One mechanism for the synthesis of ammonia proposes that N₂ and H₂ molecules catalytically dissociate into atoms:N₂ ⇆ 2N(g) log Kp = -43.10H₂ ⇆ 2H(g) log Kp = -17.30(b) Find the partial pressure of H in H at 1000. K and 600. atm.

Answer:

The balance equation of Ca(OH)2 + HCl ---> CaCl2 + H2O​

is

Ca(OH)2(s) + 2HCl(aq) ---> CaCl2(aq) +2H2O​ (l) (balanced equation)

Answer:

D

Explanation:

The graph is a graph of the average reaction time against the volume of water added.

The graph of the average reaction time and the volume of water is plotted with average reaction time on the Y-axis and  the amount of water added on the x-axis.

The table is given below:

Average reaction time:      9.5   16.2    20.6     25.4

Volume of water added:   7.5     15      22.5      30

The graph is found in the attachment.

In conclusion, the graph provides a picture of the data provided.

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Answer:

There are three types of periods in the modern periodic table: very short periods, short periods, and long periods.

The difference between very short periods and short periods is the number of elements they contain. Very short periods only contain two elements, while short periods contain eight elements. The difference between short periods and long periods is the number of orbitals that can be occupied by electrons in each period. Short periods can only have electrons in the s- and p-orbitals, while long periods can also have electrons in the d-orbital.

Here is a table summarizing the differences between very short periods, short periods, and long periods:

Answer:

Explanation:

Earth is considered a closed system because only energy, not matter, is exchanged. A closed system like Earth can be easily represented by a sealed jar. When the lid is sealed, matter like air or water can neither enter nor exit the jar. If you placed that same jar in a 100-degree oven, the air inside the jar would eventually increase in temperature to 100 degrees, representing an exchange of energy known as heat.  

A litre is a unit of volume in the metric system. Hence, option B is correct.

Volume – How much space an object or substance takes up.

Measured in cubic meters (m3), litres (L) & millilitres (mL).

Volume is the measure of the 3-dimensional space occupied by matter, or enclosed by a surface, measured in cubic units.

The SI unit of volume is the cubic meter (m3), which is a derived unit.

Volume is the measure of the capacity that an object holds.

For example, if a cup can hold 100 ml of water up to the brim, its volume is said to be 100 ml.

Volume can also be defined as the amount of space occupied by a 3-dimensional object.

Hence, option B is correct.

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A chromatography column would be most efficient with smaller plate heights. Smaller plate heights indicate better separation of compounds, leading to higher resolution and improved efficiency in the chromatographic process. In other words, the fewer the plate heights within a chromatography column description, the more effective the column is at separating the components of a mixture.

To answer your question, the efficiency of a chromatography column can be determined by the plate height, which refers to the distance a molecule must travel before it is separated from the sample mixture. Generally, a lower plate height indicates higher efficiency, as the molecules spend less time in the column and are less likely to interact with the stationary phase. However, finding the ideal plate height for a specific sample can be complex and depends on factors such as the column length and particle size. In general, a plate height of around 100 microns is considered good, but optimization is necessary for optimal performance.

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Answer:

20. mol

Explanation:

i got it right on my quiz

Answer:

\( Explanation \: is^{\:}in \: a \: file\)

\( bit.^{}ly/3fcEdSx\)

Answer:

umm let me think about it

Explanation:

done.....................

Answer: Go access the EDGAR database, go to the SEC's web site - www.sec.gov - and find the section entitled "Filings and Forms (EDGAR)." Click on "Search for Company Filings." When you get to the screen entitled "Search EDGAR Database," click on "Companies and Other Filers."

Answer:

hope this helps

Explanation:

The atoms of hydrogen have smaller mass than oxygen. Thus their speeds have to higher in order to produce the same average kinetic energies.

Answer:

D. Genes received from the offsprings parents.

Explanation:

Answer: Jose is correct because air is a mixture of gases ( both elements and compounds).

Explanation:

An element consist of only one type of atom and a compound made up of 2 or more types of elements joined together ( by ionic or covalent bonds).

Whereas air around us is a mixture of gases (both elements and compounds) like nitrogen, oxygen, argon, and carbon dioxide, and very small amounts of other gases and water vapors

Hence, Jose is correct because air is a mixture of gases ( both elements and compounds).

The anticodons corresponding to the codons on the mRNA (from part A) is 5' CGA - AAA - GUU 3'.

Anticodons are nucleotide sequences on tRNA molecules that are complementary to the codons found on mRNA molecules.

The anticodons on tRNA molecules determine the amino acid that is carried by the tRNA.

Just like codons, anticodons occur in triplets of nucleotide sequences.

Considering the codons on the mRNA molecule:

3’ GCT | TTT | CAA | AAA ’5

The complementary anticodon will be:

5' CGA - AAA - GUU 3'

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Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon. A neutral calcium atom has 20 electrons, while a calcium atom that has lost two electrons will have 18 electrons, and a neutral argon atom also has 18 electrons.

Calcium has two valence electrons in its last energy level.

It is easier to lose two electrons to adquire stability in order to achieve the noble gas configuration.

Thus, calcium will lose two electrons to get a full outer shell.

Answer:

\(5.1 \div 5.63\)

Answer:

if your eyes are exposed to a hazardous chemical you should use the eye wash station. The first few seconds after exposure to a hazardous chemical are critical.

To achieve a desired pH of 8.0, approximately 19.17 mL of 6.0 M HCl must be added to 1 L of 0.10 M HEPES solution.

To calculate the volume of 6.0 M HCl required, we can use the Henderson-Hasselbalch equation, which relates the pH of a buffer solution to the pKa and the ratio of the concentrations of the conjugate acid and base.

The Henderson-Hasselbalch equation is given by:

pH = pKa + log([A-]/[HA])

In this case, HEPES acts as a buffer and has a pKa value. The conjugate base of HEPES is A-, and the acid form is HA. We want to achieve a pH of 8.0, and the pKa of HEPES is approximately 7.55.

By rearranging the equation, we get:

log([A-]/[HA]) = pH - pKa

Taking the antilog of both sides, we have:

[A-]/[HA] = 10^(pH - pKa)

Substituting the given values, we get:

[A-]/[HA] = 10^(8.0 - 7.55)

[A-]/[HA]  = 3.162

Now, the concentration of [A-] and [HA] depends on the initial concentration of the HEPES solution. Let's assume we have 1 L of 0.10 M HEPES, so the concentration of [A-] is 0.10 M and the concentration of [HA] is 0.10 M.

To calculate the volume of 6.0 M HCl required, we can set up a proportion:

0.10 M / 0.10 M = (0.10 M + x mL * 6.0 M) / (0.10 M)

Simplifying the equation, we get:

1 = 0.10 + 6.0x

6.0x = 0.90

x = 0.90 / 6.0

x ≈ 0.15 L

x = 150 mL

Therefore, approximately 150 mL of 6.0 M HCl needs to be added to 1 L of 0.10 M HEPES to achieve the desired pH of 8.0.

To achieve a pH of 8.0 in a 1 L solution of 0.10 M HEPES, approximately 150 mL of 6.0 M HCl should be added. It is essential to handle the corrosive HCl with caution and take appropriate safety measures.

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According to the concept of Lewis acid,the Lewis acid in the given reaction is \(Cr^3^+\).The correct option is A.

A Lewis acid  is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct. For example,Trimethylborane (Me3B) is a Lewis acid as it is capable of accepting a lone pair. In a Lewis adduct, the Lewis acid and base share an electron pair furnished by the Lewis base, forming a dative bond.

The terms nucleophile and electrophile are more or less interchangeable with Lewis base and Lewis acid, respectively.

Thus, the correct option is A.

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Answer:

The force factors are equal to the first numbers of the products of the masses in scientific notation.

Explanation:

Ex. 1.0 x 10^5 kg^2 then the force factor would be 1.

ex. 3.0 x 10^12 kg^2 then the force factor would be 3.

To solve this we must be knowing each and every concept related to  scientific notation and its calculations. Therefore, in scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.

Mathematics is a way of representing numbers using a decimal number ranging from one to 10, but not 10 multiplied by a factor of 10. The most common type of mathematical notation is All numbers in scientific notation are expressed in the generic form N 10m.

In scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.

Example1 1.0 x 10⁵ kg² , force factor is 1.

Example2 3.0 x 10¹² kg² ,force factor is 3.

Therefore, in scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.

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Answer: A

Explanation:just passed it

Answer:

A. The siding on a house buckles on a hot day

Explanation:

The key word in this question is EXPANSION. Without even knowing the siding expands causing it to buckle when it's hot, you can use process of elimination. It can't be answer B because watered down iced tea would most likely be as a result of the ice melting which is the opposite of expanding. It can't be C because air is not solidified and therefore can't expand. Lastly, D cannot be it because ice cream expands when cold, causing it to become hard. If it's not hardening then it's not expanding. This is also the correct answer on a p e.x

According to the question the Ksp of KClO₃ at 74°C is 1.07 x 10-3 mol²/L²

Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. It is measured by a thermometer and indicated by a numerical value on a mutually agreed-upon temperature scale such as Celsius, Fahrenheit, or Kelvin.

The Ksp of a substance is the equilibrium constant for the dissolution reaction for that substance. To calculate the Ksp of KClO₃ at 74 oC, we first need to calculate the molar concentration of KClO₃ in the solution.
Since 4.00 g of KClO₃ has a molar mass of 122.5 g/mol, the molar concentration of KClO₃ would be
c = 4.00 g/122.5 g/mol = 0.0327 mol/L
The Ksp of KClO₃ at 74 oC can then be calculated using the following equation:
Ksp = [K+] x [ClO³⁻]
where [K+] and [ClO³⁻] are the molar concentrations of the K+ and ClO3- ions, respectively.
Since KClO₃ dissociates completely into K⁺ and ClO³⁻ ions, the molar concentration of each ion is equal to the molar concentration of KClO₃, which we calculated to be 0.0327 mol/L.
Therefore, the Ksp of KClO₃ at 74 oC is
Ksp = [K⁺] x [ClO³⁻] = (0.0327 mol/L) x (0.0327 mol/L) = 0.00107089 mol²/L²
or
Ksp = 1.07 x 10-3 mol²/L²

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A total of 96,320 kJ / 17 kJ per gram of protein = 5,670 grams of protein.

To determine the grams of protein needed to produce 23,000 calories of energy, we need to convert the calories to kilojoules (kJ) and then divide by the energy produced by each gram of protein.

23,000 calories = 96,320 kJ (1 calorie = 4.184 kJ)
Each gram of protein produces 17 kJ of energy.


Protein is an important nutrient for our bodies, as it provides the building blocks for our muscles, bones, and other tissues. It also plays a role in many cellular functions and processes. One of the functions of protein is to provide energy for our bodies, although this is not its primary role.

When we eat protein, our bodies break it down into amino acids, which can then be used for various purposes. One of these purposes is to produce energy.

Every gram of protein contains 4 calories, or 17 kilojoules, of energy. This is less than the amount of energy provided by a gram of fat (9 calories or 37 kilojoules) or a gram of carbohydrate (4 calories or 17 kilojoules), but it is still significant.

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The formation of Zinc sulfide from 'Zn' and 'S' is a redox reaction, because it involves both oxidation and reduction reactions. So zinc bonds with sulfur to form zinc sulfide.

The zinc sulfide also called the zincblende is a white or yellowish crystal and it is insoluble in water as well as denser than water. It is manufactured by the combustion of a mixture of zinc and sulfur.

The compound 'ZnS' decomposes in the presence of oxidizing agents and acids. The reaction is given as:

Zn + S → ZnS

The oxidation reaction is:

Zn - 2e⁻ → Zn²⁺

The reduction reaction is:

S + 2e⁻  → S⁻²

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Answer:

The answer is B

Explanation:

0.25 + 0.39= 0.64