Convert .58 moles of dicarbon hexafluoride gas to liters at STP

The balanced equation of the octane gasoline is as follows :

(a) Calculate moles of CO2 that can form from 0.603 mol of octane:

• From the balanced equation, we can see that :

2 moles of octane : 16 moles of CO2

then, 0.603mol octane : x moles of CO2....( do a cross multiply )

∴ xmoles CO2 = (0.603 mol octane * 16mole CO2) / 2mole Octane

= 4.824 moles

(b) Calculate moles of water are produced by the combustion of 8.72 mol of octane.

• 2 moles of octane gives 18 moles H2O

then, 8.72 moles Octane will give x moles of H2O

∴Moles of water = (18 * 8.72 )/2

= 78.48 moles

This means that 78.48 moles of H2O is formed from 8.72 mol octane

(c) Calculate moles of oxygen needed to synthesize 8.90 mol of CO2

• 16 moles CO2 require 25 moles O2

then, 8.90 mol CO2 requires x moles of O2

∴Moles of O2 = (8.90 *25 )/16

=13.91 moles

This means that 13.91 moles of O2 is needed to synthesize 8.90 mol CO2.

(d) Calculate moles of octane?

• 16 moles of CO2 require 2 moles octane

then , 8.90 CO2 require x moles of Octane

∴ Moles of octane = 8.90 * 2/16

Answer:

Explanation:

yes leon is correct because matter is anything that takes space and also has mass in it.

thks.

Answer:

Explanation:

My guess is option c

Answer:

It's water.

Explanation:

Water is also called as universal solvent, because it's literally almost the only one we use.

Sorry if I spelled something wrong. I'm Dominican so yeah . I hope this helps you :)

The probability that the batch actually has a chemical defect is 16%. Therefore, option (a) 16% is the correct answer.

To solve this problem, we can use Bayes' theorem. Let's denote the following events:

A: The batch has a chemical defect.

B: The test result is positive for the defect.

We want to find the probability of event A given event B, denoted as P(A|B).

According to the problem statement, we have the following probabilities:

P(A) = 0.02 (2% of the batches have the defect)

P(B|A) = 0.9 (90% of the tests detect the defect, true positive rate)

P(not A) = 1 - P(A) = 0.98 (98% of the batches do not have the defect)

P(B|not A) = 0.096 (9.6% of the tests are false positives, false positive rate)

Now, let's calculate P(A|B) using Bayes' theorem:

P(A|B) = (P(B|A) * P(A)) / (P(B|A) * P(A) + P(B|not A) * P(not A))

P(A|B) = (0.9 * 0.02) / (0.9 * 0.02 + 0.096 * 0.98)

      = 0.018 / (0.018 + 0.09408)

      ≈ 0.018 / 0.11208

      ≈ 0.1606

Therefore, the odds that the batch actually has the chemical defect, given a positive defect result, is approximately 16.06%. Rounding this to the nearest percent, we get the option (a) 16%.

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The height of the object : 600 mm

Given

d object=360 mm(object distance)

d image=90 mm(image distance)

Required

h object

Solution

focal length = f :

\(\tt \dfrac{1}{f}=\dfrac{1}{d_o}+\dfrac{1}{d_i}\\\\\dfrac{1}{f}=\dfrac{1}{360}+\dfrac{1}{90}\rightarrow f=72~mm\)

The magnification :

\(\tt M=\dfrac{d_i}{d_o}=\dfrac{90}{360}=0.25\)

\(\tt M=\dfrac{h_i}{h_o}\\\\0.25=\dfrac{150}{h_o}\rightarrow h_o=600~mm\)

In many cases, the Coase theorem does not work well because c. transaction costs are too high. The Coase theorem suggests that in the absence of transaction costs, parties can negotiate and reach an efficient outcome regardless of the initial allocation of property rights.

However, in reality, transaction costs such as bargaining costs, information costs, and enforcement costs can significantly hinder the ability of parties to negotiate and reach mutually beneficial agreements.

When transaction costs are high, it becomes difficult for parties to gather and exchange information, engage in effective negotiations, and enforce agreements. These costs can include the time and resources required for communication, legal representation, monitoring, and enforcement. High transaction costs can discourage parties from engaging in negotiations or make it economically infeasible to reach an efficient outcome.

Therefore, despite the theoretical possibility of the Coase theorem, transaction costs often present practical barriers to efficient bargaining and prevent the theorem from working effectively in real-world situations.

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To prioritize the four groups connected to the chirality center using the Cahn-Ingold-Prelog rules, we need to compare the atoms directly bonded to the chirality center and assign them a priority based on their atomic number.

Starting with the highest atomic number, we have:

1. Br (bromine)

2. Cl (chlorine)

3. But (butyl group)

4. Prop (propyl group)

5. Et (ethyl group)

6. Me (methyl group)

7. CH3 (methyl group)

So the priority order of the groups from highest to lowest is:

1. Br
2. Cl
3. But
4. Prop
5. Et
6. Me
7. CH3

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The molar concentration of Na ions in 0.0350 m solutions of the following sodium salts in water is 0.0350 M.

Determining the molar concentration of Na ions:

The molar concentration of Na+ ions in a 0.0350 M solution of NaBr (sodium bromide) can be calculated by considering the dissociation of NaBr in water.

Step 1: Write the dissociation equation for NaBr in water:
NaBr (aq) → Na+ (aq) + Br- (aq)

Step 2: Notice that for every 1 mole of NaBr, 1 mole of Na+ ions is produced.

Step 3: Calculate the concentration of Na+ ions in the 0.0350 M NaBr solution:
Since 1 mole of NaBr produces 1 mole of Na+ ions, the molar concentration of Na+ ions is equal to the molar concentration of NaBr.

Therefore, the molar concentration of Na+ ions in the 0.0350 M NaBr solution is 0.0350 M.

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The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

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Answer:

it's rn and the atomic number is 86 if u needed that

Explanation:

:)

Answer:

Liquids take on the shape of their container. The liquid state of matter is an intermediate phase between solid and gas. Like the particles of a solid, particles in a liquid are subject to intermolecular attraction; however, liquid particles have more space between them, so they are not fixed in position.

Explanation:

The sign of δg (change in Gibbs free energy) indicates the direction and feasibility of a chemical reaction.

If δg is negative, the reaction is spontaneous and will proceed as written, releasing energy in the form of heat and light. A negative δg indicates that the products have a lower free energy than the reactants and that the system is moving towards a state of lower energy and greater stability. Conversely, if δg is positive, the reaction is non-spontaneous and energy must be added to the system in order to make it occur. A positive δg indicates that the products have a higher free energy than the reactants and that the system is moving away from a state of lower energy and greater stability. Therefore, the sign of δg provides information on the direction and energetics of a chemical reaction.

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The acid dissociation constant (Ka) for uric acid is \(1.0 x 10^-5.\)

The dissociation of uric acid can be represented as follows:

H2UA ⇌ H+ + HUA

The equilibrium expression is given by:

Ka = [H+][HUA-]/[H2UA]

where Ka is the acid dissociation constant, [H+] is the concentration of hydrogen ions, [HUA-] is the concentration of the urate ion, and [H2UA] is the concentration of uric acid.

At equilibrium, the concentration of H2UA is equal to the initial concentration minus the concentration of H+ ions that have been consumed:

[H2UA] = 0.110 - [H+]

The concentration of HUA- can be calculated from the equation:

[HUA-] = [H+]

Substituting the above expressions into the equilibrium expression for Ka, we get

\(Ka = ([H+]^2) / (0.110 - [H+])\)

Substituting [H+] = 3.4 x 10^-2 M, we get:

\(Ka = [(3.4 x 10^-2)^2] / (0.110 - 3.4 x 10^-2)\)

\(Ka = 1.0 x 10^-5\)

Therefore, the acid dissociation constant (Ka) for uric acid is \(1.0 x 10^-5.\)

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Answer:

Periodic tables can use color to identify other element characteristics. For example, an electronegativity periodic table color codes the elements based on how electronegative they are. The valence periodic table uses color to identify the most common valence state for each element.Oct 2, 2019

pls like and rate us .

The color given to a the elements in periodic table is to characteristics of the elements mainly to identify whether they are solid, gas or liquid. Thus option D is correct.

A periodic table contains all the discovered elements which are classified into different groups and periods. Groups are vertical columns of elements with similar properties and same number of valence electrons.

Periods are horizontal rows from left to right with an increase in atomic number. There are 18 groups and 7 periods in periodic table. Each group has given each color and some elements showing exceptional characteristics such as hydrogen and helium have separate colors.

All the first group elements called alkali metals have one color and the second groups elements with another color, All the d-block elements are given the same colour and metals in p-block elements have the same color.

Similarly, all the metalloids have one color and all other gases have the same colour in which inert gas group and halogen group have seperate colours.

Hence, the color in periodic table helps to identify the element's nature like its state also. Thus option D is correct.

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Answer:

I think its a double reaction

Explanation:

Answer:

It should be a Colander! :3

Let me know if you need help with the others!

Answer:

1. Colander

2.Rolling pin

3. rubber spatula

4.pastry blender

Answer:

KOH + H2SO4 --> K2SO4 + H2O

Answer:

A liquid

Explanation:

Liquids has an indefinite shape, which means it could change from one shape to another. For example, if you pour water into a rectangular fish tank. The shape of the liquid changes into a rectangle. Definite volume means its volume is consistent and that it is unchangeable. If you fill the rectangular fish tank with water, the volume of the water stays the same even though it changes shape.

Hope this helps.

Answer:Plasma is highest energy state of matter.It consists of electrons,protons and neutral particles.

Explanation:(1) Plasma has a very high electrical conductivity .

(2) The motion of electrons and ions in plasma produces it's own electric and magnetic field

(3)It is readily influenced by electric and magnetic fields .

(4)It produces it's on electromagnetic radiations.



Answer:

Use a flame test to detect the presence of an alkali metal ion. A cleaned, moistened flame test wire is dipped into a solid sample of the compound. It is then put into the edge of a blue Bunsen flame. The flame colour produced indicates which alkali metal ion is present in the compound.

Explanation:

The intermolecular forces between hydrogen fluoride (HF) and methanol (CH3OH) molecules are hydrogen bonding and dipole-dipole interactions.

Hydrogen bonding occurs between the hydrogen atom of one molecule and the oxygen atom of another molecule. In the case of HF, the hydrogen atom forms hydrogen bonds with the oxygen atoms of the methanol molecules.

On the other hand, the dipole-dipole interaction occurs between the polar HF molecule and the polar methanol molecule due to their difference in electronegativity. Both hydrogen bonding and dipole-dipole interaction result in relatively strong intermolecular forces between HF and methanol molecules, which increase the boiling point and viscosity of the mixture of these two compounds.

Hydrogen bonding also contributes to the higher surface tension of the mixture compared to the individual components. These intermolecular forces play a significant role in the behavior of HF-methanol mixtures and their applications in various chemical and industrial processes.

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Answer:

D. Some positive particles bounced back in the direction they came from

In de Morceau's nomenclature scheme, the smaller atom appears first.

Nomenclature is an organism name system used in biological classification. Genus and species names, two Latinized nouns drawn from numerous sources, serve as indicators of the species to which the creature belongs.

On August 26, 1743, Antoine-Laurent Lavoisier was born in Paris, France. He was a well-known French chemist and a key player in the 18th century chemical revolution. In addition to co-creating the current system for identifying chemical compounds, he established an experiment-based explanation of the chemical reactivity of oxygen.

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The osmotic pressure of the glucose solution is 21.49 atm.

From the question given above, the following data were obtained:

π = iMRT

π = 1 × 0.85 × 0.0821 × 308

π = 21.49 atm

Therefore, the osmotic pressure is 21.49 atm

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Answer:

yes

Explanation:

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.

Answer:

Kinetic energy of electron = -E₂ = 3.4 ev

Kinetic energy of electron = -E₄ = 0.85 ev

Explanation:

In case of hydrogen atom energy associated with nth state is,

En =  -13.6/n²

For n = 2

E₂ = -13.6 / 2²

E₂ = -13.6/4

E₂ = -3.4 ev

Kinetic energy of electron = -E₂ = 3.4 ev

For n = 4

E₄ = -13.6 / 4²

E₄ = -13.6/16

E₄ = -0.85 ev

Kinetic energy of electron = -E₄ = 0.85 ev

Answer:

Ionization energy increases as you go across a period, and increases as you move up a group. So, elements with the smallest ionization energy would be at the bottom left corner of the periodic table. Examples of elements with small ionization energy: Francium (Fr), Cesium (Cs), Radium (Ra).

The substance Z will be a poison if it produces adverse effects on th body even in small quantities.

A poison is a substance which when ingested into the body of an organism causes harm or injury to that organism.

Poisons can be in gaseous, solid or liquid form.

Poisons may be natural or synthetic in nature.

The characteristics of poison include:

Therefore, the substance Z will be a poison if it produces adverse effects on th body even in small quantities.

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The location of a planet within the solar system influences its orbital characteristics, motion, and temperature, shaping its unique environmental conditions and behaviors.

Shape of orbit: The location of a planet determines the shape of its orbit around the Sun. Planets closer to the Sun, such as Mercury and Venus, have elliptical orbits with smaller eccentricities.

In contrast, planets farther from the Sun, like Mars and Jupiter, have more circular orbits. The shape of the orbit influences the planet's distance from the Sun at different points during its revolution, impacting factors such as temperature and intensity of sunlight.

Motion: The location of a planet affects its motion within the solar system. Planets closer to the Sun have higher orbital speeds, as they experience stronger gravitational forces.

They complete their orbits more quickly compared to planets farther away. Additionally, the location within the solar system determines the direction of a planet's motion—whether it orbits in the same direction as the Sun's rotation (prograde motion) or in the opposite direction (retrograde motion).

Temperature: The location of a planet in the solar system plays a significant role in determining its temperature. Proximity to the Sun affects the amount of solar radiation received by a planet.

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