An electrolyte is a solution containing a large concentration of dissolved ions.
A solution containing a large concentration of dissolved ions is called an electrolyte. It mainly consists of dissolved cations ,anions. Some of the most important and commonly discussed electrolytes are
Calcium which plays a pivotal role in bone health in the body and muscle contraction and relaxation.
Sodium, which is responsible for maintaining osmolarity and nerve impulse conduction, the lack of sodium ions in the body may lead to Hyponatremia.
Potassium is another important electrolyte which is responsible for normal heart function and skeletal growth.
Chloride ions which are in close coordination with sodium ions in the body help in maintenance of the body's blood pressure. It can be obtained from tomatoes, olives, etc.
The shortage of these electrolytes in the body can cause physiological problems like tiredness, lethargy, sleeplessness and improper growth in case of children. Hence it is crucial for us to include all the electrolytes in our diet and have foods that are rich in water and electrolytes to stay healthy and fresh.
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three atoms have the following ground state electron configurations. which statement regarding the atoms is true? atom 1: 1s22s22p63s23p2 atom 2: 1s22s22p63s23p5 atom 3: 1s22s22p63s23p64s1 group of answer choices g
Answer:
atom1:1s22s22p63s23p2
Bond length. Need help solving with explanation I can understand please
The bond length or separation between the two nuclei of X in a molecule of X2A with elemental bond length of 2.22A and 4.28A is 6.5A.
What is bond length?
The bond length or bond distance can be defined as the average distance between the nuclei of the bonded atoms in the given molecule. If it is a polyatomic molecule the bond distance can be calculated by adding the atomic radius of all the atoms involved in bonding.
The separation or bond length of the molecule X2A can be calculated as,
The bond length of elemental A = 2.22A
The atomic radius of A = 2.22 / 2 = 1.11A
The bond of elemental X = 4.28A
The atomic radius of X = 4.28 / 2 = 2.14A
The bond length of molecule X2A = (2.14 + 1.11) x 2 = 6.5A.
Therefore, the bond length or separation between the atoms X in the given molecule is 6.5A.
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ammonium nitrate (nh4no3) dissolves spontaneously and endothermically in water. how is this possible?
Ammonium nitrate , NH₄NO₃ dissolves spontaneously and endothermically in water because the temperature of solution decreases.
When we add ammonium nitrate , NH₄NO₃ to water at 298 K , it dissolves spontaneously and the temperature of system decreases. this means the heat is absorbed by the system and when the heat is absorbed by the system the process is called as endothermic. the ammonium nitrate when dissolve in water it will dissociates in to ions which requires the energy so heat is absorbed. this process in endothermic.
Thus, Ammonium nitrate , NH₄NO₃ dissolves spontaneously and endothermically in water because the temperature of solution decreases.
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an ideal gas sample has a certain volume at 350 k and 1 atm. the volume of the same sample at stp will be closest to the volume at 350 k and 1 atm multiplied by:
0.78 m³ is the volume of the same sample at standard temperature and pressure(stp) will be closest to the volume at 350 k and 1 atm.
What is ideal gas?The ideal gas law (PV = nRT) explains how the macroscopic properties of ideal gases are connected. The particles in an ideal gas are those that: (a) do not interact with one another; and (b) take up no space (have no volume). The ideal gas law does provide a good approximation of real gas behavior in many circumstances, but no gas is truly ideal.
PV = (nRT)
Where;
P₁ = initial pressure = 1 atm
V₁ = initial volume = 1 m³
T₁ = initial temperature = 350 k
P₂ = final pressure = 1 atm
V₂ = final volume = ?
T₂ = final temperature = 273 k
P₁V₁ / T₁ = P₂V₂ / T₂
Solving for V₂;
V₂ = P₁V₁T₂ / P₂T₁
V₂ = 1 × 1 × 273/350
V₂ = 273/350 m³
V₂ = 0.78 m³
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calculate the temperature (in k) at which 0.0938 mol of o2 has a pressure of 740 torr in a 1.0l container.
The temperature (in k) will be 126.509 K
Number of moles of Oxygen = 0.0938 mol
Pressure = 740 torr or 98658.6 Pa
Volume = 1.0 L or 0.001 m3
Temperature in K = ?
To find out the temperature (T) we use the ideal gas equation
PV = nRT
As we have to find the temperature so rearrange the equation for T
T = PV / nR
value of R = 8.314 J/mol.K
Put the values in the equation
V = 98658.6 * 0.001 / 0.0938 * 8.314
V = 0.000974 / 0.779853
V = 98.6596 / 0.779853
V = 126.509 K
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what is the concentration of hydroxide ions after 50.0 ml of 0.250 m naoh is added to 120 ml of 0.200 m na2so4? please show all work.
The concentration of the hydroxide ions after 50 ml of 0.250M NaOH is added to 120ml of 0.200M Na2SO4 is 7.35 x 10^-2 M.
What is meant by concentration?
Concentration is the total amount of solute present in the given volume of solution. this is expressed in terms of molarity, molality, mole fraction, normality etc. The term concentration mostly refers to the solvents and solutes present in the solution.
Concentration of hydroxide ions can be calculated by,
M (OH^-) = V (NaOH) x M (NaOH) / V (total) = 50ml x 0.250M / 50ml + 120ml = 0.0735M = 7.35 x 10^-2 M.
where M (OH^-) = concentration of hydroxide ions, V(NaOH) = volume of NaOH, M(NaOH) = concentration of NaOH.
Therefore, the concentration of the hydroxide ions after 50 ml of 0.250M NaOH is added to 120ml of 0.200M Na2SO4 is 7.35 x 10^-2 M.
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which fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen?
Fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen is coal.
Coal can be made to burn cleaner and reduce the carbon dioxide it it will combine with the purified oxygen. coal is type of fossil fuel. coal is black in color or brownish black. the fossil fuel coal is made up of plant. the plant gets their energy from the sunlight so, it is clear that col is from sun. fossil fuels are non renewable source of energy.
Thus, Fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen is coal.
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The molar mass of a substance can be calculated from its density alone if that substance is an element gas at STP liquid or solid
The molar mass of a substance can be calculated from its density alone if that substance is a gas at STP.
What is the molar mass of a substance?The molar mass of a substance is the mass of one mole of that substance.
One mole of a substance is the amount of that substance that contains as many elementary entities as there are in 12 g of carbon-12.
The number of particles in 12 g of carbon-12 is the Avogadro number = 6.03 * 10²³ particles.
One mole of all gases occupies the same volume at STP.
Also, the molar mass of a gas is related to the vapor density of that gas by the formula below;
The molar mass of a gas = vapor density * 2Hence, the molar mass of a gas can be determined from the density of the gas by multiplying the vapor density of the gas. by 2.
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describe the bohr model for the atom and explain how it accounted for the emission spectra of atoms.
The Bohr model for the atom explains how electrons chenges different energy levels and accounted for the emission spectra of atoms.
The Bohr model postulates that electrons orbit the nucleus at constant electricity ranges. Orbits in addition to the nucleus exist at better electricity degrees. While electrons go back to a decreased strength level, they emit energy in the shape of light.
Bohr's model shows that the atomic spectra of atoms are produced via electrons gaining energy from a few supplies, leaping as much as a better electricity degree, then without delay losing returning to a lower strength stage and emitting the strength difference among the 2 power ranges.
Bohr explained the steadiness of atoms by using presenting that electrons revolve across the nucleus inside the exact circular paths having fixed strength and while transferring in the same orbit they do now not lose or benefit from strength.
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what is the molarity of an ethanol (c2h6o) solution that was prepared by dissolving 50.500 g of ethanol into water to a final volume of 750.0 ml? assume the solution has a density of 1.20 g/ml.
The molarity of the ethanol is 11.29M .
What is molarity ?
Molar concentration, also known as molarity, amount concentration, or substance concentration, is a unit used to describe the amount of a substance in a solution expressed as a percentage of its volume. The number of moles per litre, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the most widely used unit for molarity in chemistry. One mol/L of a solution's concentration is referred to as one molar, or 1 M.
The mass of one mole of ethanol is 46.07 g/mol.
The number of mole in 50.500 g ethanol is 50.500/46.07 = 1.096158 mole.
We know that,
Mass = Density × Volume.
The final volume of the solution 750.0ml and the density of the solution is 1.20g/ml.
The mass of the solution is 1.20g/ml × 750.0ml = 900 gm.
The mass of water is (900-50.500) = 849.5 gm.
So the term molarity is defined as:
One of the most common units of concentration, expressed in M. It is defined as no moles of solute in 1 liter of solution.
The molarity of the solution is:
(1.09615 × 1000)/ 849.5 = 1.29M (approx.).
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Sold substance a has a melting point at 100c. liquid substance b has a freezing point at 110c. for each substance, identify its state of matter and describe the motion of its particles when the substance is at 115c.
Substance A is a solid at 115° Celsius. Its particles are not moving while Substance B is a liquid at 115° degrees Celsius. Its particles are moving around freely.
Solid particles in substance A are not moving because they are held together by strong intermolecular forces. Liquid particles in substance B are moving around freely because they are not held together by strong intermolecular forces.
Intermolecular forces are the forces that hold molecules together. These forces are much weaker than the covalent or ionic bonds that hold atoms together in a molecule, but they are strong enough to keep molecules from flying apart. The four main types of intermolecular forces are dipole-dipole forces, London dispersion forces, hydrogen bonding, and ion-dipole forces.
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if a certain gas has a density of 2.34 g/l at 27.0c and 742 torr, calculate the molar mass of this gas
The molar mass of this gas is 59.0 g/mol.
Molar mass is described as the mass in grams of 1 mole of a substance. The gadgets of molar mass are grams in keeping with mole, abbreviated as g/mol. The mass of an unmarried isotope of any given detail (the isotopic atomic mass) is a cost concerning the mass of that isotope to the mass of the isotope carbon-12.
Calculation:-
PV = nRT
P = 742 torr = 0.976 atm
P × molar mass = density × R × T
0.976 * molar mass = 2.34* 0.0821*300
0.976 * molar mass = 57.6
molar mass = 59.0 g/mol
Therefore, the molar mass = 59.0 g/mol
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when an ionic compound is added to water, the will be attracted to the partially positive h atom of water and the will be attracted to the partially negative o atom of water. as the compound dissolves the ions separate from each other, a process called .
The process by which the ions are attracted to water and separate from each other when dissolved in water is called dissociation.
What is dissociation of ions in water?
The ionic salts when added to water dissolve in water by dissociation. The ions in the ionic compound break the bond between them and get dissolved in water. Water molecules reduce the electrostatic force between the ions and solvate them by surrounding them.
The positive ions of the ionic compound gets attracted to hydroxide ion of water which is negatively charged. The positive ion of the ionic compound gets attracted to protons in water which are positively charged. the ions in ionic compound dissolve by dissociation.
Therefore, due to dissociation the ionic compound dissolves in water and get attracted to opposite charges in water.
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I WILL GIVE BRAINLY PLS HELP
Answer:
Ice wedging
Explanation:
The rocks crack fill with water and then expand
sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. how much hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate?
781 g of hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate.
To find out how much hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate, we need to know the number of moles of HCl present, then multiply that by the molar mass of NaHCO3.
First, we calculate the number of moles of HCl present by solving for x:
x = Moles x 0.1 mol/L
= (Moles)(0.1 mol/L)(1000 mL)
= 100 mmol
Next, we multiply this number by the molar mass of NaHCO3:
=(84.007 g/mol)x(78.129 g/mol)
= 7.8129 x 100 mmol
= 781 g
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will your body be able to function without your skeleton system
ten moles of helium gas and one mole of solid argon are in thermal equilibrium with each other at 10 k. both helium and argon are monatomic, and argon is ten times as massive as helium. how do the average speeds of the atoms in these two substances compare under the conditions specified? explain/justify your answer using appropriate components of the particle model of thermal energy and/or previous models we have used
Helium moves more quickly on average than argon.
How much thermal energy does helium have compared to argon?
Helium has a lower thermal energy than argon does.
Explanation:
Due to the smaller mass of helium atoms in comparison to argon atoms, their average speed is higher under the given conditions. An atom's average speed is inversely related to its mass. While the average speed of an atom reduces as the mass of the atom grows, the opposite is true if the mass of the atom decreases.
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. at the beginning of his experiment, josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. this demonstrates what law?
josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.
In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.
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Put the following elements in order from smallest to largest atomic radius: Carbon, Oxygen, Tin, Strontium
The order of the elements from smallest to largest atomic radius are O<C<Sn<Sr.
What is the definition of an atom's atomic radius?Atomic radius is the separation between an atom's outer electron shell and nucleus. 1/2 the distance between identical atoms that are bound together by their nuclei. Positively charged ions known as cations are smaller than their neutral atom.
Therefore, The distance between the center of the nucleus and the biggest shell inhabited by the valence electron of a neutral element is known as the atomic radius, which is an attribute of atoms. This would rely on the atom's atomic number and the quantity of electrons it contains.
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(1) what is the element with an electron configuration of 1s22s22p63s23p64s23d1? fill in the blank 1 (2) what is the element with an electron configuration of 1s22s22p3?
The first element whose atomic number is 21 is Scandium and the second element whose atomic number is 7 is Nitrogen. Based on electronic configuration
Electronic configuration is a systematic way of distributing the electrons in their orbitals Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.
Electron Configurations are useful for:
Determining the valency of an element.
Predicting the properties of a group of elements (elements with similar electron configurations tend to exhibit similar properties).
Interpreting atomic spectra.
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Name the following structure. (Points)
Thank you, image is attached !
IUPAC nomenclature of structure 1 is 5-bromo-3-ethyl-2,2-dimethylhexane and for structure 2 it is 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
IUPAC nomenclature is based on naming a molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring. All deviations, either multiple bonds or atoms other than carbon and hydrogen, are indicated by prefixes or suffixes according to a specific set of priorities
In structure 1 the longest chain was found to be a 6 carbon chain and the numbering started from the side where it is highly substituted. Hence the name is 5-bromo-3-ethyl-2,2-dimethylhexane
In structure 2 we have a cyclic structure and so the numbering will be done in such a way that all the substituent gets the least numbering hence the name of the compound will be 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
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what is the component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route?
The component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route is option 3 Starches.
A colloid is an aggregate wherein one substance inclusive of microscopically dispersed insoluble debris is suspended throughout another substance. some definitions specify that the debris needs to be dispersed in a liquid, even as others expand the definition to encompass substances like aerosols and gels.
Colloids and crystalloids are two types of solutions used to replace lost blood fluid (plasma). They encompass blood and artificial products. each colloid and crystalloids seem like in addition powerful at resuscitation. There are one-of-a-kind varieties of colloids and those may have exceptional consequences.
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Disclaimer:- your question is incomplete, please see below for the complete question.
what is the component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route?
1. Salts
2. Sugars
3. Starches
4. Minerals
what level of measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics?
Quantitative measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics.
In this measurement the numbers are counted that thus can be used as reference tool. Numbers are used to express quantitative data, which are measures of values or counts. Numerical variables are the subject of quantitative data (e.g. how many; how much; or how often). Qualitative data can be represented by a name, symbol, or number code and are measures of "types."
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what is the ph of a solution made by mixing 40.00 ml of 0.100 m hcl with 25.00 ml of 0.100 m koh? assume that the volumes of the solutions are additive.
The pH of the solution which was made by mixing 40ml of 0.100 M HCL with 25.00ml of 0.100 M KOH is 1.669.
The base and the acid have the same molarity, but the acid's volume is more than the bases' volume, hence after mixing the resultant solution is acidic.
The concentration of OH⁻ solution in the mixture is
= (molarity of base * volume of base - molarity of acid * volume of acid) / total volume
= (40 mL*0.1M - 25 mL *0.1 M ) / (40 mL +25mL)/ 1000)
= 0.021428571 M
pH = -log(0.021428571) = 1.669
Hence the pH is 1.669
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a flask is filled with 1.65 moles of a gas at 26.1 k and 444.8 mm hg. the flask is then opened and additional 1.76 moles are added. the temperature of the flask is then changed to 281.1 k. what is the pressure (in atm) of the flask under these final conditions?
The pressure of the flask under these final conditions is 13 atm .
What are moles ?
The current SI definition of moles and the "new SI" draft definition will be reviewed. Current textbook treatments of moles are compared to these official definitions. From a historical perspective, in 1971 he reviews the treatment of moles and material quantities in textbooks before and after the introduction of these quantities in SI. Textbook definitions do not always match official definitions, but reflect common usage by chemists. This is because when the new SI is adopted, the textbook definition will likely be closer to the official definition, and the draft definition more closely matches what is found in many textbooks than the current official definition. However, SI-based quantities of substances are likely to continue to cause problems for chemistry teachers and, if retained, are largely ignored by chemistry practitioners.
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5
Use this equation for the next question.
Mg(OH)2 + NaCl ® MgCl₂ + NaOH
Does it satisfy the Law of Conservation of Matter?
Yes
No
Answer:
Chemistry Secondary School answered Mg (OH)₂ + HCl→ MgCl₂ + H₂O balance it Answer 5.0 /5 6 Diabolical Answer: The answer will be; = Mg (OH)₂ + 2 HCl → MgCl₂ + 2 H₂O That's all. Find Chemistry textbook solutions? Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6 Preeti Gupta - All In One Chemistry 11 3080 solutions
I need this answer somebody Please help me
The correct responses that describe the various rules in the filling of orbitals are;
1) Aufbau principle
2) Pauli exclusion principle
3) Hund's rule.
What is the orbital?The orbital has to do with the region in space where there is a high probability of finding the electron. We have to know that that looking at the orbitals, we can know how electrons are arranged in the atoms in order of increasing energy.
The Aufbau principle shows us that when we try to fill the electrons into orbitals, we must start from the orbital that has the lowest energy. The Pauli exclusion principle states that no two electrons in an atom can have the same value for all the four quantum numbers. In other words, electrons in the same orbital must have anti parallel spins.
Also, when we are filling electrons into orbitals that have the same energy, we fill them in singly first. This is the statement of the Hund's rule.
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a solution is prepared by dissolving 15.5 g of naoh in 1.50 l of solution. what is the molarity of this solution?
The molarity of a solution that is prepared by dissolving 15.5 g of NaOH in 1.50 L of solution is
How is molarity of solution calculated?The given values are,
volume = 1.50 L
weight of NaOH = 15.5 g
Mass NaOH= 40 g/mol
Therefore, moles of NaOH is = weight / mass
= 15.5 / 40
= 0.3875
We know,
Molarity= moles of NaOH / volume
= 0.3875 / 1.50
= 0.25833 M NaOH
Therefore, we get the molarity of this solution as 0.25833 M NaOH
What is molarity of a solution?Molarity is defined as the number of moles of solute dissolved in one liter of solution. Also called molarity and represented by the letter "M". Molarity formula M = n/v where M is the molarity n is the number of moles v is the total volume of the solution in liters.
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you start with a flask at 900k containing only sulfur trioxide at an unknown pressure and allow the equilibrium below to be established. if the final sulfur trioxide pressure is 5.00 atm, what was its initial pressure? 2 so2 (g) o2 (g) <--> 2 so3 (g) kp
2so3 is the initial pressure that is seen to be used for the chemical reactions with flask 900k
what is pressure in a chemical reaction?
Pressure (P) is defined as the force of all the gas particle/wall collisions divided by the area of the wall: All gases exert pressure; it is one of the fundamental measurable quantities of this phase of matter.We can define pressure as: The force applied perpendicular to the surface of an object per unit area over which that force is distributed.The pressure of the gas is the force that the gas exerts on the container boundaries. The gas molecules move randomly along the given volume. During this movement, they collide with the surface and also with each other.A simple example of pressure may be seen by holding a knife to a piece of fruit. If you hold the flat part of the knife against the fruit, it won't cut the surface. The force is spread out of a large area (low pressure).Pressure is defined as force applied per unit area. Mathematically it is given by, P=FA. where F is the force acting perpendicular to the surface area A. The standard unit of pressure is the pascal (Pa), equivalent to one newton per meter squared (N/m 2 ).The rapid motion and collisions of molecules with the walls of the container causes pressure (force on a unit area). Pressure is proportional to the number of molecular collisions and the force of the collisions in a particular area. The more collisions of gas molecules with the walls, the higher the pressure.to know more about pressure follow
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2. what characteristic must the solvents in a liquid-liquid extraction solvent system share with one another?
In solvent extraction, we use two solvents. The important characteristic of extracting solvent is it should be immiscible with the second solvent.
What is solvent extraction and why is it important?
Solvent extraction also called liquid-liquid extraction (LLE) and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids.The main purpose of solvent extraction is to isolate hazardous materials from the sediments and sludge or separate the useful components from debris.What are immiscible liquids?
Immiscible liquids are those which won't mix to give a single phase.
Oil and water are examples of immiscible liquids.
Thus, in liquid-liquid extraction, the two solvents should be immiscible with each other.
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