what should you do with chemicals leftover after an experiment?

1. To identify the proper order, take note of the ions present in the reactants. 2. Think about various cation-anion combinations. 3. Use the solubility criterion to determine whether one of the combinations produces an insoluble salt.

Cations are ions that are positively charged. Anions are the name for negatively charged ions. Ions are charged atoms or molecules. If one or more of an atom's electrons are lost, it will transform from a balanced atom into a positively charged cation. If an atom adds one or more electrons, it will transform from a balanced atom into a negatively charged anion. Ions come in the form of anions and cations. Because of the contrast between their electrical charges, they are drawn to one another. A cation repels other cations, whereas an anion repels another anion. An anion is an ion that has gained one or more electrons and a net negative charge.

Learn more about Ions here:

https://brainly.com/question/1488567

#SPJ4

Hypochlorites: Widespread water disinfection, as well as disinfection in restaurants, hospitals, food processing facilities, and households. Large-scale water disinfection using chlorine gas.

The removal of hazardous bacteria from surfaces or objects is accomplished through the process of disinfection. By bringing the number of hazardous germs to a level that is safe for human health, disinfection aims to stop the spread of infectious diseases. Hypochlorites, chlorine gas, and lodophors are just a few of the chemical and physical agents that can be employed to disinfect surfaces. The large-scale disinfection of drinking water, the disinfection of houses, hospitals, food processing facilities, dairies, restaurants, and other public places, as well as the antisepsis of wounds and tissues, are only a few applications for these agents. Use of the proper methods, enough time spent in contact with the disinfectant, and proper disinfectant handling and storage are all necessary for effective disinfection.

Learn more about Disinfectants here:

https://brainly.com/question/2934575

#SPJ4

The atomic mass of element x is 66.5340 amu.

The atomic mass, also known as the atomic weight, is the weighted average of the masses of all the isotopes of an element, taking into account their natural abundance. It is expressed in atomic mass units (amu) and is used as an indication of the size of an atom.

The atomic mass of an element can be used to determine the relative masses of atoms and is used in chemical calculations and reactions.

The atomic mass of element x can be calculated by weighting the mass of each isotope by its natural abundance and summing them:

Atomic mass of element x = (mass of 65x * abundance of 65x) + (mass of 67x * abundance of 67x)

= (65.2666 amu * 27.42%) + (66.8273 amu * 72.58%)

= 18.0550 amu + 48.4790 amu

= 66.5340 amu

Therefore, the atomic mass of element x is 66.5340 amu.

To know more about atomic mass refer to:

brainly.com/question/5661976

#SPJ4

A cylinder of gas has a pressure of 4. 882 atm on one day, the temperature (in degrees celsius) on the previous day was 20 °C.

A unit called temperature is used to represent hotness or coolness on a variety of arbitrary scales. Additionally, it illustrates the transfer of heat energy organically.

We formula for,

[tex]\frac{P1}{T1} = \frac{P2}{T2}[/tex]

We have,

Day one's pressure is 4.882 atm.

The following day's pressure is 4.690 atm.

The next day, with a pressure of 4.690 atm, the temperature is 8 °C.

We convert the degree into Kelvin,

8 + 273 = 281 K

Putting the values in the equation

[tex]\frac{4.882}{T1} = \frac{4.690}{281}[/tex]

We get, T1 = 292.5K

293 K converting into Celsius

293 - 273 = 20 °C

Thus, the temperature on the previous day is 20 °C.

Learn more about Temperature questions:

https://brainly.com/question/15694310

#SPJ4

A roller coaster basically gets energy transformed from potential energy to kinetic.

An elevated train track with sharp twists, steep slopes, and occasionally inversions is used in roller coasters, which are a type of amusement ride. The rides are frequently found in theme parks and amusement parks around the world. Passengers go along the track in open vehicles.

Furthermore, a roller coaster is an elevated railway with steep ascents and descents that transports people in a train through tight turns and abrupt changes in speed and direction. It is a well-liked leisure activity that can be found as a continuous loop primarily in amusement parks.

Learn more about roller coaster here:

https://brainly.com/question/30374738

#SPJ1

The correct answer is C. Persistence measures how long a chemical remains in its present state in an area and, therefore, how long it might be a health concern.

Knowledge about the persistence of a chemical is important when considering its toxicity because it determines the length of time that the chemical will remain in the environment and potentially have a negative impact on human health and the environment. Persistence refers to how long a chemical remains in its present state, whether it be in soil, water, or air.

If a chemical has high persistence, it means that it is resistant to degradation and will remain in the environment for an extended period of time. This increases the potential for the chemical to accumulate in living organisms and cause harm.

On the other hand, if a chemical has low persistence, it means that it is rapidly degraded and poses a lower risk to human health and the environment.

In conclusion, understanding the persistence of a chemical is important when considering its toxicity because it provides information about how long the chemical will remain in the environment and potentially pose a threat to human health and the environment.

to know more about organic compund refer here

https://brainly.com/question/10504103#

#SPJ11

As the heat is added into boiling water, its temperature remains constant.The heat source is employed to convert liquid water to vapor, which is the cause.Latent vaporization heat is the name given to this heat.

Boiling water's temperature does not rise when it is heated.Water boils at a temperature of about 100°C (lower at higher altitudes), and any additional heat (technically referred to as latent heat) would only cause water particles in the liquid phase to transition into the gas phase.

A pure water body at 100 degrees Celsius does not alter in temperature when added heat to it.The water instead starts to boil as a result.This kind of situation is referred to as a phase transition or change of condition.

To know more about vaporization visit:

https://brainly.com/question/14480429

#SPJ4

The nitrogen atom in the following molecule has a single pair of electrons that are situated in the sp3 hybrid orbital.

In chemistry, the idea of combining atomic orbitals to create new hybrid orbitals (with varied energies, forms, etc.) suited for the pairing of electrons to form chemical bonds in valence bond theory is known as orbital hybridisation (or hybridization). For instance, the valence-shell s orbital joins with three valence-shell p orbitals to generate four equivalent sp3 mixes that are arranged in a tetrahedral configuration around the carbon atom to connect to four distinct atoms. Hybrid orbital are symmetrically arranged in space and are helpful in the explanation of molecular geometry and atomic bonding characteristics. In most cases, hybrid orbitals are created by combining atomic orbitals with similar energies.

To know more about Hybrid orbital please refer:

https://brainly.com/question/24195443

#SPJ4

Butane is the gas that will condense at the lowest pressure.

Condensation is the process through which matter transitions from its initial gaseous state into its final liquid state. For instance, condensation happens when water vapour in the air, which is in its gaseous state, comes into touch with a colder surface and turns into liquid water.

The process of condensation, which is the reverse of evaporation, converts airborne water vapor to liquid water. Because it causes clouds to develop, condensation is essential to the water cycle.

When warm air meets cold surfaces or when your home is too humid, condensation happens. This moisture-rich heated air immediately cools down and releases the water, which condenses into liquid droplets on the chilly surface when it comes into contact with it.

Learn more about condensing temperature here https://brainly.com/question/15563071

#SPJ4

The bond between Na and O in NaOCH3 is ionic. The bond between O and C in the molecule is polar covalent, and the bonds between C and H in the molecule are nonpolar covalent.

The NaOCH3 molecule is composed of three different types of bonds: Na-O, O-C, and C-H. The bond between sodium and oxygen is an ionic bond. Sodium is a metal and oxygen is a non-metal, and their electron configuration difference results in a transfer of electrons from sodium to oxygen. This results in the formation of sodium and oxygen ions, Na+ and O-, respectively. The O-C bond is a polar covalent bond, where the electron pair is shared between the two atoms but not equally. Oxygen is more electronegative than carbon, resulting in an uneven distribution of electrons, causing the bond to be polar. The C-H bond is a nonpolar covalent bond, as carbon and hydrogen have similar electronegativity values and thus the electron pair is shared equally between them.

Learn more about NaOCH3 here: brainly.com/question/30433999

#SPJ4

Complete question:

For NaOCH3, identify each bond as polar covalent, nonpolar covalent or ionic; NaO, OC, and CH.

The molar mass of NH₄ is 18 g/mole while that of compound of lithium bromide is 86.84 g/mole.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molar mass of  NH₄= 14+ 4= 18 g/mole while that of lithium bromide =6.941+ 79.904=86.84 g/mole.

Learn more about molar mass,here:

https://brainly.com/question/12127540

#SPJ1

The molality of the ethanol in the solution is 5.89 mol/kg

The quantity of a material dissolved in a given mass of solvent is known as its molality (m), also known as molal concentration. The moles of a solute per kilogram of a solvent are how it is defined.

Molal concentration is another name for molality. It is a measurement of a solution's solute concentration. Solute and solvent are the two elements that make up the solution.

From the given information:

mass of ethanol = 14.6 g

mass of water = 53.6 g

The number of moles of ethanol is:

= 14.6 g/46.07 g/mol

= 0.316 mol of ethanol

There are 1000 g in 1 kg of water. In 53.6 g of water, there is 0.0536 kg of water.

Therefore, the molality of ethanol

=0.316/ 0.0536

=5.89 mol/ kg

To learn more about molality

https://brainly.com/question/14665570

#SPJ4

The substance contain exactly 20 grams(g) of Carbon-14 in 1859 years.

The following equation can be used to determine an isotope's general rate of decay:

A(t) = A₀e^λt

where where A0 is the isotope's initial amount at time t = 0

A(t) is its amount at time t,

and λ is the isotope's decay constant

We have the following equation for the carbon-14 isotope:

A(t) = 25e^0.00012t

which mean

A₀ = 25 g

λ = 0.00012y⁻¹

The time (t) at which there is no more substance is what we're trying to determine.

A(t) = 20 g

Rearranging the equation for t, we thus discover:

t= - ln (A(t)/25)   = 1859 years

      0.00012

Your question is incomplete but most probably your full question was

A scientist measures the initial amount of Carbon-14 in a substance to be 25 grams. The relationship between A, the amount of Carbon-14 remaining in that substance, in grams, and t, the elapsed time, in years, since the initial measurement is modeled by the following equation.

A= 25e -0.00012t

In how many years will the substance contain exactly 20 grams(g) of Carbon-14?

Give an exact answer expressed as a natural logarithm. years

Learn more about radio active isotope at https://brainly.com/question/4421649

#SPJ4

When the solvent molecules and the solute molecules mixes together this process is usually the exothermic process.

The interaction of the solvent molecules and the solute molecules is exothermic process as  the bonds are formed. When the  solute molecules form the bonds with the solvent molecules , the heat releases and in the process where the is released are called as the exothermic process. The solution is the  homogeneous mixture that consist of the solute that is dissolved into the solvent.

The mixing of the solvent molecules and the solute molecules are known as the solvation. Solvation can be exothermic process or the endothermic process depends on the nature of solute and the solvent.

To learn more about solvent molecules here

https://brainly.com/question/15217325

#SPJ4

The volume in cubic centimetres is 0.275 cubic cm.

We know that

1 millilitre = 1 cubic centimetre

1 litre =  1 cubic metre  

275.0 μl water sample  =  275 microlitres

275 microlitres =  0.275 mililitre

                         =  0.275 cubic cm

To know more about  Volume

brainly.com/question/13807002

#SPJ4

The lattice energy of NaOH is -900 kj/mol. when 2.990 g of naoh is dissolved in water, 3.33 kj of heat is released. The enthalpy of hydration of naoh is 70.6 kJ/mol.

The enthalpy of hydration is the amount of heat released or absorbed when a substance dissolves in water.

To calculate it, we need to subtract the heat of solution due to the breaking of the solid lattice of the solute from the total heat released during the solution process.

First, we need to convert the mass of NaOH to moles:

2.990 g / (40.0 g/mol) = 0.07475 moles

Next, we can calculate the heat of solution due to the breaking of the solid lattice:

0.07475 moles * (-900 kJ/mol) = -67.3 kJ

Finally, we can calculate the enthalpy of hydration:

ΔHhydration = ΔHsolution - ΔHlattice

ΔHhydration = 3.33 kJ - (-67.3 kJ) = 70.6 kJ/mol

So, the enthalpy of hydration of NaOH is 70.6 kJ/mol.

Here you can learn more about The enthalpy of hydration

brainly.com/question/14016769

#SPJ4

The skeletal structure of (CH3)3CCH(CH3)CH2CH2CH3 in drawn below.

The skeletal structure of (CH3)3CCH(CH3)CH2CH2CH3 refers to the arrangement of the carbon and hydrogen atoms in the molecule, excluding any non-essential atoms such as hydrogens bonded to nitrogens. The molecule has a total of 17 carbon atoms and 33 hydrogen atoms. The carbon skeleton consists of a linear chain of 9 carbon atoms, with 3 methyl groups (CH3) attached to the first, third, and seventh carbon atoms, and a branched chain of 8 carbon atoms attached to the ninth carbon atom. The branched chain consists of a propyl group (CH2CH2CH3) and a vinyl group (CH=CH2). This is the skeletal structure of (CH3)3CCH(CH3)CH2CH2CH3.

Learn more about skeletal structure:

brainly.com/question/29165067

#SPJ4

To properly remove gloves, first, pull the gloves by the fingertips and then, pull on the outside of the glove on 1 side of the hand and remove it. Then insert a finger that has been removed from the glove between the interior edge of the second glove and the skin, and remove the second glove.

Sterile surgical gloves are gloves that are usually used by medical personnel to avoid patient droplets. The purpose of using Handscoon is to prevent cross-infection and prevent transmission of germs, used for surgical and surgical purposes.

When wearing and removing gloves, of course, there are special steps to avoid the spread of bacteria. The steps for removing gloves are:

First, pull the gloves by the fingertips and then, pull on the outside of the glove on 1 side of the hand and remove it. Then insert a finger that has been removed from the glove between the interior edge of the second glove and the skin, and remove the second glove.

Learn more about preparing to apply sterile gloves here :

https://brainly.com/question/28484317

#SPJ4

glycine (simple amino acids, simple carbohydrates, and simple proteins (nucleic acids)) was produced in the flasks at the conclusion of the miller-urey experiment.

The Miller-Urey experiment, was conducted to test the idea that organic molecules could be synthesized in a reducing environment. They assembled an atmosphere similar to what is thought to have existed on primitive Earth. They added a mixture of ammonia, methane, and hydrogen sulfide to the water. There was no oxygen. This was kept at a temperature just below 100°C and a spark passed through the gas mixture to simulate lightning. By the end of the week, 15% of the carbon (from methane) had been converted to simple organocarbon compounds.

To learn more about miller-urey experiment, refer:

https://brainly.com/question/12887279

#SPJ4

When 100 ml of 0.10 m HCN and 0.10 m NaOH are titrated, the pH at the equivalence point is 11.04.

Titration is a common laboratory method for quantitative chemical analysis to determine the concentration of an identified analyte. The reagent sometimes referred to as the titrant or titrator, is prepared as a standard solution with a specified concentration and volume. Titration is widely used in the food industry as an analytical technique. It enables food manufacturers to gauge the amount of a reactant present in a sample. For example, it can be used to determine a food's salt, sugar, or vitamin C or E concentration, which changes the product's hue. At the equivalent point, 200 mL of the solution may hold 10 mmol of cyanide ions.

Learn more about Titration here:

https://brainly.com/question/28562278

#SPJ4

The balanced chemical equation for the oxidation of borneol to camphor using sodium dichromate in acid is:

[tex]2C_1_0H_1_8O+16H^+10Cr_2O_7^2^- - > 2C_1_0H_1_6O+10Cr^+^3+8H_2O+16H^+[/tex]

To calculate the amount of sodium dichromate (Na2Cr2O7 * 2H2O) needed to oxidize 0.50 g of borneol, you can use the mole ratio of reactants. The balanced equation tells us that for every 1 mole of borneol, 10 moles of sodium dichromate are needed.

The molar mass of borneol is 154 g/mol, so 0.50 g is equal to 0.50/154 moles. To find the amount of sodium dichromate needed, multiply this mole amount by 10, then convert it to grams by multiplying by the molar mass of Na2Cr2O7 * 2H2O (298 g/mol).

To know more about chemical equation click on the link below:

https://brainly.com/question/30087623#

#SPJ11

The balanced equation is: [tex]2C2H3Cl + 5O2 → 4CO2 + 2H2O + 2HCl[/tex]assuming the coefficient of HCl is 2.

Given the equation is: [tex]C2H3CI+ 02 = CO2+ H20+ HCI[/tex]

The number of atoms in each element on the left side of the equation must equal the number of atoms in each element on the right side of the equation for the equation to be considered balanced.

Dioxygen and Vinyl Chloride produce Carbon Dioxide, Water, and Hydrogen Chloride. Five moles of Dioxygen [O2] and two moles of Vinyl Chloride [C2H3Cl] react to produce two moles of Hydrogen Chloride [HCl], two moles of Water [H2O], and four moles of Carbon Dioxide [CO2]. It is a combustion as well as redox reaction which indicates an oxidation and reduction reaction at the same time.  

To learn more about HCl click here https://brainly.com/question/24177034

#SPJ4

When writing a correct formula for a compound we must balance the elements in the compound according to their oxidation state by using correct subscripts.

What are elements and compounds?

Pure chemical elements and compounds can be found in nature. An element is a substance made of the same type of atoms as a compound, whereas a compound is made of various elements mixed together in a specific ratio. The elements iron, copper, hydrogen, and oxygen are a few examples. Compounds include, for instance, salt and water (H2O) (Sodium Chloride - NaCl).

So when writing a correct formula for a compound we must balance the

elements in the compound according to their oxidation state by using correct subscripts.

To learn more about Compounds, here

https://brainly.com/question/13516179

#SPJ1

The volume of 223.5 gr C₂H₆ (ethane) would occupy = 166.5 liters.

We must first determine the molar volume of a gas and the molar mass of ethane in order to determine the volume in liters that contains 223.5 grams of ethane gas.

Then, in order to know, we will use dimensional analysis.

Any gas's molar volume = 22.414 L/mol STP

Find the molar mass of the gas C₂H₆ (ethane), as we need to know how many moles there are of it: Adding the individual elemental atomic masses results in:

2C = (2 x 12.01)

= 4.02 amu

6H = (6 x 1.008)

= 6.048 amu

C₂H₆ total = 30.07 amu

The same quantity can be used to determine how many grams there are in a mole of ethane. Simply convert amu to g/mole to determine that 30.07 grams of ethane are required to produce 1 mole of ethane, or 30.07g/mole.

Ethane gas weighs 223.5 grams total.

Divide by the molar mass to determine the number of moles that equals:

(7.433 moles) = (223.5g ethane)/(30.07 g/mole) C₂H₆

"1 mole of any gas at standard temperature and pressure (STP at 273 K and 1 atm) occupies a volume of 22.4 L."

At STP: 7.433 moles of ethane x 22.4 liters per mole

= 166.5 liters.

Learn more about volume of the gas here: https://brainly.com/question/29361538

#SPJ4

Simply put, 1 mole of solute will be dissolved in 1 litre of solution in a 1-M solution. You now are aware that your solution has a volume of 19.0 mL and a molarity of 0.150 M.

If the solution's pOH is known, it is possible to compute the hydroxide ion concentration, [OH -], in mol L-1.

The hydroxide ion concentration in mol L-1 is expressed as the negative logarithm (to base 10) of pOH. pOH = –log 10 [OH -] [OH -] is the amount of hydroxide ions in one mole of water (mol/L or M).

You can anticipate having fewer moles of calcium hydroxide in this sample than you would have in a complete litre of solution because the volume is significantly less than 1 L.

Therefore, 0.0079 moles of oh ions are present in 371.1 ml of 0.143 m calcium hydroxide.

Learn more about moles here:

https://brainly.com/question/29425602

#SPJ4

Yes, you could put sucrose in a glass of water to cause hydrolysis of the sucrose and make glucose and fructose. This process is called hydrolysis, where a sugar molecule is broken down into smaller sugar molecules using water.

In the case of sucrose, it is a disaccharide made up of glucose and fructose molecules joined together. When sucrose is added to water, the water molecules break the bond between glucose and fructose, causing them to separate. This results in the formation of glucose and fructose molecules in the water.

However, the hydrolysis of sucrose in water is not an immediate process. It requires the presence of an enzyme called sucrase, which is responsible for breaking down the sucrose into glucose and fructose. In the absence of sucrase, the hydrolysis of sucrose in water would be slow and incomplete.

To learn more about Glucose here:

https://brainly.com/question/397060#

#SPJ11

Answer:

False

Explanation:

Reaction order is always defined in terms of both reactant and product concentrations. True or false?

False. The number of species whose concentration directly influences the rate of reaction is indicated by the sequence of reactions. The reactant concentrations are always used to specify the sequence of the reactions (but not with product concentrations).

The power dependence of the rate on the concentration of each reactant is the definition of the order of reaction. The rate law of a reaction can be used to fully comprehend the composition of the reaction mixture once that rule has been established. In other words, the reaction order is an exponent that increases the concentration of a certain species, and it demonstrates the extent to which this concentration impacts the rate of reaction. Additionally, it shows the range in which the species has a large impact.

Learn more about concentration here:

https://brainly.com/question/27668304

#SPJ4

There are 3 C-H bonds, 1 C=O bond, 1 C-O bond, 1 O-H bond, and 1 C-C bond in the acetic acid Lewis structure. Trigonal planar and Tetrahedral geometry describe the molecular shapes of CH3COOH. The CH3COOH Lewis structure has a total of 16 bound pairs of electrons and 8 lone pairs of electrons.

We shall learn about the Lewis structure of acetic acid in this post.

Acetic acid, which is a straightforward organic or monocarboxylic acid formed of two carbons, two oxygens, and four hydrogens, has the chemical formula CH3COOH. It is a weak acid that also goes by the name ethanoic acid and comes out as a clear liquid with a pungent vinegar odour. It corrodes tissues as well as metals. Long-term contact to acetic acid can seriously irritate the eyes, skin, nose, throat, and other body parts. Acetic acid turns flammable and explosive at a temperature of 40 degrees Celsius. Acetic acid is a polar or protic solvent when it is liquid. In this article, acetic acid (CH3COOHLewis )'s structure or electron dot structure will be covered.

To know more about lewis structure please refer:

https://brainly.com/question/4144781

#SPJ4

Option B is the correct answer

What is mole fraction ?

The mole fraction of a component in a mixture is a measure of the relative amount of that component in the mixture, expressed as a fraction of the total number of moles of all components in the mixture. The mole fraction is a unitless quantity that is used to describe the composition of a mixture in terms of the number of moles of each component present.

The mole fraction of a component i in a mixture can be calculated as follows:

X_i = n_i / (n_1 + n_2 + ... + n_n)

where X_i is the mole fraction of component i, n_i is the number of moles of component i, and n_1, n_2, ..., n_n are the number of moles of each of the other components in the mixture.

Change all to moles

mol of MgCl2 = mass MgCl2  / MW of MgCl2

MW of MgCl2 = 95.211 g/mol

mol of MgCl2 = 15.8  /95.211 = 0.1659 mol of MgCl2

mol of Mg+2 = mol of MgCl2 = 0.1659

mol of Cl- = 2 * mol of MgCl2 = 2*0.1659 = 0.3318

mol of water = mass water /MW  water =  255/18 = 14.166 mol of water

total mol = mol of water + mol of Mg+2 + mol of Cl = 0.1659 +14.166 +0.3318= 14.6637

Then

mol fraction of Cl = mol of Cl- / total mol = 0.3318/14.6637 = 0.0226 = 0.023

To know more about mole fraction , click the given link below ;

https://brainly.com/question/14783710

#SPJ1

Four separate sets of protons are present in 1H NMR. Consequently, four signals are seen.

Each atom's nucleus houses a volt, a subatomic particle. The particle bears a positive electrical charge, like the particle, but goes in the opposite direction. The mass of a proton, if it were alone, would just be 1.673 1027 kilograms, or almost equivalent to the mass of a neutron.

One down quark with a charge of 13e and two up quarks with a charge of +23e make up a proton. Only roughly 1% of the mass of a proton comes from the rest weights of quarks.

To know more about proton visit:

https://brainly.com/question/1252435

#SPJ4