if 13.5 g of co2 gas has a volume of 0.48 l at 335 k , what is its pressure in millimeters of mercury?

The de Broglie connection between both the momentum p or the wavelength of an electron (=h/p, h is Hubble constant) is used to calculate the wavelength of the an electron for a given power.

The following equation gives the kinetic energy of the an electron accelerated thru a voltage differential of V volts: where e is indeed the electron charge and 1/2 mv2 = eV (1.6x10-19 C) If you want to respond to this question, you'll need to know the electron charge as well as the Planck constant.

Yet, a speeding electron creates a shifting magnetic field, which in turn causes a changing electromagnetic current, which in turn causes a shifting magnetic field, etc. Or to put it another way, it produces an electromagnetic wave.

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Answer:

C

Explanation:

The age of an object that was once living. Hence, option C is correct.

Radioactive dating can be defined as a strategy to date the age of fossils by means of radioactive isotopes.

These methodologies (Radioactive dating) are fundamental for the application field of geologists and palaeontologists.

In conclusion, Radioactive dating refers to the techniques used to date the age of rocks and fossils by radioactive isotopes.

Information related to the age of an object that was once living is obtained from radioactive dating.

Hence, option C is correct.

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Answer:

B. bedrock structure.

Explanation:

A landform refers to a geomorphic or natural feature of the Earth's surface, which typically makes its terrain. Some examples of landforms on planet earth are mountain, plains, valley, hills and plateau.

Basically, the tectonic plates such as the oceanic and continental lithosphere interact in three (3) ways and these are; divergent, transform and convergent boundaries.

A convergent plate boundary can be defined as a boundary where two (2) plates move towards each other, usually, resulting in subduction or collision. This action often causes mountain range such as the Himalayas to form by the collision between the plate carrying Eurasia and that of India; as a result of subduction which causes a plate to be forced underneath the mantle, deep ocean trenches are formed such as the Mariana trench.

The Catskills are commonly called mountains but are actually part of the Allegheny Plateau also referred to as Appalachian Plateau. The Catskills are classified as a plateau because of their bedrock structure which is caused by a valley, continental glaciers, and erosion from various watercourse.

Additionally, the Catskills is a mountain which got its name from early Dutch settlers in the United States of America.

Answer:

Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.

Explanation:

i took the test:P

Hope this helps!

Answer:

Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.

Explanation:

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Answer:

Gravity

Explanation:

In the reaction \(NaNH_2\) NHS, the major product is likely to be an amine due to the presence of the strong nucleophile   \(NaNH_2\) .

In the reaction \(NaNH_2\) C\(NH_3\), the major product is likely to be an amine as well, since the reaction involves a strong nucleophile and a primary halide.

In the reaction CI NaOE, the major product is likely to be an alcohol, as the reaction involves a strong base and an alkyl halide.

In the reaction A \(NO_2\) NaOE, the major product is likely to be a nitro compound, as the reaction involves a strong nucleophile and an aryl halide.

Finally, in the reaction ON 4, it's difficult to determine the major product without knowing more about the reaction conditions and starting materials.

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Explanation:

2H2O -> 2H2 + O2

I'm not sure if u are expected to balance the equation so I did it just incase

the lattice energy of MgH2() is 2791 kJ/mol with a series of step when the Enthalpies of formation for calcium hydrided is given.

An article publishing charge (APC) is required of authors or research funders to cover publication costs in open access journals that do not charge subscription fees. This guarantees that everyone will be able to access your article promptly and without charge in the future.

Solution:

the lattice energy of MgH2() is :

ΔHf(−75. 3 kJ/mol )  =S+0.5D+IE+EA+U

ΔHf(−75. 3 kJ/mol )= 2791 kJ/mol

The papers published in MDPI Special Issues are of extremely high quality! When I published my research with MDPI (Energies Journal), it was a wonderful experience. Both the submission of the manuscript and the timing of publishing were excellent.

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Answer:

A. 7.56

b. 57.12

Explanation:

Hope that's right have a nice day :)

It takes 11.4 days⇒three half-lives

General formulas used in decay:  

\(\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}\)

T = duration of decay  

t 1/2 = half-life  

N₀ = the number of initial radioactive atoms  

Nt = the number of radioactive atoms left after decaying during T time  

t1/2=3.8 days

No=4.38 μg

Nt=0.55 μg

\(\tt 0.55=4.38\dfrac{1}{2}^{t/3.8}\\\\0.125=\dfrac{1}{2}^{t/3.8}\\\\\dfrac{1}{2}^3=\dfrac{1}{2}^{t/3.8}\\\\3=t/3.8\rightarrow t=3.8\times 3=11.4~days\)

Answer:

Ability to form four covalent bonds.

Explanation:

Carbon is the first member of group 14. It is essentially a nonmetal. It is a small atom which regularly exhibits tetra valency. This means that carbon is able to form four covalent bonds to four chemical species which may be the same or different each time. This leaves room for many different possible combination patterns of carbon with other chemical species.

Hence carbon forms a very large number of compounds due to its small size and its ability for form four covalent bonds to other chemical species in any bonding situation.

Answer: the ability to form four covalent bonds

Explanation:

Answer:

The percentage yields are as follows :

a) 64.28%

b) 58.03%

c) 69.46%

d) 79.31%

Explanation:

The percentage yield is the ratio of the actual yield of a product to the expected or theoretical yield expressed as a percentage.

Percent yield = actual yield/theoretical yield x 100%

a) from the question, expected yield is 68.3 g whilst the actual yield is 43.9 g

therefore,

Percentage yield = 43.9 g/68.3 g x 100%

                             =  0.64275 x 100%

                             =  64.28%

b) From the question, expected yield is 0.0722 mol while the actual yield is 0.0419 mol. Therefore

Percentage yield = 0.0419 /0.0722 x 100%

                             = 0.58033 x 100%

                             = 58.03%

c) A limiting reactant is the reactant is is completely used in a recation to form a product. That is, it is the reactant that is not in excess.

From the equation of the reaction :

CH3COOH + CH3CH2OH --> CH3COOCH2CH3 + H2O

1 mole of ethanol reacts with 1 mole of acetic acid to give 1 mole of ethyl acetate.

From the question, ethanol is the limiting reactant because it is not in excess. Hence,

4.29 mole of ethanol should produce 4.29 mole of ethyl acetate (expected yield).

However only 2.98 mol of ethyl acetate is produced (actual yield)

Percentage yield = 2.98mol/4.29 mol x 100%

                            =  0.69463 x 100%

                            = 69.46%

d) From the question, acetic acid is in excess hence ethanol is the limiting reactant

therefore from the equation of the reaction:

1 mole of ethanol reacts with 1 mole of acetic acid to give 1 mole of ethyl acetate.

0,58 mol of ethanol should produce 0.58 mol of ethyl acetate (expected yield)

But 0.46 mol of ethyl acetae was produced (actual yield)

Percentage yield = 0.46mol /0.58 mol x 100%

                             = 0.79310 x 100%

                              = 79.31%

Molecular attraction affects the amount of energy needed to create a phase change by making an inverse relationship between molecular attraction and the energy needed to create a phase change.

The weaker the attraction, the less energy is needed. Conversely, the stronger the attraction, the more energy is needed.

A low attraction molecule requires less energy to create a phase change because molecules are not strongly attached to one another. This is true for gases that have weak attraction forces, allowing them to easily change phases without the input of much energy. Medium attraction molecules, like liquids, need more energy to undergo phase changes.

Liquid molecules have stronger intermolecular forces than gases which require more energy to break apart. Therefore, it requires more energy to change the phase of liquid. 

High attraction molecules like solids have the strongest intermolecular forces. They require a large amount of energy to change phases because they need more energy to break the bonds between molecules that hold them together. Therefore, a large amount of energy is needed to create a phase change in solids.

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Answer:

0.0220 g (22 mg) of NO2.

Explanation:

To solve this type of problem, it is best to work with grams. Remember that 1 kg equals 1000 g and 1 g equals 1000 mg. The conversion for 5.26 kg of nitrogen monoxide (NO) would be:

And for 7.64 mg of oxygen (O2) is:

The next step is to find the number of moles of each reactant using its molar mass. The molar mass of NO is 30 g/mol (you can calculate the molar mass of a compound using the periodic table):

And the moles of oxygen (O2) is 32 g/mol:

The next step is to see how many moles of NO" can be produced for each reactant.

You can see in the chemical equation that 2 moles of NO produce 2 moles of NO2, so the molar ratio between them is 1:1. This means that 175.33 moles of NO reacted produce 175.33 moles of NO2.

Now, you can see that 1 mol of O2 reacted produces 2 moles of NO2, so let's see how many moles of NO2 are being produced:

You can note that the limiting reactant, in this case, is oxygen (O2) because this reactant imposes the "limit" to produce the product.

The final step is to convert from 4.776 x 10^(-4) moles of NO2 to grams using its molar mass which is 46 g/mol. The conversion will look like this:

We obtain 0.0220 g (22 mg) of NO2 from 5.26 kg of NO and 7.64 mg of O2.

If  B is reactant so the equilibrium will shift right side and if it is on product side the equilibrium will shift towards left side.

Equlibirium  shift means increased rate of conversion of substance,predicating on the change in the reaction in the first reaction.  

Three things which can cause equilibrium shifts are:

1) a change in the concentration of the components by adding or removing reactants or products.

2) a change in total pressure or volume

3) A change in the temperature of the system.

If B is from reactants side the equilibrium will shift towards right and if it is at product side it will shift towards right .

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This polynomial is in standard form because the powers of x are in descending order and there are no like terms that can be combined.

A fourth-degree polynomial with two terms in standard form can be written as:

\(ax^4 + bx^2\)

where "a" and "b" are constants and "x" is the variable raised to powers of 4 and 2.

This polynomial is in standard form because the terms are arranged in descending order of degree and the coefficients of each term are written in front of the corresponding power of x. Additionally, there are no like terms that can be combined further.

To create such a polynomial, we can choose any values for "a" and "b". For example, let's say a = 2 and b = -3. Then, the polynomial can be written as:

\(2x^4 - 3x^2\)

This polynomial is in standard form because the powers of x are in descending order and there are no like terms that can be combined.

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Answer:

galing ah spanish kami pinoy

Answer: 78.9 moles

Explanation:

4.75 x 10^25 molecules (1 mole / 6.02 x 10^23 molecules) = 78.9 moles :)

Answer:

They are just two....Ca and OH

No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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The Chilton-Colburn analogy, also known as Reynolds Analogy, provides a connection between heat transfer and mass transfer of a fluid.

Hence, the corresponding heat transfer correlation, assuming the Chilton-Colburn analogy for mass transfer is:

Sh = 0.023(Re)0.83(3e)1/3

The corresponding heat transfer correlation by Chilton-Colburn analogy is:

Nu = 0.023 (Re)0.83 (Pr)n, where n = 0.4 to 0.6.

Assuming that the Chilton-Colburn analogy holds good for the present situation, the above correlation can be used as a heat transfer correlation.

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The pair of amino acids that can form a salt bridge at physiological pH is aspartic acid and histidine. Hence the correct option is (A).

A salt bridge is formed when the carboxylic acid group (-COOH) of one amino acid donates a proton (H+) to the amino group (-NH2) of another amino acid, which becomes positively charged. This creates an electrostatic attraction between the positively charged amino acid and the negatively charged carboxylate ion of the other amino acid. At physiological pH (around 7.4), the carboxylic acid group of aspartic acid (Asp) is deprotonated and has a negative charge, while the amino group of histidine (His) is protonated and has a positive charge. Therefore, Asp and His can form a salt bridge through electrostatic attraction between the negatively charged carboxylate group of Asp and the positively charged amino group of His. The other pairs of amino acids listed do not form salt bridges at physiological pH for the following reasons:

(B) Glutamic acid (Glu) and aspartic acid (Asp) both have negatively charged carboxylate groups at physiological pH, so they repel each other and do not form salt bridges.

(C) Two cysteines (Cys) can form a disulfide bond through the oxidation of their sulfur-containing side chains, but they do not form salt bridges.

(D) Arginine (Arg) has a positively charged guanidino group at physiological pH, while tyrosine (Tyr) has a neutral hydroxyl group. They do not have complementary charges to form a salt bridge.

(E) Lysine (Lys) has a positively charged amino group, while glutamic acid (Glu) has a negatively charged carboxylate group. They have complementary charges to form a salt bridge, but the pH is too low for Glu to be deprotonated and have a negative charge. Therefore, they do not form a salt bridge at physiological pH.

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Question - Which of the pairs of amino acids can form a salt bridge at physiological pH? Select from the following options:-

(A) aspartic acid and histidine

(B) glutamic acid and aspartic acid

(C) two cysteines

(D) arginine and tyrosine

(E) lysine and glutamic acid

A mature chicken of about 10 months of age is almost always cooked by Braise or Stew cooking method.

A mature chicken, which is over 10 months old and weighing in the range of 4 to 7 pounds. Their meat is very flavorful but tougher than that of the broiler-fryers and roasters.

They are best used for stews and soups, or should be cooked slowly with a moist heat method such as simmering or braising.

The main cooking method for Mature birds should be Braise or stew,

Braising involves cooking large pieces of meat or chicken partially covered in liquid, while stewing uses smaller pieces of meat totally immersed in liquid.

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Answer:

1. Unsaturated

2. Alkanes

3. alkynes

4. gasoline and lubricating oils.

5. manufacturing plastic products

The experimental percentage yield is the ratio of the actual yield of the product of a reaction to its theoretical yield multiplied by 100.

Percentage yield of a reaction is used to study the efficiency of a chemical reaction. It is the ratio of the actual yield to the theoretical yield multiplied by 100.

The actual yield of a reaction is the experimentally obtained value and it will be less than theoretical yield which is derived from the balanced chemical equation of the reaction.

For example if 5 g be the actual yield of the product in a reaction, but the theoretical or expected yield derived from the equation be 7 g.

then the percentage yield  = 5 /7 × 100 = 71.4 %.

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Acetyl-CoA is produced by the pyruvate dehydrogenase complex, β oxidation of fatty acids and degradation of certain amino acids.

In the citric acid cycle, an ester combines with a ketone, resulting in a condensation of acetyl coenzyme A and oxaloacetic acid. In a Claisen condensation process, the carbonyl carbon of oxaloacetic acid forms a connection with the -carbon atom of acetyl coenzyme A.

An essential metabolic process that results in the creation of carbon-carbon bonds during the production of fatty acids is a version of the Claisen condensation. In the catabolism of fatty acids, a reverse Claisen condensation also takes place.

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Answer:

V= 12mL

Explanation:

you had the right idea with your Significant figures however, when we divide we see that it requires 2 significant figures as our least amount. this is because when looking at our division, 62 has 2 sig. fig. while 5.35 has a total 3. when looking at your answer we see that you had a total of 3 sig. figures. so in actuakity you had to round up to 12 and not to the tenths because the decimal makes .6 count as your third sig fig.