.71 × 10⁻²³ cm³

a = ∛4.71 × 10⁻²³ cm³

a = 361 pm

The unit cell edge length is 361 pm.

Thus, Copper crystallizes in a face-centered cubic lattice (the cu atoms are at the lattice points only). If the density of the metal is 8. 96 g/cm3,  the unit cell edge length in pm is 361 pm.

To learn more about unit cell here

https://brainly.com/question/14719347

#SPJ4

The wavelength is 241.77m.

What is frequency?

Hertz gives the frequency at which a recurring event occurs once every second (Hz). The number of vibrations or cycles per unit of time is the definition of frequency, as we are all aware.

What is wavelength?

A wave's wavelength is the separation between its successive crests, notably between the points of an electromagnetic wave.

frequency = 1.240*10^6 s^-1

speed of light = 2.998*10^-8 m/s

λ = wavelength

C= λv

λ=c/v

λ= 2.998*10^-8 m/s/1.240*10^6 s^-1

λ= 241.77m

Therefore, wavelength is 241.77m.

Learn more about frequency from the given link.

https://brainly.com/question/23739080

#SPJ4

4ml of NaOH is required for neutralization of KHP.

The chemical reaction is as follows:

NaOH + КНР → NaKP + H₂O

The mass of KHP used is 0.1509g, Molar mass of KHP is 204.29g/mol

Then moles of KHP used are given by

Moles of KHP used = 0.1509/204.29

Moles of KHP = 7.35 x 10⁻⁴ moles

The molarity of NaOH is 0.2 M Let the volume of NaOH required for neutralization be V.

Moles of NaOH needed = Molarity x volume of NaOH (L)

                                        = 0.2 x V

As 1 mole of NaOH requires 1 mole of KHP, then

Moles of NaOH required = Molarity of NaOH x volume of NaOH (L)

On substituting the values we get,

0.2 V = 7.35×10⁻⁴

V = 7.35x10⁻⁴/0.2

    = 3.675 X 10⁻³L

V = 3.675 mL

    ≈ 4mL

Therefore, 4 ml of NaOH is required for neutralization.

To know more about neutralization, click below:

https://brainly.com/question/23008798

#SPJ4

The arrangement of the elements from smallest atomic radius to largest atomic radius is S < Se < Na < K

The atomic radius of an element is a measure of the size of the atom of an element.

The atomic radius of an element is calculated as one-half the distance between the nuclei of two covalently bonded atoms of the element. Atomic radius is one of the properties of an atom that show periodicity.

The periodicity of elements is the regular variation of the properties of an element across a period and down a group.

The atomic radius of atoms of elements increases down the group and decreases across a period.

Considering the atomic radius of the given element:

Learn more about atomic radius at: https://brainly.com/question/13126562

#SPJ1

Considering the definition of empirical and molecular formula, the empirical formula is C₃H₅O₂ and the molecular formula is C₆H₁₀O₄.

The empirical formula or minimal formula is one that indicates the type of atoms that make up a compound, the minimum ratio of the integer number of atoms and not necessarily the exact number of atoms in it.

The molecular formula is the actual formula of the molecule and indicates the types of atoms and the number of each type involved in the formation of the molecule.

This formula can be obtained from the empirical or minimal formula, as long as the molecular mass of the compound is known. That is, divide the estimated molecular mass divided by the molecular mass of the empirical form. With the multiple obtained, we proceed to multiply the subscripts of the empirical formula, thus obtaining the molecular formula of the compound.

In this case, you know:

Assuming a 100 grams sample, the percentages match the grams in the sample. So you have:

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

The empirical formula must be expressed using whole number relationships, so:

Therefore the C: H: O mole ratio is 3: 5: 2

Finally, the empirical formula is C₃H₅O₂.

The molar mass of adipic acid is 146.1 g/mol and the molar mass of empirical formula is 69 g/mole.

Dividing the estimated molecular mass divided by the molecular mass of the empirical form, you get:

146.1 g/mol÷ 69 g/mol ≅ 2

This means that in the molecular formula there are 2 unit formulas, so it is necessary to multiply the number of all atoms by 2:

Molecular formula= 2×C₃H₅O₂

Molecular formula= C₆H₁₀O₄

The molecular formula is C₆H₁₀O₄.

Learn more about empirical and molecular formula:

brainly.com/question/26388921

brainly.com/question/14853529

brainly.com/question/13058832

#SPJ1

Answer:

If one is analyzing a solution, for the best accuracy, the volume of titrant used should fall in the upper range of the burette that delivers the titrant. If one is using a 50 ml burette, one would like the volume to fall in maybe the 30 to 45 ml range. If on the first trial, the volume of titrant used is only a few ml, then a larger volume of solution being analyzed should be taken. If the volume of titrant exceeds 50 ml, then a smaller volume of solution should be taken. One should not need three trials. Based on the first trial, one should be able to determine the optimum volume of solution to be analyzed. If one is lucky, the optimum amount may occur on the first trial.

Answer:

Relationship: The Pressure on an Area and the Force Acting Perpendicularly to the Area. The pressure, , on an area, , is given by = , where is the force acting perpendicularly to all the sides of the area

The correct answer in option C. The American tax code, compared to other democracies, Overall, more complex

The tale of King Rex, who was motivated to establish an altogether new and improved legal system for his people, was presented in a 1963 lecture by American legal philosopher Lon Fuller. However, King Rex was a dull, uneducated legislator. Every type of law he enacted was met with fervent popular opposition.

The populace argued that his first new legal system was incredibly ambiguous. After that, he published a legal code that was precise but riddled with baffling paradoxes. Modern democratic state residents and corporate entities might identify with King Rex's subjects on some level. These days, we have to pay for expensive legal specialists to advise us on our legal dangers, rights, and obligations because the legal systems we live under are constantly expanding and becoming so deep, sophisticated, and precisely written.

Learn more about Fragmented nature of American government from given link

https://brainly.com/question/28708103

#SPJ4

Answer: Yes, it is true, hydrogen bonding is strongest intermolecular forces compare with all. In case of nh3, (N-H bonds makes between molecules) and dipole dipole interaction (interaction between two dipole) and london dispersion forces occur between nh3 molecules. this types of intermolecular forces are generated between nh3 molecules.

During tubular reabsorption, solutes are transferred back to the circulation. Glomerular filtration involves the passive transfer of small substances from the blood towards the filtrate.

The second crucial step in the production of urine is tubular reabsorption. Many of the glomerular filtration of solutes needed for proper bodily operation, like amino acids, glucose, et salts, begins in the proximal section of the tubule.

The reverse of reabsorption, tubular secretion is the movement of substances from peritubular capillaries into the renal tubular lumen. Passive diffusion and active transport are the main causes of this secretion. Usually, only a small number of substances—usually waste products—are excreted.

To know more about Tubular reabsorption visit:

https://brainly.com/question/27109115

#SPJ4

Answer:

A test variable is a user-defined, name-value pair that stores and refers to information throughout a test and between tests.

Provide a default value to the variable during declaration.

Change the value of the variable using Set Variable statement. You can use the Add and Insert menus of the Test Editor to create Set Variable statements.

Set hard-coded value or value retried from a data source, such as dataset or reference that appears before the Set statement to the variable.

If a variable is initialized at various places such as test, compound test, schedule, or user group, the product uses the following order to initialize the value of the variable when running the test. The variable set in the variable table of the compound test editor takes the highest precedence followed by others:

Compound test setting in the variable table UI

Compound test specified in a var file

User group setting in the variable table UI

User group specified in a var file

Schedule specified setting in the variable table UI

Schedule specified in a var file

Command line

Outcome variables are usually the dependent variables which are observed and measured by changing independent variables. These variables determine the effect of the cause (independent) variables when changed for different values. The dependent variables are the outcomes of the experiments determining what was caused or what changed as a result of the study.

For a simple example, the marks a student obtains in an exam is a result of the hard word measured in the number of hours put behind studying and the intelligence measured in IQ are the independent variables. The marks obtained thus represents the dependent or outcome variable. When the values of the independent variables are changed, the marks may or may not change and hence dependent variables are dependent on the independent variables while the opposite is implausible i.e., when the marks are changed, it doesn’t change the number of hours of study or the IQ of the student.

The response variable is also called as the dependent variable because it depends on the causal factor, the independent variable. Depending on the various input values of the experimental variables, the responses are recorded.

Taking into account the definition of wavelength, frecuency and propagation speed, the frequency of green light that has a wavelength of 549 nm is 5.46×10¹⁴ Hz.

Wavelength is the minimum distance between two successive points on the wave and it is expressed in units of length (m).

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

The propagation speed is the speed with which the wave propagates in the medium.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f×λ

All electromagnetic waves propagate in a vacuum at a constant speed of 3×10⁸ m/s.

In this case, you know:

Replacing in the definition of propagation speed:

3×10⁸ m/s= f× 5.49×10⁻⁷ m

Solving:

f= 3×10⁸ m/s ÷ 5.49×10⁻⁷ m

f= 5.46×10¹⁴ Hz

In summary, the frequency is 5.46×10¹⁴ Hz.

Learn more about the definition of wavelength, frecuency and propagation speed:

brainly.com/question/2232652

brainly.com/question/7321084

brainly.com/question/14946166

#SPJ1

In a molecule of water, 4 electrons are shared between each hydrogen atom and an oxygen atom.

It is the lowest point in the substance and possesses chemical elements. Atoms don't exist on their own; instead, they combine to create ions and molecules, which combine to create the substances that we can see, feel, and touch. One or more atoms joined together by covalent (chemical) connections make up molecules. Atoms can be imagined as circles with a central nucleus (consisting of protons and neutrons) and one or more concentric circles surrounding it that represent the "shells" or "levels" in which the electrons surrounding the atom's nucleus are located as well as markings that distinguish the electron. every level

To know more about  molecules visit : brainly.com/question/11405437

#SPJ4

The length and width of the swimming pool is 23.08.

What is length?

The term "length" refers to a measurement along an object's largest dimension. A portion of space, or volume, is occupied by a sample of material. Volume of an object can be determined by knowing the length of each side.

What is height?

The vertical distance between an object's top and bottom or its base and something above it is what is meant by the terms height, altitude, and elevation. Height is a vertical measurement, whether or not something is high.

2*6=4800

12=6400

=533^

=23.08

Therefore, the length and width of the swimming pool is 23.08.

Learn more about length from the given link.

https://brainly.com/question/1597347

#SPJ4

1. The limiting reactant would be [tex]B_2[/tex]

2. The number of molecules of product formed would be 3 moles.

In the diagram, the green ball is [tex]A_2[/tex] and the blue ball is [tex]B_2[/tex]. Both react to form [tex]AB_3[/tex] according to the following equation:

[tex]A_2 + 2B_3 --- > 2AB_3[/tex]

From the equation, the mole ratio of [tex]A_2[/tex] to [tex]B_3[/tex] is 1:2. There are 6 green balls ([tex]A_2[/tex]) and 3 blue balls ([tex]B_2[/tex]) in the image. In other words, the ratio of [tex]A_2[/tex] to [tex]B_3[/tex] in the image is 2:1.

Thus, [tex]B_2[/tex] is limiting in availability.

From the equation, the mole ratio of [tex]B_2[/tex] to [tex]AB_3[/tex] is 1:1. With 3 moles of  [tex]B_2[/tex]  limiting the reaction, only 3 moles of [tex]AB_3[/tex] will also be produced going by the mole ratio.

More on stoichiometric problems can be found here: https://brainly.com/question/15047541

#SPJ1

The complete question:

The molecular scene at right represents a mixture of  a2 (green) and b2 (blue) before they react to form ab3. What is the limiting reactant? How many molecules of product can form?

Answer:

1. an electron moving around the nucleus

2. an electron moving on its axis

Explanation:

The best way to remember how atoms move is by comparing them to a solar system. Just like a solar system atoms have a core, in this case the nucleus, and each atom rotates around the nucleus just like planets revolve around a star. They also rotate just like a plant does.

Answer:

The nucleus

Explanation: bohr tells us that the electrons which have a negative charge clicle the orbits in specific nucleus

The processes that come into play during the dehydration process in an oven is option  A. Heat, low humidity and air current.

What are the methods of dehydration?

Foods can be dried in a number of ways, including the sun, an electric dehydrator, a regular oven, a microwave (just for herbs), air drying, and solar drying.

Note that Food dehydration involves simultaneous mass and heat transfers within the food as well as changes in the energy transfer medium. When food is dehydrated using a process other than hot air, the moisture may need to be removed from the food by means of air or another gas.

Hence, One of the simplest methods for preserving food is dehydration. You don't need to purchase specialized jars, preservers, or equipment. Not even a dehydrator is necessary. Food can be dried in your oven, whether it's a toaster oven or a regular oven.

To know more about dehydration from the given link:

brainly.com/question/12261974

#SPJ4

Neither the reduction and phosphorylation of glyceraldehyde 3-phosphate to produce 1,3-bisphosphoglycerate nor the oxidation of a molecule of NAD+ to NADH.

What is G3P and how does it work?

The energy-producing processes glycolysis and glycerolipid biosynthesis both require glycerol-3-phosphate (G3P), which is a necessary component.

                               Enzymes involved in G3P biosynthesis and catabolism, as well as those involved directly or indirectly in G3P biosynthesis, control the amount of G3P in plants.

What is the purpose of glyceraldehyde 3-phosphate?

The end result of the Calvin cycle is glyceraldehyde 3-phosphate, or G3P. A 3-carbon sugar, it serves as the building block for the creation of other carbs.

                                The cycle is continued in part by using this G3P to regenerate the RuBP, but some of it is also available for molecular synthesis and is utilized to create fructose diphosphate.

Learn more about Glyceraldehyde 3-phosphate

brainly.com/question/16795789

#SPJ4

Chemical structure determination involves the chemist identifying the molecular structure and, if possible and necessary, the electronic structure of the target molecule or other solids.

Looking at the molecular structure of PCl3, it is a pyramid with approximately three bond angles. 103°. PCl3 is polar because VSEPR theory predicts a triangular pyramidal molecular structure. Around phosphorus he has four electron density regions. One of them is the lone pair of electrons. In general, the lone pair of the central atom indicates that the molecule is polar.

To know more about molecular structure, visit:

https://brainly.com/question/2120948

#SPJ1