a cook puts 9.00 g of water in a 2.00-l pressure cooker that is then warmed to 5008c. what is the pressure inside the container?

Answer:

The 2 beakers of water will have different boiling points because the boiling point of water  is a physical property and the property is independent of the amount of water.

Explanation:

Got 100 on my test

Answer:

5.12x10¹¹ millimeters

Explanation:

Milli is a prefix used in science and engineering to decribe the number as the exponent x10⁻³. In the prefix kilo, the number is at the exponent x10³.

5.12x10⁵ kilometers are:

5.12x10⁵ kilometers * (1000m / 1km) = 5.12x10⁸ meters

5.12x10² meters * (1m / 1000millimeters) = 5.12x10¹¹ millimeters

Answer:

d

Explanation:

The manufacture of drugs and treatments, as well as the research and development of novel drugs that can benefit people in various ways and treat a variety of ailments, diseases, and pains, are the primary functions of medicinal chemistry. The correct option is D.

Our basic needs of food, clothes, shelter, health, energy, and pure air, water, and soil are all met by chemistry. Chemical technologies improve our quality of life in many ways by offering fresh approaches to issues with health, resources, and energy use.

We can understand molecules as the fundamental components of everything thanks to chemistry. It also helps us understand the composition, structure, and properties of materials. It aids in the teaching of the Earth, food, materials, the human body, and energy to kids.

Thus the correct option is D.

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A first-order reaction is 81omplete in 264s.The half-life for this reaction (i) t 1/2 = =3.465×10 −3 s.to reach 95% Completion = 285 s.

To measure reaction rates, chemists initiate the reaction, measure the concentration of the reactant or product at different times as the reaction progresses,

For a 0-order response, the mathematical expression that may be employed to determine the half of life is: t1/2 = [R]0/2k. For a first-order reaction, the half of-existence is given by: t1/2 = zero.693/ok. For a 2d-order response, the method for the half-life of the response is: 1/okay[R]0

The 1/2-life of a response (t1/2), is the quantity of time needed for a reactant concentration to lower via half of compared to its initial awareness. Its software is used in chemistry and medicine to are expecting the awareness of a substance over time

Half of the lifestyles is the time required for exactly 1/2 of the entities to decay   50%.

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The internal atomic structure of a mineral plays an essential role in determining the physical and chemical characteristics of the mineral.

It is this unique arrangement of atoms that allow a mineral to assume a particular form and react in certain ways. These structural features can be found in the orientation of an atom's electrons, atoms bonded together, and how the different elements in a particular mineral share electrons. By studying the number and types of elements that are present in a mineral, scientists can gain insight into its atomic structure.

A mineral’s atomic structure affects many of its physical characteristics, such as color, density, hardness, and cleavage. A mineral's atomic structure also plays a role in how it will react chemically with other compounds.

This reaction is determined by the arrangement of the electron orbitals, which in turn affects how it will form bonds with other compounds. In other words, a mineral's behavior will depend on the way its electrons interact with the electrons of other substances. By studying a mineral's atomic structure, scientists can better understand its chemical and physical properties.

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Correct question is :

the internal atomic structure of a mineral most likely determines the mineral's. explain.

When sulfuric acid reacts with sodium hydroxide, it undergoes a neutralization reaction to produce sodium sulfate and water. The balanced chemical equation for this reaction is: H2SO4 + 2NaOH → Na2SO4 + 2H2O From the balanced chemical equation, we can see that 1 mole of sulfuric acid reacts with 2 moles of sodium hydroxide.

Therefore, if we have 0.75 moles of sodium hydroxide, we would need half as many moles of sulfuric acid, which is 0.375 moles. To determine the mass of sulfuric acid required, we need to use its molar mass, which is 98.08 g/mol. Therefore, the mass of sulfuric acid required would be: 0.375 mol x 98.08 g/mol = 36.78 g So, 36.78 grams of sulfuric acid would be required to react with 0.75 moles of sodium hydroxide. It's important to note that handling sulfuric acid and sodium hydroxide requires caution, as they are both highly corrosive and can cause severe burns and damage to the eyes and skin. Proper safety precautions should be taken when handling these chemicals.

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O2- Option B is correct

Explanations:

Calcium atom is a group 2 elements that gives out two electrons in order to form a stable configuration and a Ca2+ ion. These two electrons are transferred to an atom that required two electrons to complete its outer shell.

Since oxygen required 2 electron to attain its octet configuration, hence they can easily accepts the two electrons from calcium atoms to form CaO which is composed of Ca2+ and O2- ions in the ratio of one Ca2+ ion to one O2− ions.

Answer:

6FCRXCTV

Explanation:

Answer:

b

Explanation:

a p e x

The important properties of RNA polymerase from E. coli are It reads the DNA template from its 3' end to its 5' end during RNA synthesis and It uses a single strand of dsDNA to direct RNA synthesis. It is composed of five different subunits. SO, Option D, A and B are correct.

It is a multisubunit enzyme that contains many functional regions that are critical for the synthesis of RNA from a DNA template.The RNA polymerase of E. coli is a complex enzyme that has a number of important properties. The RNA polymerase is composed of five different subunits that are arranged in a holoenzyme configuration.

This holoenzyme is responsible for the recognition of promoter sequences on the DNA template and the subsequent initiation of RNA synthesis. RNA polymerase from E. coli reads the DNA template from its 3' end to its 5' end during RNA synthesis. This is in contrast to DNA polymerase, which reads the DNA template from its 5' end to its 3' end during DNA replication.

RNA polymerase from E. coli uses a single strand of dsDNA to direct RNA synthesis. The enzyme recognizes the template strand and reads it in the 3' to 5' direction, synthesizing the RNA strand in the 5' to 3' direction. This process is called transcription.

Therefore, Option A,B, and D are correct.

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The rate of a reaction is increased by a factor of about 2 to 3 times if the temperature of the reaction is increased from 40°C to 80°C.

The rate of a chemical reaction is the speed at which it occurs. The amount of the reactant that is transformed into the product per unit time is the reaction rate. The rate of reaction is influenced by a variety of factors, including concentration, temperature, and surface area. For most chemical reactions, raising the temperature by ten degrees Celsius roughly doubles the reaction rate. This is referred to as the Arrhenius equation's temperature dependence of reaction rates.

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Answer:

Drainage basin, also called catchment area, or (in North America) watershed, area from which all precipitation flows to a single stream or set of streams. ... The boundary between drainage basins is a drainage divide: all the precipitation on opposite sides of a drainage divide will flow into different drainage basins.

Explanation:

just looked it up

Answer:

d = 20.89 g/cm³

Explanation:

Given data:

Length of block = 4.20 cm

width of block = 3.80 cm

Height of block = 5.40 cm

Mass of block = 1800 g

Density of block = ?

Solution:

First of all we will calculate the volume.

V = l×w×h

V = 4.20 cm ×3.80 cm× 5.40 cm

v = 86.18 cm³

Density:

d =m/v

d =1800 g/ 86.18 cm³

d = 20.89 g/cm³

The molarity of a solution is given by the following formula:

Replace for the given values in the equation and find the molarity:

It means that the molarity of the solution is 2.25M.

Answer:

a. 53.5 g/mol

b. 80.06 g/mol

c. 133.33 g/mol

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

a. NH₄Cl

b. NH₄NO₃

c. AlCl₃

Step 2: Find masses

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Al - 26.98 g/mol

Molar Mass of Cl - 35.45 g/mol

Step 3: Calculate compound masses

Molar Mass of NH₄Cl - 14.01 g/mol + 4(1.01 g/mol) + 35.45 g/mol = 53.5 g/mol

Molar Mass of NH₄NO₃ - 2(14.01 g/mol) + 4(1.01 g/mol) + 3(16.00 g/mol) = 80.06 g/mol

Molar Mass of AlCl₃ - 26.98 g/mol + 3(35.45 g/mol) = 133.33 g/mol

Answer: The volume of product formed is 0.26 L

Explanation:

\(\text{Moles of solute}=\frac{\text{given mass}}\times{\text{Molar Mass}}\)    

\(\text{Moles of} H_2=\frac{0.02g}{2g/mol}=0.01moles\)

\(2H_2(l)+O_2(l)\rightarrow 2H_2O(g)\)

As \(O_2\) is the the excess reagent, \(H_2\) is the limiting reagent as it limits the formation of product.

According to stoichiometry :

2 moles of \(H_2\) give = 2 moles of \(H_2O\)

Thus 0.01 moles of \(H_2\) will give =\(\frac{2}{2}\times 0.01=0.01moles\)  of \(H_2O\)

According to ideal gas equation:

\(PV=nRT\)

P = pressure of gas = 101.325 kPa = 1 atm

V = Volume of gas = ?

n = number of moles = 0.01

R = gas constant =\(0.0821Latm/Kmol\)

T =temperature =\(40^0C=(40+273)K=313K\)

\(V=\frac{nRT}{P}\)

\(V=\frac{0.01mol\times 0.0821L atm/K mol\times 313K}{1atm}=0.26L\)

Thus the volume of product formed is 0.26 L

Answer:

yes the answer is c

Explanation:

The step in a chemical reaction that defines the pace (or rate) at which the entire reaction occurs is known as the rate-determining step.

Thus, The rate-determining step is comparable to the funnel's neck. The breadth of the funnel's neck, not the pace at which water is poured into it, limits or determines how quickly water flows down a funnel.

The sluggish step of a reaction controls the rate of a reaction, much like the funnel's neck.

Not all reactions have rate-determining stages, and those that do only have them if one of their steps is noticeably slower than the others.

Thus, The step in a chemical reaction that defines the pace (or rate) at which the entire reaction occurs is known as the rate-determining step.

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Answer:

D!

Explanation:

Roundified as in a cylinder. A cylinder needs to be roundified and this is the most Roundified one, Their for this is the answer!

Hope you pass!

Answer:

D

Explanation:

Swirling the contents during a reaction to help mixing

It's a mixture.

Because the constituents aren't in any fixed ratio.

Molarity is the concentration of a solution stated as the number of moles of solute per liter of solution, whereas molality is the concentration expressed as the number of moles of solute per kilogram of solvent.

Because molality is unaffected by changes in volume brought on by changes in temperature and pressure, it is employed in examinations of collinear characteristics, which is crucial in figuring out how solutes affect these qualities. Molarity is a measure of the concentration of a solution and is defined as the number of moles of solute present per liter of solution. It is denoted by the symbol "M" and is expressed in units of moles per liter (mol/L). Molarity is used to describe the amount of a solute that is dissolved in a solvent, where the solvent is usually water. This measurement is important in many chemical reactions and is used to calculate the number of reactants and products present in a solution. Molarity can be calculated by dividing the number of moles of solute by the volume of the solution in liters. It is a commonly used unit in chemistry and is one of the fundamental concepts in stoichiometry.

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Answer:

The lower the temperature, the lower the pressure inside of the sphere. If the exact values were plotted out, a linear relationship would be apparent. Extrapolating this line to the point where there would be no pressure yields absolute zero, which is about -273.15 degrees Celsius.

Explanation:

Answer:

17)c: the reactivity of a metal.

Explanation:

Answer:

I think the answer Is 0.636 mol of CO2!

The percent yield of the reaction has been 74.47%.

The balanced chemical equation for the reaction has been:

\(\rm 2\;H_2\;+\;O_2\;\rightarrow\;2\;H_2O\)

(a) The theoretical yield can be calculated as:

The theoretical yield of water has been:

1 mole of oxygen produces = 2 moles of water

0.1562 moles of oxygen produces = 0.1562 \(\times\) 2

= 0.312 moles of water.

The mass of water has been = moles \(\times\) molecular weight

The theoretical yield of water = 0.312 \(\times\) 18 grams

The theoretical yield of water = 5.616 grams.

(b) The limiting reactant has been the one whose concentration has been in a lesser quantity for the complete utilization of other reactants.

According to the reaction, for the complete utilization of 2 moles of Hydrogen, 1 mole of oxygen has been used.

The moles of 5 grams Hydrogen:

Moles = \(\rm \dfrac{weight}{molecular\;weight}\)

Moles of hydrogen = \(\rm \dfrac{5}{1}\)

Moles of hydrogen = 5 mol.

Moles of Oxygen = \(\rm \dfrac{5}{32}\)

Moles of oxygen = 0.1562 mol.

For the complete utilization of 5 moles of hydrogen 2.5 moles of oxygen has been required.

Since the oxygen has been present in a lesser quantity, the oxygen has been the limiting reactant.

(c) The consumption of 0.1562 moles of Oxygen has required 0.312 mol of Hydrogen. The hydrogen has been present in a higher quantity than required.

Thus. hydrogen has been the excess reactant.

(d) The remained excess reactant has been:

Remained = Total - consumed

Remained = 5 - 0.312

Remained = 4.68 mol.

The excess reactant has been 4.68 mol extra than required.

(e) The theoretical yield of water has been:

1 mole of oxygen produces = 2 moles of water

0.1562 moles of oxygen produces = 0.1562 \(\times\) 2

= 0.312 moles of water.

The mass of water has been = moles \(\times\) molecular weight

The theoretical yield of water = 0.312 \(\times\) 18 grams

The theoretical yield of water = 5.616 grams.

The actual yield of water has been 4.2 grams.

The percent yield of water = \(\rm \dfrac{Actual\;yield}{Theoretical\;yield}\;\times\;100\)

The percent yield of water = \(\rm \dfrac{4.2}{5.616}\;\times\;100\)

The percent yield of water = 74.74 %

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Answer:

a- 5.616

b- Oxygen

c- hydrogen

d- 4.68 extra

e- 74.47%

I hope this helps! Cheers ^^

Landslides happen when it rains making the ground heaver and more likeable to a landslide.

Below is an example of the open-chain structure (as a Fischer projection) of 2-deoxy-D-glucose.

The Fischer projection should be aligned vertically, with the carbon atoms at the top and bottom and the oxygen atoms on the left and right. The chiral carbon atoms should be labeled and any hydrogens attached to them should be explicitly shown. Note that bonds to other hydrogens should not be shown.

O O | /| | / | | H | H | H | | H | | H | | H | H | H | | H | |H | C--C--C--C--C

The diagram provided is a Fischer projection of 2-deoxy-D-glucose. The vertical alignment of the carbon atoms at the top and bottom, and the oxygen atoms on the left and right is correct. The chiral carbon atoms should be labeled and any hydrogens attached to them should be explicitly shown. Note that bonds to other hydrogens should not be shown.

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Answer(s):

::: (\_(\ Hope

*: (=' :') this

•.. (,('')('') helped :)

Answer:A.) Mechanical and nuclear

Explanation:

iv,e got nuthing sorry im only a kid i have to leared that yet

answer:

B) Radiant and Thermal

explanation:

  "In a flashlight, chemical energy in the batteries is converted to electrical energy when the circuit including the batteries, switch and light bulb is completed. The electrical energy is converted to light (electromagnetic / radiant energy) and some heat (thermal energy) by the light bulb." -https://www.crosbyisd.org/cms/lib6/TX02216626/Centricity/Domain/392/6_9C-EnergyFormsConversions.pdf

The free energy change, ΔG, is approximately -0.0198 kJ/mol to one decimal place.

To calculate the free energy change, ΔG, we can use the equation:

ΔG = -RT ln(K)

where ΔG is the change in Gibbs free energy, R is the gas constant (8.314 J/mol·K), T is the temperature in Kelvin, and K is the equilibrium constant.

In this case, we are given the partial pressures of CH3OH, P(CH3OH) = 110.0 mmHg and P(CH3OH) = 14.00 mmHg, respectively.

First, we need to calculate the equilibrium constant, K, using the ratio of the partial pressures:

K = P(CH3OH) / P(CH3OH)

K = (110.0 mmHg) / (14.00 mmHg)

K ≈ 7.857

Next, we need to convert the pressure from mmHg to atm because the gas constant R is expressed in J/mol·K, which is based on the unit of atm:

1 atm = 760 mmHg

So, P(CH3OH) = 110.0 mmHg = 110.0 mmHg / 760 mmHg/atm ≈ 0.145 atm

P(CH3OH) = 14.00 mmHg = 14.00 mmHg / 760 mmHg/atm ≈ 0.0184 atm

Now we have the equilibrium constant, K, and the pressures in atm. We can proceed to calculate the free energy change, ΔG:

ΔG = -RT ln(K)

Let's assume the temperature, T, is given as 298 K:

ΔG = -(8.314 J/mol·K) * (298 K) * ln(7.857)

ΔG ≈ -19.78 J/mol

To convert the free energy change from joules to kilojoules, we divide by 1000:

ΔG ≈ -0.0198 kJ/mol

It's important to note that the free energy change depends on the temperature and the equilibrium constant of the reaction. If the temperature or the equilibrium constant changes, the calculated value of ΔG will also change.

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