9. Given the following reaction:CO (g) + 2 H2(g) CH3OH (g)In an experiment, 0.45 mol of CO and 0.57 mol of H2 were placed in a 1.00-L reaction vessel. At equilibrium, there were 0.28 mol of CO remaining. Keq at the temperature of the experiment is ________.

74.2 grams

For each mole of Al we have 26.98 grams

So, what about when we have 2.75 moles? Let's do the math:

1 mole = 26.98 grams

2.75 moles = x grams

x = 74.19 or 74.2 grams of Al

Conjugate acid-base pair is the combination of two compounds which can accept and donate hydrogen ions.

The compounds are HCI, H₂SO₄, HPO, Acetic acid, Formic Acid, HF, carbonic acid, ammonium ion, water, nitric acid.

a.

Conjugate bases of HCl is Cl⁻.

Conjugate bases of H₂SO₄ is HSO₄⁻.

Conjugate bases of HPO₄²⁻ is PO₄³⁻.

Conjugate bases of CH₃COOH is CH₃COO⁻.

Conjugate bases of formic acid is formate ion.

Conjugate bases of HF is F⁻.

Conjugate bases of carbonic acid is the bicarbonate.

Conjugate bases of ammonium ion ammonia.

Conjugate bases of water is H₃O⁺.

Conjugate bases of HNO₃ is NO₃⁻.

b.

HCl ⇄ H⁺ + Cl⁻

H₂SO₄ ⇄ 2H⁺ + SO₄²⁻

H₃PO₄ ⇄ H⁺ + PO₄³

CH₃COOH ⇄ H⁺ + CH₃COO⁻

HCOOH ⇄ H⁺ + HCOO⁻

HF ⇄ H⁺ + F⁻

H₂CO₃ + H₂O ⇄ HCO₃⁻ + H₃O⁺

Ammonia does not ionizes in water.

H₂O ⇄ H₃O⁺ + OH⁻

HNO₃ ⇄ H⁺ + NO₃⁻

c.

Strong acids: HCl, H₂SO₄, HNO₃,

Weak acids: H₃PO₄, CH₃COOH, HCOOH, HF, H₂CO₃, ammonium ion

Water is both weak and strong acid.

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To determine the Cl for NeMutl:Wt, you need to use the data from part 2 of the case study. The data is given as 1x10-10 for the Wt strain and 1x10-7 for the mutant strain. To calculate the Cl, we use the following equation: Cl = 1/[(1/ID50) - (1/LD50)]. Using this equation, we can calculate the Cl to be 3x10-3.

To determine the Cl for NeMut2:Wt, we can use the same equation. Using the data from the table in part B, the Cl for NeMut2:Wt can be calculated to be 8x10-3.Interpreting these results, we can see that NeMut1:Wt has a Cl that is roughly 3 times lower than that of NeMut2:Wt. This suggests that the mutation of NeMut1 is significantly affecting a virulence factor, while NeMut2 may not be affecting a virulence factor as significantly.

It is important to note that similar LD50 and/or ID50 values of a Wt and mutant strain does not necessarily mean that the mutation does not affect a virulence factor. This is because the LD50 and ID50 values are used to measure how much of the pathogen is needed to produce a certain effect, but other aspects of the pathogen such as the speed or rate of infection or the amount of toxin produced can still be different and affect the virulence of the strain.

Cl for NeMut1:Wt cannot be calculated from the data presented in part 2 of the case study. The given results are:|  Inoculum (LD50) |  Mortality (LD50) |  CFU/ml of blood | Wild-type   | 6.5 × 10−7    |  6.5 × 10−7      | 7.0 × 103 | NeMut1  | 1.0 × 10−10    |  6.5 × 10−7     | 3.0 × 105 | NeMut2  | 2.0 × 10−7    |  2.0 × 10−7     | 2.2 × 103 |Since the Cl cannot be calculated from the data given, the correct option is (d) Cl cannot be calculated from the data given.If the LDs0 and/or IDs0 values of a Wt and mutant strain are similar in this type of experiment, it does not necessarily mean that the mutation does not affect a virulence factor.

This is because mutations can affect different aspects of virulence, and the specific virulence factor being measured may not be impacted by the mutation.In order to determine the CI for NeMut1:Wt and NeMut2:Wt, we need to use the following formula:CI = (output ratio of mutant) / (output ratio of wild-type)Output ratio = (CFU/ml of blood) / (inoculum)Using the data from the table, we get:

Output ratio of NeMut1:Wt = 3.0 × 105 / 1.0 × 10−10 = 3.0 × 1015Output ratio of wild-type = 7.0 × 103 / 6.5 × 10−7 = 1.1 × 1010CI of NeMut1:Wt = (3.0 × 1015) / (1.1 × 1010) = 2.7 × 105Output ratio of NeMut2:Wt = 2.2 × 103 / 2.0 × 10−7 = 1.1 × 1010CI of NeMut2:Wt = (1.1 × 1010) / (1.1 × 1010) = 1Interpretation of results from question 5 above: The CI of NeMut1:Wt is much greater than 1, indicating that NeMut1 is more virulent than the wild-type strain. The CI of NeMut2:Wt is equal to 1, indicating that NeMut2 does not exhibit any significant difference in virulence compared to the wild-type strain.

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Steel is produced from pig iron through a process known as steelmaking or iron and steel production.

The pig iron obtained from the blast furnace contains high amounts of carbon, impurities, and other elements. To convert pig iron into steel, the carbon content needs to be reduced to desired levels, and impurities must be removed.One common method of steelmaking is the basic oxygen process (BOP). In this process, pig iron is placed in a vessel called a converter, where oxygen is blown through the molten metal. The oxygen reacts with the carbon and impurities, causing them to oxidize and form gases that are released. Alloying elements and desired additives can be added at this stage to achieve specific steel properties. Another method is the electric arc furnace (EAF), where an electric arc is used to heat and melt the pig iron, allowing impurities to be oxidized and removed.The advantages of using steel are numerous. Steel is strong, durable, and versatile, making it suitable for a wide range of applications. It has high tensile strength, which means it can withstand heavy loads and pressures. Steel is also resistant to corrosion, making it ideal for construction, infrastructure, and transportation projects. It is a recyclable material, contributing to sustainability and reducing environmental impact. Additionally, steel can be fabricated into various shapes and sizes, allowing for customization and flexibility in design.References:

A. Ghosh and A. Chatterjee, Ironmaking and Steelmaking: Theory and Practice, PHI Learning, 2008.

R.H. Tupkary and V.R. Tupkary, An Introduction to Modern Iron Making, Khanna Publishers, 2010.

J.R. Davis, ed., ASM Specialty Handbook: Carbon and Alloy Steels, ASM International, 1995.

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Explanation:

because the mass of an object is lighter than the weight therefore knowing the mass in which the object occupies

Explanation:

xiiiidjsjjjjsiOJSHHHINUSSOOONXXXUJJWWW

Molecules with polar bonds or specific functional groups with asymmetric vibrations are most strongly affected by infrared photons. Molecules with nonpolar bonds or symmetric functional groups that lack infrared-active vibrations are least affected.

When a photon interacts with a molecule, the degree to which the molecule is affected depends on whether the photon's energy matches the energy required to excite the molecule's vibrational modes. Infrared (IR) photons have energies that correspond to molecular vibrations, and therefore, molecules with certain characteristics are most strongly affected by them. Molecules with polar bonds or functional groups containing asymmetric stretching or bending vibrations are most strongly affected by infrared photons. Examples include water (H2O), carbon dioxide (CO2), ammonia (NH3), and various organic compounds with functional groups like carbonyl (C=O) and hydroxyl (OH). Molecules with nonpolar bonds or symmetric functional groups that lack vibrational modes in the infrared region are least affected by infrared photons. These include diatomic molecules like oxygen (O2), nitrogen (N2), and noble gases such as helium (He). Hence Molecules with polar bonds or specific functional groups with asymmetric vibrations are most strongly affected by infrared photons. Molecules with nonpolar bonds or symmetric functional groups that lack infrared-active vibrations are least affected.

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Option b is the correct answer. Nucleic acid is a type of biochemical is shown in this illustration.

The representation gave is an improved on variant of the design of a nucleotide, which is a structure block of nucleic acids like DNA and RNA. The nucleotide comprises of three parts: a sugar particle (displayed in the representation as CH2OH), a nitrogenous base (not displayed in this delineation), and a phosphate bunch (displayed in the representation as - O-P=O). The phosphate bunch is adversely charged and can shape hydrogen bonds with different nucleotides to make the foundation of the nucleic corrosive strand. The plan of nucleotides and the arrangement of the nitrogenous bases decide the hereditary code and capability of the nucleic corrosive.

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Answer:

iodine pentachloride

Explanation:

Answer:

Conduction i think

Explanation:

hope it helps

Answer:

5.5 mL

Problem #4: What change in volume results if 60.0 mL of gas is cooled from 33.0 °C to 5.00 °C? The volume decreases by 5.5 mL.

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

B

i hope this helped!

None of the above are correct.

Albert Einstein supported the use of radioactive elements for medical diagnostic purposes.

I hope this helps, good luck!

Answer:

your cool

Explanation:

owa owa owa owa owa bob

Answer:

condensation

Explanation:

In the carbon dioxide molecule has four shared pairs of electrons, there will be four covalent bonds created, hence option B is correct.

In organic chemistry, covalent bonds are far more prevalent than ionic ones. Two nuclei are simultaneously drawn to one or more pairs of electrons to form a covalent connection. Bonding electrons are those that are present between the two nuclei.

When atoms share electron pairs, covalent bonding results. Atoms create covalent bonds with one another in order to build a complete electron shell, which increases stability.

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Answer:

2 joule

Explanation:

10 gram= 0,01kg

The ball has kinetic enegry

K=1/2 *m *speed²

K=1/2 *0,01 * 400

K=2 Joule

Answer:

C6H12O6

Explanation:

C6H12O6

Answer:

D. Ultraviolet light should have a short wavelength, not a long wavelength.

Explanation:

just took the quiz on Ed

The mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

Electromagnetic spectrum is the arrangement of electromagnetic radiations in the order of increasing frequency or decreasing wavelength.

Examples electromagnetic radiations based on increasing wavelength  include;

Thus, the mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

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Answer:

The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones. It is responsible for our thoughts, feelings, memory storage and general perception of the world. The human heart is a responsible for pumping blood throughout our body

Chemical reactions like Canizzaro reaction involves  a chemical reaction which involves base-induced disproportionation of two molecules of  non-enolizable aldehyde to give a primary alcohol and a carboxylic acid while Stephen reaction involves the preparation of aldehydes from nitriles using tin(II) chloride,hydrochloric acid and quenching the resulting iminium salt with water.

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.

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Answer:

Q = -1.318 KJ

Explanation:

We will use the assumption that this solution acts like water and thus we will use the specific heat capacity of water and when converting from mL to g, we will use the conversion like we do for water.

We are told that 50 mL of HCl reacts with 100 mL of NaOH.

Thus total mass; m = 50 + 100 = 150 mL

Converting to grams gives 150 g since we have assumed that the solution behaves like water.

We are given;

Initial temperature; T_i = 21.3° C

Final temperature; T_f = 23.4° C

ΔT = 23.4 - 21.3

ΔT = 2.1°C

Formula for quantity of heat is;

Q = mcΔT

c is specific heat capacity.

We will use c = 4.184 J/g°C since the solution is assumed to behave like water.

Thus;

Q = -(150 × 2.1 × 4.184)

Q = -1317.96 J

Negative sign is used because temperature was raised and thus reaction is exothermic.

Approximation to KJ gives; -1.318 KJ

Answer: Pollutant

Explanation:

Answer:

Explanation:

The substance that could be found in air, water or soil that is harmful to humans or animals is called pollutant.

Answer:

210. g

Explanation:

SiO2 molar mass=60.09 g/mol

3.50 mol * 60.09 g/mol = 210. g

Answer:

Hair on our head reduces heat loss because air is trapped between individual hairs. To reduce heat transfers from our bodies, we can wear insulating clothing - such as gloves, scarves, hats and thermal socks - in cold weather. The more layers we wear, the more air can be trapped and the warmer we will remain.

Explanation:

have a nice day.

Answer:

680

Explanation:

Move the decimal 2 to the right.

When a number is written using only the digits of the number, that is considered standard notation. 6.8 × 10²  is converted into standard notation by shifting two decimal to the right side, then it became 680.

A form of writing a certain number, an equation, or an expression in a way that adheres to set norms is known as a standard notation. For instance, 4,500,000,000 years is how 4.5 billion years is written.

When a number is written using only the digits of the number, that is considered standard notation. Since words are not used in conventional number notation, this is the way that numbers are typically written.

The stages to writing a number in its standard form are as follows: Write the first digit of the supplied number in step one. Step 2: After the first number, add the decimal point. Step 3: Next, count how many digits there are in the supplied number after the first one and express that number as a power of 10.

Thus, the standard notation is 680.

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Answer:

Gamma rays have the highest frequency.

Explanation:

science.

A heating curve has two flat lines, or plateaus the plateau at the lower temperature represent the decrease in heating curves of a substance. option D is correct.

The heating curves are used for calculating the boiling point temperature depends on the outside atmosphere, the curve expresses how the supply temperature  depends on outside temperature.

This curve mainly represents the relationship of temperature, matter, and heat  which undergo phase transitions at melting and boiling points and assume a substance in the solid state lower its freezing point.

Therefore, the plateau at the lower temperature represent the decrease in heating curves of a substance. option D is correct.

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Answer:

Melting of a solid

I took the test

To answer this question we can use the titration formula, which is:

Ma * Va = Mb * Vb

Where:

Ma = molarity of acids

Va = volume of acids

Mb = molarity of bases

Vb = volume of bases

We have the molarity and volume of the acid, and the volume of the base, now let's add to our equation:

0.850M * 25.0 mL = 36.0 mL * Mb

But there is a small detail here, if you check the reaction you will see that the ratio is 2:1, so for every molecule of H2SO4 in a reaction, I will need 2 molecules of NaOH in the reaction so that it all can go forward, and for every NaOH, you will need 1/2 of H2SO4 to move forward in the reaction. So we will add this "2" in the equation.

(0.850M * 25.0 mL)/2 = 36.0 mL * Mb

21.25/2 = 36Mb

10.625 = 36Mb

Mb = 0.295M

Therefore, according to the titration formula, we will have 0.295 of molarity of NaOH in the reaction.

A water bath can be used to keep the temperature of the conical flask and its contents at a temperature .

This is a laboratory equipment which contains a heated source and  is used to incubate samples in water at a constant temperature over a period of time.

This is why water bath will be best used to keep the temperature of the conical flask and its contents at a temperature of 45 °C throughout the reaction.

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Answer:

The angle of the Sun is lower during the winter months and higher in the sky during the summer.

Explanation:

i took the test