You add 9.6g of iron to 23.60mL of water and observe that the volume of iron and water together is 24.82mL. Calculate the density of iron…. Express in Value & Units

The energy required to heat 419.0mg of iron from 1.2 degree C to 15.1 degree C is 2.625 J. This is calculated from the expression of Specific heat capacity.

Heat capacity is a characteristic of an object that explains the amount of heat required to change its temperature by one degree. Heat Capacity has the units of energy per degree. Specific Heat Capacity is the amount of heat required to change the temperature of a mass unit of a substance by one degree. Specific heat is a common term for the specific heat capacity.

Q = m*c*dT

This is the equation for specific heat capacity. here, m is the mass of the sample, c is the specific heat, and ΔT is the temperature change.

Putting all the values we get,

m = 419 mg = 0.419 g of Iron

dT = 15.1 -1.2 = 13.9 °C

Q = 0.419*0.449*13.9 = 2.615 J

To learn more about Specific heat capacity please visit:

https://brainly.com/question/27991746

#SPJ4

Chromatography is the technique that depends on the differences in the rate of travel of the different substances through a solid medium. This statement is true.

Chromatography is defined as the process for separating the components of a mixture. By dissolving the mixture of the interest in the mobile phase and transporting it through the stationary phase, mixture to its constituents can be separated from one another which is based on their different speeds of travel. The common chromatography are :

Thu, the given statement is true that the  chromatography is a technique that depends on the rate of travel of different substances through the solid medium.

To learn more about chromatography here

https://brainly.com/question/18365535

#SPJ4

Yes, they risk their percentage water being too high.

The hydrate might absorb air moisture that would cause a higher percentage calculation of water.

If the lab group only heats the hydrate for 5 minutes instead of 10 minutes, they risk their percentage water calculation being too high. This is because when heating a hydrate, the water molecules are removed from the crystal structure, and if the heating is not done for long enough, not all of the water molecules will have been removed, resulting in a higher percentage of water calculated.

If a lab group delays weighing after heating, several things could happen that would throw off the results. One possibility is that the hydrate could absorb moisture from the air, which would result in a higher percentage of water calculated. Additionally, if the contents of the evaporating dish are not properly sealed, there is a risk of evaporation of the remaining water which would result in a lower percentage of water calculated. In addition, the hydrate could become contaminated with other substances, which would also result in inaccurate results

Learn more on percentage calculation of water here: https://brainly.com/question/2426547

#SPJ1

Answer:

0.58 milligrams

Explanation:

If this isnt correct than I appologize.

Just half of the power of tt makes up 60 hours. Then it is divided by t half knowing that there is 12.8 hours left.  Then if you calculate it we get 0.58 mg and so after the 2 days and 16 hours we get our answer.

The expected product of the reaction H3O+ is: C) A primary alcohol

H3O+ is a protonated water molecule, also known as a hydronium ion. When an alcohol molecule is treated with H3O+, it can undergo an acid-catalyzed reaction called an "alcohol dehydration" which results in the removal of a molecule of water and the formation of an alkene. The H3O+ acts as an acid, donating a proton (H+) to the alcohol molecule, which results in the formation of an alkyloxonium ion intermediate. This intermediate then loses a molecule of water to form an alkene.The product of the reaction is affected by the type of alcohol that is present in the reaction. In the case of a primary alcohol, it will lose water to form an alkene and a primary alcohol will lose water to form an alkene with one less carbon atom than the alcohol. A secondary alcohol and a tertiary alcohol will lose water differently and will not form an alkene, instead, they will form a carbocation intermediate which is not a stable species and will react further with other reagents to form other products.An epoxide is a cyclic ether and it is not formed from the reaction of an alcohol with H3O+.

Learn more about  primary alcohol here:

https://brainly.com/question/7207863

#SPJ4

The addition of an aqueous solution with a pH less than 7 to sodium bicarbonate causes bubbling is chemical change. I'm frying an egg is chemical. The reduction in vapor pressure caused by the addition of salt to a liquid is physical change.

Combination of yellow and blue paint to create a green paint is  chemical. Formation of solid after reagent combination is chemical. Crystal formation upon solution formation is physical. Melting point is a physical property, as it refers to the temperature at which a substance changes from a solid to a liquid state. The addition of an aqueous solution with a pH less than 7 to sodium bicarbonate causes bubbling.. This is a chemical change as a new substance is formed (carbon dioxide gas) and the bubbling is due to the release of CO2 gas.Cooking an egg. This is a chemical change as the proteins in the egg change structure and form new compounds The lowering of vapor pressure after salt is added to a liquid, this is a physical change because it is a change in the physical properties of the liquid. Combination of yellow and blue paint to create a green paint is a chemical change.

Learn more about compound here:

https://brainly.com/question/3648919

#SPJ4

Option (d) is correct.  Liquid F2 has weak dispersion force attractions between its molecules whereas liquid HF has both weak dispersion force attractions and hydrogen bonding interactions between its molecules.

Dispersion forces are the temporary attraction between two adjacent atoms. Electrons are unsymmetrical which creates a temporary dipole. This dipole causes an induced dipole in the other atom which leads to the attraction between the two. The high boiling point of HF is not attributable to the dispersion forces. In HF, a stronger attraction present is hydrogen bonding. The strength of dispersion forces is proportional to the polarizability of the molecule.  The more polarized the stronger is the forces.

To learn more about Dispersion forces please visit:

https://brainly.com/question/12625570

#SPJ4

The complete question is:

The electron cloud of HF is smaller than that of F2, however, HF has a much higher boiling point than F2 has. Which of the following explains how the dispersion-force model of intermolecular attraction does not account for the unusually high boiling point of HF?

A. F2 is soluble in water, whereas HF is insoluble in water.

B. The F2 molecule has a greater mass than the HF molecule has.

C. Liquid F2 has weak dispersion force attractions between its molecules, whereas liquid HF has strong ionic interactions between H+ and F- ions.

D. Liquid F2 has weak dispersion force attractions between its molecules, whereas liquid HF has both weak dispersion force attractions and hydrogen bonding interactions between its molecules.

When ethanolic KOH and 2-Bromo-2-methyl butane are refluxed, the main product that results is 2-methylbut-2-ene. A combination of 2-methyl-2-butene and 2-methyl-I-butene is created when 2-bromo-2-methylbutane is subjected to a base reaction.

2-Methyl-L-Butene makes up 459 of the resultant mixture when potassium hydroxide is the base. Because the bromine-attached carbon atom is linked to the other two carbon atoms, the molecule is known as a secondary alkyl halide. As a result, 2-bromobutane is known as a secondary alkyl halide. The liquid is colorless and has a lovely aroma. Since 1-bromobutane is a main alkyl halide, it is created through bimolecular nucleophilic substitution processes (Sn2).

Learn more about it ethanolic here:-

https://brainly.com/question/20814130

#SPJ4

The correct answer is c. 0.378 g of Ca3N2

The balanced chemical equation for the reaction is:

3Ca + N2 → Ca3N2

We can see that for every 3 moles of calcium, 1 mole of nitrogen is used. Using the molar mass of calcium (40.08 g/mol) and nitrogen (28.02 g/mol) we can calculate how many moles of each reactant we have.

4.00 g of nitrogen is equal to 4.00 g / 28.02 g/mol = 0.1428 mol of nitrogen

We know that we have an excess of calcium, so we only need to consider the amount of nitrogen present.

We can use the stoichiometry of the reaction to calculate how many grams of Ca3N2 are produced.

1 mole of nitrogen reacts with 3 moles of calcium to produce 1 mole of Ca3N2

0.1428 mol N2 x (1 mole Ca3N2 / 3 mole N2) = 0.04760 mole of Ca3N2

We can convert this number of moles to grams using the molar mass of Ca3N2 (128.09 g/mol)

0.04760 mole of Ca3N2 x 128.09 g/mol = 0.378 g of Ca3N2

the following statements regarding the naming of the oxoanions containing chlorine.

a. ClO^- is the hypochlorite ion True

b. ClO2- is the chlorite ion-True

c. ClO3- is the chlorate ion-True

d. ClO4- is the perchlorate ion-True

An ion is an atom or molecule that has an unequal number of protons and electrons, giving it a net electrical charge. Ions can be positively charged (called cations) or negatively charged (called anions).The hypochlorite ion (ClO^-) is a negatively charged ion that contains one chlorine atom and one oxygen atom. It is formed when chlorine gas dissolves in water or when electrolysis is applied to saltwater. Hypochlorite ions can act as oxidizing agents and are used in various cleaning and disinfecting products.The chlorite ion (ClO2^-) is a negatively charged ion that contains one chlorine atom and two oxygen atoms. It is formed by the oxidation of chlorine dioxide and it is an intermediate product during the bleach production. Chlorite ions are also used as a sanitizing agent and water treatment.

To learn more about oxoanions here:

https://brainly.com/question/29192446

#SPJ4

The molecules feature a linear arrangement of atoms with a 180° bond angle when hybridization takes place. Example: CO 2 hybridization. Carbon undergoes sp2 hybridization.

what is meant by hybridization?

A new form of hybridized orbitals is created by combining two atomic orbitals, which is known as hybridization in chemistry. Hybrid orbitals with completely distinct energies, forms, etc. are typically created as a result of this intermixing. For the most part, hybridization involves atomic orbitals at the same energy level. But if the energy is equal, both fully and partially filled orbitals can participate in this process.

On the other hand, we can claim that the notion of hybridization is a development of the valence bond theory and that it aids in our comprehension of the creation of bonds, bond energy, and bond lengths.

To know more about hybridization refer to:

https://brainly.com/question/22765530

#SPJ4

30.9 grams of dichloromethane (CH2Cl2) will be formed upon the complete reaction of 30.9 grams of carbon tetrachloride with excess methane.

The balanced equation for the reaction is: CH4(g) + CCl4(g) -> CH2Cl2(g) + HCl(g). To determine the amount of dichloromethane (CH2Cl2) that will be formed upon the complete reaction of 30.9 grams of carbon tetrachloride with excess methane, we can use the concept of stoichiometry. Stoichiometry is the branch of chemistry that deals with the quantitative aspects of chemical reactions, including the mass relationships between reactants and products.From the balanced equation, we can see that the reaction has a 1:1 ratio between the carbon tetrachloride and the dichloromethane. Therefore, if we know the amount of one substance, we can calculate the amount of the other substance by using the stoichiometric ratio. 30.9 grams of CCl4 will react with an excess of methane to form 30.9 grams of CH2Cl2. So the answer is 30.9 grams of dichloromethane (CH2Cl2) will be formed upon the complete reaction of 30.9 grams of carbon tetrachloride with excess methane.

Learn more about chemical reaction here:

https://brainly.com/question/29762834

#SPJ4

The complete question is :

according to the following reaction, how many grams of dichloromethane () will be formed upon the complete reaction of 30.9 grams of carbon tetrachloride with excess methane ()?methane (CH4)(g) + carbon tetrachloride(g)  dichloromethane (CH2Cl2)(g)

The volume in cubic inches 1.5x10^5in3 if A backyard pond has 2.5 M3 of water.

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height. How you refer to the different dimensions does not change the calculation: you may, for example, use 'depth' instead of 'height'.

Measuring the Volume of a Liquid At its most basic level, volume is simply a measure of space. When measuring the volume of a liquid, sometimes referred to as capacity, the units liters (L) and milliliters (mL) are used. Devices used for this measurement include graduated cylinders, beakers, and Erlenmeyer flasks.

To know more about volume visit :

https://brainly.com/question/24189159

#SPJ1

Dmitri Mendeleev and Lothar Meyer each independently developed the periodic law in 1869. The first periodic table was made by Mendeleev, and Meyer soon after. They both suggested that certain attributes frequently recur and grouped the elements according to their mass.

what is meant by periodic law ?

According to the periodic law, when the elements are organised in order of increasing atomic number, their physical and chemical properties repeat in a regular and predictable manner. Numerous characteristics occur repeatedly. When the components are properly ordered, patterns in their characteristics become visible and can be used to forecast the properties of unknown or foreign elements just by looking at how they are arranged on the table.

Periodic Law: Its Importance

Considered one of the most crucial ideas in chemistry is periodic law. Whether consciously or unconsciously, every scientist applies periodic law when working with chemical elements, their properties, and chemical reactions. The contemporary periodic table was created as a result of periodic law.

To learn more about periodic law refer to:

https://brainly.com/question/2207821

#SPJ4

Answer: heterogeneous mixture

Explanation: The heterogeneous mixture has a non-uniform composition and has two or more phases. It can be separated out physically. Example: A mixture of sodium chloride and sand.

Because it only needs to lose one electron in order to create the next valence electron shell, the stable 3s shell.

To learn more about ionization energies refer to:

https://brainly.com/question/1445179

#SPJ4

a lab student do to response should be,  If doing so does not cause a delay in the evacuation, leave the room while removing your personal things. Observe the TA's and the lab staff's instructions.

Notify the emergency personnel of any other residents who require help leaving. Close the doors, leave the area, and dial 9-1-1 from a secure location. student can do the experiments they have learnt about in textbooks or from their professors in a scientific lab. They have a better understanding of an experiment's methodology and potential outcomes in this way. a location outfitted for scientific experimentation or for testing and analysis. a research centre. A location that allows for experimentation, observation, or practise in a particular field of study. The abbreviation lab comes from the mediaeval Latin word laboratorium.

learn more about student  here:

https://brainly.com/question/9026556

#SPJ4

A neutral atom has 42 protons and 56 neutrons mean it has no charge. The atom is Molybdenum (Mo) with atomic no. 42. And mass no. 98 in period 5 and group 6 of the periodic table.

Let us first understand the question. So the general representation of an atom that is equal to AZ X, where X is the atomic symbol of the element, A is the mass number and Z is the atomic number. Since we know that the number of protons is equal to the no. of electrons which is equal to the atomic number.  Also, we know that Mass no. is equal to the sum of Protons and Neutrons. This allows, us to find the atom in the periodic table with atomic no. 42 and mass no. 98 which is Molybdenum in period 5 and group 6 of the table.

Learn more about atoms here:

https://brainly.com/question/13654549

#SPJ4

Splicing represents how a single gene can encode more than one type of protein.

What is Splicing?

Splicing is the process of removing introns from a gene and joining the exons together. This process is necessary for the production of a functional protein. In eukaryotic organisms, genes are composed of both exons (the coding regions) and introns (non-coding regions). During splicing, the introns are removed and the exons are connected. The resulting mRNA molecule is then ready for translation into a functional protein. Splicing can be either intron-mediated or trans-splicing, depending on the type of organism and the type of gene. Intron-mediated splicing occurs in eukaryotes, while trans-splicing occurs in prokaryotes.

It is a post-transcriptional modification that allows a single gene to code for multiple proteins. In eukaryotes, gene splicing occurs prior to mRNA translation by the differential inclusion or exclusion of pre-mRNA regions. Splicing of genes is a significant source of protein diversity.

Therefore, Splicing is the correct answer.

To learn more Splicing from the link

https://brainly.com/question/13328501

#SPJ4

A single gene can encode more than one type of protein through several different mechanisms, including:

To learn more about single gene refer:

brainly.com/question/288619

#SPJ4

To determine the order of the reaction with respect to reactant A, we can perform experiments at different concentrations of A while keeping the concentration of B constant.

What are reactants?

A reactant is a substance that is consumed in a chemical reaction. In a balanced chemical equation, all reactants are listed on the left side of the equation and are consumed as the reaction proceeds. The reactant that is used up first in a reaction is called the limiting reactant or limiting reagent.

From the data provided, we see that when [A] is 1.5 M and [B] is 1.5 M, the rate of the reaction is 3.2 x 10^-1 M/s. When [A] is 3.0 M and [B] is 1.5 M, the rate of the reaction is 6.4 x 10^-1 M/s.

Since the rate of the reaction is directly proportional to the concentration of A, we can say that the order of the reaction with respect to A is 1.

To determine the order of the reaction with respect to reactant B, we can perform experiments at different concentrations of B while keeping the concentration of A constant. From the data provided, we see that when [A] is 1.5 M and [B] is 1.5 M, the rate of the reaction is 3.2 x 10^-1 M/s. When [A] is 1.5 M and [B] is 2.5 M, the rate of the reaction is 3.2 x 10^-1 M/s.

Since the rate of the reaction does not change with the concentration of B, we can say that the order of the reaction with respect to B is 0.

The overall reaction order is the sum of the order with respect to each reactant. So the overall reaction order for this reaction is 1 + 0 = 1.

Therefore, the order of the reaction with respect to reactant A is 1, the order of the reaction with respect to B is 0, and the overall reaction order is 1.

To learn more about reactants from the given link:

https://brainly.com/question/6421464

#SPJ4

Naming of the following compound is given below.
What is chemical compound?
A chemical compound is a substance composed of two or more elements in a fixed ratio. Chemical compounds can be formed when atoms of two or more elements combine chemically. Examples of chemical compounds include water (H2O), table salt (NaCl), and carbon dioxide (CO2). Compounds are usually identified by their chemical formula, which describes the ratio of atoms present.

2,5-Dibromobenzene: A compound composed of six carbon atoms arranged in a ring structure, with two bromine atoms bonded to the two carbon atoms in the center of the ring.

3,6-Dibromobenzene: A compound composed of six carbon atoms arranged in a ring structure, with two bromine atoms bonded to the two carbon atoms at either end of the ring.

1,4-Dibromobenzene: A compound composed of six carbon atoms arranged in a ring structure, with two bromine atoms bonded to the two carbon atoms located adjacent to each other in the center of the ring.

2,5-Dibromocyclohexene: A compound composed of six carbon atoms arranged in a ring structure, with two bromine atoms bonded to the two carbon atoms located across from each other in the middle of the ring.

1,4-Bromocyclohexene: A compound composed of six carbon atoms arranged in a ring structure, with one bromine atom bonded to the two carbon atoms located adjacent to each other in the center of the ring.

To know more about chemical compound click-
https://brainly.com/question/26487468
#SPJ4

The empirical formula be  the same as the actual empirical of magnesium oxide is MgO.

The empirical formula of magnesium oxide is :

The Mass of Mg = 0.297

The Mass of Magnesium  Oxide = Mass of Mg + Mass of O

0.493 g = 0.297 g + Mass of O

Mass of O = (0.493 - 0.297)g

                = 0.196g

Moles of Mg = 0.297 g Mg × 1 mol Mg / 24.3g Mg

                      = 0.012 mol of Mg

Moles of O = 0.196 g O × 1 mol O / 1 6g O

                  = 0.012 mol of O

Dividing by the smallest one :

Mg = 1

O = 1

The empirical formula is MgO.

To learn more about empirical formula here

https://brainly.com/question/5834630

#SPJ4

The cyclobutene's carbon atoms are all hybridized in the sp3 sp3 state, with the second and third carbon atoms also being in the sp state.

To learn more about hybridization refer to:

https://brainly.com/question/28468454

#SPJ4

The solar energy that has reached the entire area of the United States per hour, is 22,585,995,360,000,000 kJ of energy

To find the energy, you first need to convert the area of the United States from squared kilometers to square meters.

1 square kilometer is 1, 000, 000 so 9,158,960 square kilometers would be:

= 9,158,960 x 1, 000, 000

= 9,158,960, 000, 000 square meters

The solar energy per hour for the United States is:

=Area of the United States x energy per square meter

= 9,158,960,000,000 x 2, 466

= 22,585,995,360,000,000 kJ of energy

Find out more on solar energy at https://brainly.com/question/13446331

#SPJ1

Option (a) is correct. All isotopes of an element have nearly identical chemical behavior because chemical behavior is determined primarily by the number of protons in the element.

Isotopes can be defined as an atoms with the same number of protons but different numbers of neutrons. Isotopes share the same chemical properties but differ in mass and physical properties. The isotopes which do not emit radiation are called stable isotopes. The isotopes which do emit radiation are called radioisotopes. Like Uranium some elements can only exist in an unstable form. All the elements have isotopes. It can be defined as a form of a chemical element in which the atoms have the same number of protons and a different number of neutrons.

To learn more about Isotopes please visit:

https://brainly.com/question/364529

#SPJ4

The right responses are "solvent, solute, concentration, and solution." The components of a liquid that comprises multiple substances are referred to by various names.

To learn more about components of a liquid refer to:

https://brainly.com/question/4145571

#SPJ4

The rate of reaction in a chemical reaction is the speed at which the products are formed from the reactants. It offers some insight into the potential reaction time.

For instance, the combustion of cellulose in fire responds incredibly quickly and is complete in a split second.

H2(g)+2ICl(g) → 2HCl(g)+I2(g)

Rate of reaction  = reactant used/Time taken to consume of the reactant

rate=k[HI][ICl]

The rate of reaction, also known as reaction rate, is the rate at which reactants transform into products. It should go without saying that different chemical reactions occur at different rates. While some chemical reactions happen extremely immediately, others may take some time to reach their final equilibrium.

To learn more about reactant click here https://brainly.com/question/17096236

#SPJ4

complete question: Step 1:H2(g)+ICl(g)→HI(g)+HCl(g)(slow). Step 2 : HI(g)+ICl(g)→HCl(g)+I2(g)(fast). The reaction is carried out at constant temperature inside a rigid container. Based on this mechanism, which of the following is the most likely reason for the different rates of step 1 and step 2 ?

She needs 128.375 g of kmno4 to make the solution.

Data:

2.5 L is the volume. 0.325 M for concentration Calculate the moles of KMnO4 for potassium permanganate (Molar mass): 39 + 55 + (16 x 4) = 158 g.

Its molarity is the ratio of a molecule in meters to every liters in a solution. The solution contains both the solute and the solvent. Mass of an object, on the other hand, is the ratios of both the molecules of a component to the grams of a solvent.

The mole of material per liter of water is measured as molarity. For instance, when table salt is dissolved in water, water serves as both the solution and the solute. Sodium chloride weights 58.44 grams per mole. 58.44 grams of sodium chloride dissolve for one liters of water to form a one molecule solution, or 1M.

To know more about molarity Visit:

https://brainly.com/question/8732513

#SPJ1

The combustion of methane is an illustration of a simpler chemical transformation. Natural gas, the primary fuel used in many residential furnaces, is primarily composed of methane.

To learn more about chemical transformation refer to:

https://brainly.com/question/2667612

#SPJ4

The atomic numbers of the elements are listed in the long form periodic table. The quantity of protons in the nucleus of an element's atom is represented by the element's atomic number.

To learn more about atomic number refer to:

https://brainly.com/question/11353462

#SPJ4