Fill in the blank with the correct word or phrase. Darwin proposed a new theory of how evolution works, which he called (za blank fill zis in)

\(C_{8} H_{18}\) has the highest boiling point

Define boiling point.

When a substance changes from a liquid to a gas, that temperature is known as its boiling point. The liquid's vapor pressure has now reached equilibrium with the pressure being exerted on it.

Intermolecular forces inside a molecule play a significant role on boiling point. Higher boiling temperatures are associated with molecules that have stronger intermolecular forces, greater weights, and less branching.

As the molar mass increases, the strength of the London dispersion forces between the molecules also increases, which results in an increase in boiling point. \(C_{8} H_{18}\)has the highest molar mass, therefore, it has the highest boiling point.

To learn more about boiling point use:

brainly.com/question/1530966

#SPJ1

Answer:

The balanced chemical equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.

The molar mass of CaCO₃ is 100.0869 g/mol 1. Therefore, 8.2 g of CaCO₃ is equivalent to 0.0819 moles of CaCO₃.

Since the reaction requires 2 moles of HCl for every mole of CaCO₃, 0.0819 moles of CaCO₃ will require 0.1638 moles of HCl.

The molar mass of HCl is 36.46094 g/mol 2. Therefore, 0.1638 moles of HCl is equivalent to 5.97 g of HCl.

So, you will need approximately 5.97 g of hydrochloric acid (HCl) to react with 8.2 g of calcium carbonate (CaCO₃).

Explanation:

Answer:

Two ions that produced similar colors in the flame test were Ca+2 and Sr+2. 3.

Explanation:

The colors are produced when an electron jumps to a higher level and then jump back down.

Ba2+ and Cu2+ and Sr2+ and Li+ were the pair with the similar color. Sr and Li displayed red colors, while Ba and Cu had mild greenish yellowish hues.

Why do some ions in the flame test generate colors that are similar?

The precise sizes of the potential energy jumps differ from metal to metal. As a result, the flame color of each metal will differ due to its unique spectral line pattern. The movement of the electrons in the metal ions contained in the compounds results in the hues of the flame.

The energy released by each electron when it returns to its initial condition determines the hue of the light that is produced.

To learn more about ions in the flame refer to:

https://brainly.com/question/28715571

#SPJ2

Answer:

It is Noble-gas notation

Explanation:

Just did it on Edgenuity 2020

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, the given electronic configuration represents noble-gas notation​.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

The systematic distribution of electrons in the various atomic orbitals is called its electronic configuration. The atomic number of argon is 18. The electronic configuration of argon is (Ne) 3s² 3p⁶. 1,2,3 represents the number of shells and s and represents the orbitals. The superscripts represents the number of electrons in each orbitals. The given electronic configuration represents  noble-gas notation​.

Therefore, the given electronic configuration represents noble-gas notation​.

To know more about element, here:

brainly.com/question/8460633

#SPJ2

Answer:

The answer is both molecule and an element

Hydrogen is the chemical element with the symbol H and atomic number 1. ... At standard conditions hydrogen is a gas of diatomic molecules having the formula H2. It is colorless, odorless, non-toxic, and highly combustible.

Explanation:

Answer:

bacteria, protists, and yeast.

Explanation:Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms

Answer:

Solid turns to liquid and liquid to gas

Explanation:

ice cube to water, water to carbon

The molecule that is a triglyceride is (c) CH2OH-CO-CH2OH.

Triglycerides are a type of lipid molecule composed of a glycerol backbone and three fatty acid chains.

The glycerol backbone consists of three carbon atoms, each of which can bind to a fatty acid chain. The fatty acid chains are long hydrocarbon chains with a carboxyl group at one end.

Looking at the given options, (c) CH2OH-CO-CH2OH represents a glycerol molecule. The presence of three hydroxyl groups (-OH) indicates that it is a glycerol molecule, which is the backbone of triglycerides.

However, the given molecule does not have any fatty acid chains attached to the glycerol backbone.

Triglycerides are formed when the hydroxyl groups of the glycerol molecule react with the carboxyl groups of fatty acid chains, resulting in the formation of ester bonds.

Since the given molecule lacks fatty acid chains, it is not a complete triglyceride.

Therefore, among the given options, none of the molecules provided can be identified as a complete triglyceride.

Learn more about triglyceride here:

https://brainly.com/question/5096426

#SPJ11

The statement that is true regarding beta particles is D. "Beta-particle formation is accompanied by the conversion of a neutron into a proton."

Beta particles are high-energy electrons or positrons that are emitted during certain types of radioactive decay processes. Beta decay occurs when an unstable nucleus undergoes a transformation in order to reach a more stable state. In beta-minus decay, a neutron in the nucleus is converted into a proton, releasing a beta particle (high-energy electron) and an antineutrino. The conversion of a neutron into a proton increases the atomic number of the nucleus by one.

The statement that beta particles have a mass number of 0 is incorrect. Beta particles do have mass, although they are much less massive compared to protons or neutrons. Similarly, the statement that beta particles have an atomic number of 1 is incorrect. The atomic number refers to the number of protons in an atom, and beta particles are not atoms themselves. Beta particles are high-energy particles emitted from the nucleus during beta decay.

Therefore, the only true statement regarding beta particles is that their formation is accompanied by the conversion of a neutron into a proton, which leads to an increase in the atomic number of the nucleus. Therefore, Option D is correct.

which of the statements regarding beta particles are true?

A. beta particles have a mass number of 0.

B. beta-particle formation is accompanied by the conversion of a proton into a neutron.

C. beta particles have an atomic number of 1.

D. beta-particle formation is accompanied by the conversion of a neutron into a proton.

Know more about beta particles here:

https://brainly.com/question/24312947

#SPJ8

In spectroscopy, the term "wavenumber" is used to express the frequency of electromagnetic radiation. It is inversely related to wavelength and is defined as the number of waves per unit of space.

The term "wavenumber" is used to characterise a wave's spatial frequency. It is frequently used to determine the frequency of electromagnetic radiation in spectroscopy. The number of waves per unit distance is known as a wavenumber, and it is commonly given in reciprocal centimetres (cm1) or inverse metres (m1).

The wavenumber is represented by the x-axis in an infrared (IR) spectrum, and the % transmission or absorption of light is shown by the y-axis. In the IR spectrum, wavenumber and photon energy are closely connected. More energetic vibrations or chemical transitions are indicated by higher wavenumbers, which are correlated with higher energy levels. Lower wavenumbers, on the other hand, signify lower energy levels and less vigorous molecular movements.

Learn more about wavenumber here:

https://brainly.com/question/31978670

#SPJ11

Answer:

Temperature

Agitation

Particle size

Explanation:

Answer:

Examples of codominance in animals include speckled chickens, which have alleles for both black and white feathers, and roan cattle, which express alleles for both red hair and white hair. Codominance is also seen in plants.

This indicates that the system's energy drops while the energy of the environment grows. As a result, the ultimate temperature is projected to be greater than the beginning temperature of 28 degrees Celsius.

The process sends heat into the environment since it is exothermic. The heat produced by the reaction is transferred to the surrounding environment, raising the temperature.

This is due to the fundamental rule of thermodynamics, which states that energy cannot be created or destroyed, but only moved from one form to another. In this case, the energy released by the reaction is transferred to the surrounding environment as heat energy, causing the temperature to rise.

Find out more on decomposition here: https://brainly.com/question/14608831

#SPJ1

The gram formula weight of CH₂O is 30.026 g/mol.

To find the number of atoms, we can count the subscript of the element. Therefore, Mg contains 1 atom and Cl contains 2 atoms.

Compound Formula: CH₂O
Element: C
#of Atoms: 1
Element: H
#of Atoms: 2
Element: O
# of Atoms: 1
gram formula weight (g): Let's calculate it.

First, we need to find the atomic masses of each element.

Gram formula weight (g): To calculate the gram formula weight of a compound, we need to determine the atomic weights of each element and multiply them by the number of atoms present in the compound.

Carbon: 12.01 g/molHydrogen: 1.008 g/molOxygen: 16 g/mol

Therefore, the gram formula weight is:

\($$\mathrm{gfw} = \mathrm{C} \cdot 12.01 + \mathrm{H} \cdot 1.008 + \mathrm{O} \cdot 16$$$$\)

= \(12.01 + 2.016 + 16$$$$\)

= \(30.026\;g/mol$$\)

Therefore, the gram formula weight of CH₂O is 30.026 g/mol.

Know more about   atomic masses    here:

https://brainly.com/question/30390726

#SPJ8

While NADPH is necessary for the synthesis of several organic compounds, ribose 5 phosphate is required for the synthesis of nucleic acid. The whole oxidation of glucose happens in the cytosol via the pentose phosphate route, which generates NADPH and CO2 but not ATP.

Are biosynthetic reactions dependent on ribose-5-P?

If ribose-5-P is not required for biosynthetic processes but NADPH is.

What results from the reaction of ribulose with glucose-6-phosphate?

In this process, a single molecule of glucose-6-phosphate breaks down into two molecules of NADPH and one molecule of ribulose-5-phosphate in the presence of a water molecule and NADP+.

To know more about Pentose Phosphate visit:-

brainly.com/question/13264777

#SPJ4

Ribulose 5-phosphate - 2 NADPH + 2 H+ + CO Glucose 6-phosphate - 2 NADP+ + H2O is the overall result for this process.

Here are the eight responses: NADPH is produced via the following reactions: reaction 1 transforms sugar 6-phosphate into D-glucono-1,5-lactone 6-phosphate; reaction 2 creates 6-phospho-D-gluconate; reaction 3 creates ribulose 5-phosphate; and reaction 4.

The five-carbon sugar ribose is referred to as pentose, while nicotinamide adenine phosphate, or NADPH, is referred to as phosphate in the name of the pentose phosphate pathway.

To know more about nicotinamide visit:

https://brainly.in/question/6103440

#SPJ4

Answer:

Explanation:

1. In a titration, a 25cm3 sample of nitric acid, HNO3, was used to react with 100cm3 of 0.50 mol/dm3 sodium hydroxide (NaOH) solution.

A) Calculate the number of moles of sodium hydroxide used.

the NaOH has 0.5 moles each liter, so 10 ml has 0.05 moles

B) Calculate how many moles of nitric acid react.

1 mole of HNO3 REACTS WITH ONE MOLE OF NAOH

SINCE NAOH WAS 0.05 MOLES, HNO3 WAS 0.05 MOLES

C) Calculate the concentration of nitric acid in mol/dm3.

THESE MOLES OF HNO3 WERE IN 25/1000 L OR 25x10^-3L

SO THE CONCENTRATION OF HNO3 IS

0.05 MOLES/ (25X10^-3) = 2MOLES/LITER

CHECK

2 MOLES/LITER HAS 0.2 MOLES IN 100 ML AND 0.2/4=0.05 MOLES IN 25 ML

Answer:

26

Explanation:

Given parameters:

Number of neutrons  = 14

Unknown:

Mass number  = ?

Solution:

The mass number of an atom is the sum of protons and neutrons in the atom.

 mass number = number of protons + number of neutrons

Since the atom here is magnesium, number of protons is 12

Mass number = 14 + 12  = 26

a. Consistency is a term that matches the description: The agreement between several measurements of the same quantity.

b. Density matches the description: Ratio between the mass and volume of a substance.

c. Outlier matches the description: In a series of measurements of the same quantity, one that is significantly different from the others.

d. Mean matches the description: Mathematical value reported when a quantity is measured multiple times.e. Immiscible is a term describing two liquids that do not mix together.

Definition: Immiscibility is the property of not being miscible. When two or more liquids are not able to form a homogeneous solution when combined, they are immiscible. The term "miscible" refers to the property of being mixed. Therefore, immiscible liquids cannot be mixed together or dissolved in one another.

Limiting reagent (also known as limiting reactant) is a chemical reaction term that refers to the substance that limits the quantity of product that can be formed in a chemical reaction. It is the substance that is entirely consumed first, preventing the other reactants from reacting further. The amount of product generated is determined by the quantity of the limiting reagent. In a chemical reaction, the quantity of the product produced is determined by the limiting reactant, and the rest of the excess reagents will remain unchanged.

To learn what is limiting reagent : https://brainly.com/question/26905271

#SPJ11

The  tendency for water molecules to be attracted and stick to other substances is called adhesion.

There are two forces of attraction that exists between molecules of substances.

The two forces of attraction are as follows:

Cohesion - this is the force of attraction that exists between molecules of the same substance, for example between water molecules.

Adhesion - this is the force of attraction between molecules of the different substances, for example water molecules and glass.

Therefore, the tendency for water molecules to be attracted and stick to other substances is called adhesion.

In conclusion, the forces of attraction between molecules are cohesion and adhesion.

Learn more about cohesion and adhesion at: https://brainly.com/question/18041818

#SPJ4

In the chemical reaction between Fe(II) ions and dilute sulfuric acid when hydrogen peroxide is added Fe(II) gets converted to Fe(III) ,on retaining mixture and adding NaOH precipitate of ferric hydroxide is obtained.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

Learn more about chemical reactions,here:

https://brainly.com/question/14929452

#SPJ1

The structure for a compound with molecular formula C₇H₁₄O₂ is CH₃-CH₂-CH₂-C(=O)-O-CH(CH₃)₂ i.e. isopropyl butyrate.

From the empirical formula  C₇H₁₄O₂, the degree of unsaturation obtained = 7 - 14/2 + 1 = 1

Looking at the IR spectra, the significant conclusions can be made is there is a carbonyl peak at ~1750 cm⁻¹, which can be an ester or a ketone (can't be a carboxylic acid, since the acidic -OH peak is missing, neither it can be an aldehyde, since the corresponding aldehyde C-H peak is missing). That alone fulfils the degree of unsaturation.

13C NMR suggests that there are 6 different chemical shifts with one peak at just higher than 20 ppm (most likely -CH₃ or -CH₂) is unusually higher than other (almost double in height). This indicates that 2 carbons appear in the same position, most likely because of their placement in the same chemical environment or they are chemically equivalent. Peak at >170 ppm clearly depict the carbonyl quarternary carbon and the obe close to 70 ppm is a tertiary (-CH) carbon.

1H NMR suggests that there is no aromatic proton involved since the ~7.0-7.5 ppm region is empty. Looking at the peaks at ~1.1 ppm with integration 6 suggests 2 doublets overlapping with each other, most likely belonging to the two chemically equivalent carbons. The chemical shift and integration value of 6 indicates each set having a -CH3 unit with both being equivalent. Since, each -CH₃ appears as a doublet, so neighbouring proton count being 1, it should be an isopropyl group i.e. -CH(CH₃)₂. Another triplet at less than 1.0 ppm, is undoubtedly a -CH₃ triplet (neighbouring proton count 2), which should be attached to a -CH₂.

So, till now, we have a carbonyl (C=O), an isopropyl group [-CH(CH₃)₂], a CH₃CH₂- moiety. From the empirical formula,  C₇H₁₄O₂, leftover unit is -CH₂O. So, that can be an -CHOH or a -CH₂ and an -O- (being part of the carbonyl i.e. an ester). Looking at the chemical shift regions in 1H, usual 3.5-4.0 ppm region characteristic area for a -OH doublet is absent. So, the O has to be part of the ester with the -CH₂ being attached to the CH₃CH₂-moiety.

So, putting the pieces together, we can have two different esters possible.

One being CH₃-CH₂-CH₂-C(=O)-O-CH(CH₃)₂ ----(A)

or the other possibility (CH₃)2CH-C(=O)-OCH₂-CH₂-CH₃ -----(B)

Looking at the proton NMR shift, this can be resolved easily. For option B, the CH2 protons adjacent to the highly electron withdrawing ester O, should be highly deshielding and should appear at the highest chemical shift among all protons with a multiplicity of a triplet. But in reality, the peak at ~5.0 ppm appears as a multiplet with integration value of 1, which is more corresponding to the expected isopropyl -CH (single proton, with a septet multiplicity).

Hence, the final proposed structure is CH₃-CH₂-CH₂-C(=O)-O-CH(CH₃)₂ i.e. isopropyl butyrate

Learn more about NMR spectra from the link given below.

https://brainly.com/question/14174167

#SPJ4

Answer and Explanation:

When methane (CH4) and chlorine (Cl2) react, a substitution reaction takes place. Specifically, the reaction is a halogenation reaction, in which one or more hydrogen atoms in the methane molecule are replaced by chlorine atoms. The reaction can be represented by the following equation:

CH4 + Cl2 → CH3Cl + HCl

In this equation, CH3Cl represents chloromethane, which is a type of organochlorine compound. The reaction is typically initiated by ultraviolet (UV) light or heat, and it proceeds through a series of free radical chain reactions. The products of the reaction are typically a mixture of chloromethane and hydrogen chloride (HCl) gas.

The equation for the response between sodium hydroxide (NaOH) and magnesium nitrate (Mg(NO3)2) is: 2 NaOH (aq) + 2 Mg(NO3)2 (aq) → 2 Mg(OH)2 (s) + 3 NaNO3 (aq).

If the adjustment of interior energy (E) of a framework is positive, it implies that the response is exothermic and heat is let out of the framework. This response is exothermic in light of the fact that the last state has a lower complete energy than the underlying state because of the development of the strong magnesium hydroxide encourage and the arrival of intensity. The extent of the adjustment of inward energy relies upon how much reactants and the circumstances under which the response happens.

The response between sodium hydroxide (NaOH) and magnesium nitrate (Mg(NO3)2) is adjusted as: 2 NaOH (aq) + 2 Mg(NO3)2 (aq) → 2 Mg(OH)2 (s) + 3 NaNO3 (aq). On the off chance that the adjustment of inward energy (E) of a framework is positive, it implies the response is exothermic and heat is delivered. This implies that the last condition of the framework has lower all out energy than the underlying state. The development of strong magnesium hydroxide hasten and the arrival of intensity add to this reduction in energy. The extent of the adjustment of energy relies upon how much reactants and response conditions.

To learn more about chemical reaction, refer:

https://brainly.com/question/14866185

#SPJ4

The complete question is:

Write the equation for the chemical reaction for Sodium Hydroxide Reacts With Magnesium Nitrate To Form Magnesium Hydroxide (MW = 58.3 G/Mol) Precipitate And Sodium Nitrate. NaOH (Aq) + Mg (NO_3)_2 (Aq) Rightarrow Mg(OH)_2 (S) + NaOH_3 (Aq) Balance The Reaction. 2 NaOH (Aq) + 2 Mg(NO_3)_2 (Aq) Rightarrow 2 Mg(OH)_2 (S) + 3 NaNO_3 (Aq) If The Change In The Internal Energy, E, Of A System Is Positive.

Answer:

11111

Explanation:

1110001001

Answer:

37,818.67 m3

Explanation:

The pressure a gas will exert on a container is inversely proportional to the volume of the gas. According to Boyle's law, at a constant temperature, the pressure of a gas is inversely proportional to its volume. The law can be mathematically represented thus:

   P1V1 = P2V2

In this case, P1 = 101.3 kPa, V1 = 28,000 m3, P2 = 75 kPa, V2 = ?

V2 = P1V1/P2

         =    101.3 x 28,000/75

                = 37,818.67 m3

Hence, the new volume of the air inside the cabin after pressurizing would be 37,818.67 m3.

Answer:

The heat required to raise the temperature of 12g of water from 16 C to 21 C is 60 cal.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Replacing:

Q= 4.186 \(\frac{J}{g*C}\) *12 g *5 °C

Solving:

Q=251.16 J

Since 1 J is equal to 0.2388 cal, then the following rule of three can be applied: if 1 J is equal to 0.2388 cal, then 251.16 J to how many cal are?

\(cal=\frac{251.16 J * 0.2388 cal}{1 J}\)

cal= 59.98 ≅ 60

The heat required to raise the temperature of 12g of water from 16 C to 21 C is 60 cal.

The calorimeter measures the transferred heat of the system. 60 cal is heat is required to raise the temperature of water from 16 to 21 degrees celsius.

Heat is the product of the mass, specific heat, and the change in the temperature of the system.

Heat exchanged by the system is calculated as:

\(\rm Q = \rm m c \Delta T\)

Where,

Mass (m) = 12 g

Specific heat (c) = 4.186

Change in temperature = 5 degrees celsius

Substituting values in the equation:

\(\begin{aligned} \rm Q &= 12 \times 4.186 \times 5\\\\&= 251.16 \;\rm J\end{aligned}\)

Converting joules into cal:

\(251.16 \times 0.2388 \;\rm cal = 60 \;\rm cal\)

Therefore, the heat required is option b) 60 cal.

Learn more about the heat here:

https://brainly.com/question/13507243

The main intermolecular forces that act between a water molecule and a hydrogen peroxide (H2O2) molecule are hydrogen bonding and dipole-dipole interactions.

Hydrogen bonding occurs between the hydrogen atom in the water molecule and the oxygen atom in the H2O2 molecule. This is because both molecules have polar covalent bonds, which result in partial charges on their atoms.

Hydrogen bonding is a type of dipole-dipole interaction, which occurs between two molecules with permanent dipoles. The oxygen atom in the water molecule is partially negative, while the hydrogen atoms are partially positive, creating a dipole.

The oxygen atoms in the H2O2 molecule are also partially negative, resulting in another dipole. These dipoles interact, leading to dipole-dipole interactions. These intermolecular forces help to hold the water and H2O2 molecules together, enabling them to mix and interact with each other.

For more questions like Hydrogen bonding click the link below:

https://brainly.com/question/13677258

#SPJ4

So, unit of volume is a derived unit.

the rate constant increases because the reactions are faster. The alkali metals lithium, sodium, and potassium react violently with water, The reaction becomes more move from top to bottom down.

Due to its strong reactivity, potassium creates this gas the fastest, leading to the violent explosion. Because sodium and lithium have lesser reactivities than other elements (lithium being the lowest), their reactions aren't quite as explosive. Similarily, 53/20 x 250/1000 = 0.6625g of anhydrous sodium carbonate is needed to make a 250 ml solution of N/20. Therefore, 0.6625g of anhydrous sodium carbonate needs to be dissolved in 250 ml of distilled water to produce a N/20 solution.and potassium react violently with water, The reaction becomes more explosive as you move from top to bottom down.anhydrous sodium carbonate is needed to make a 250 ml solution of N/20. Therefore.

learn more about sodium  here:

https://brainly.com/question/29327783

#SPJ4