According to VSEPR Theory, the molecular geometry for CH3+ is

A) tetrahedral
B) trigonal pyramidal
C) bent or angular
D) none of these

Answer:

The phenomenon of change from one state of matter to another and then back to the original state is called the inter-conversion of states of matter.

When the 0.500 M silver nitrate solution is added to the 1.50 g mixture of sodium nitrate and sodium chloride in water, a reaction occurs.

When the 0.500 M silver nitrate solution is added to the mixture of sodium nitrate and sodium chloride, the following reaction takes place:

NaNO₃(aq) + AgNO₃(aq) → AgNO₃(s) + NaNO₃(aq)

NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)

The solid produced is silver chloride (AgCl), which is a white precipitate.

At the atomic/molecular level, the following species would be seen:

To calculate the percent sodium chloride in the original unknown mixture, we need to know how much of the white solid we collected. Let's assume we collected 2.00 g of silver chloride.

We need to compute the number of moles of silver chloride produced:

2.00 g AgCl x (1 mol AgCl/143.32 g AgCl) = 0.01395 mol AgCl

Since silver nitrate is in excess, all the chloride ions in the original mixture will react with silver ions to form silver chloride. The number of moles of chloride ions in the original mixture is therefore equal to the number of moles of silver chloride produced:

0.01395 mol Cl- = 0.01395 mol NaCl

To calculate the percent sodium chloride in the original mixture, we need to know the total mass of the mixture:

1.50 g NaNO₃ + NaCl = 1.50 g

The percent sodium chloride is:

(0.01395 mol NaCl x 58.44 g/mol NaCl) / 1.50 g x 100% = 54.4% NaCl

Therefore, the original mixture was 54.4% sodium chloride and 45.6% sodium nitrate.

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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In boron monofluoride, boron will need 5 bonds to attain octet rule while fluorine will require 1 bond to attain octet rule.

The valency electron of an atom determines the kind of bonding that occurs between atom of elements.

Therefore,

The bonding between Boron and fluorine to form  boron monofluoride are as follows:

An electronically neutral boron atom has 5 electrons. Using electronic configuration, the outer electrons are 3 (Using the model  2 8 8 2). It will require 5 electrons to attain the octet rule.

On the other hand an electronically neutral fluorine  atom has 9 electrons. The outer electrons are 7 electrons. Naturally, it will require 1 electron to attain octet rule.

In the case of boron monofluoride, 1 atom of boron combines with 1 atom of fluorine to form the compound. Therefore, the total valency electrons of the diatomic compound is 10 electrons altogether.

Generally, In boron monofluoride, boron will need 5 bonds to attain octet rule while fluorine will require 1 bond to attain octet rule.

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Boron needs four bonds in order to satisfy the octet rule while fluorine needs only one bond in order to satisfy the octet rule.

Boron is an element in group 13 of the periodic table. This means that boron has three valance electrons. The octet rule states that an atom must have eight valence electrons in order to attain stability.

This implies that boron must have a total of four bonds in order to satisfy the octet rule. On the other hand, fluorine which has seven valence electrons only needs one bond in order to satisfy the octet rule.

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Answer:

Freezing points for water with freezing mixtures based on salt and ice: Ammonium Nitrate - Chrushed Ice or Snow in Water 1 part Ammonium Nitrate - 0.94 parts Ice/water : temperature -4 o C 1 part Ammonium Nitrate - 1.20 parts Ice/water : temperature -14 o C

Explanation:

Answer:

The pulling atom is oxidized while the pulled atom is reduced. Grade 9 Chemistry

Explanation:

Answer:17

Explanation:cause i took the test

Answer: Haleybear1006 is right the answer is 17

Explanation: i took the test

The best description of cis-trans isomers is that they differ in their spatial arrangement around inflexible double bonds. Option E is correct.

Specifically, cis-trans isomers are a type of stereoisomers that have the same molecular formula and the same covalent bonds but differ in the spatial arrangement of their atoms due to the inflexibility of a double bond. In cis isomers, the two substituents on each carbon atom are on the same side of the double bond, while in trans isomers, the two substituents on each carbon atom are on opposite sides of the double bond.

This results in different physical and chemical properties for the two isomers. For example, cis and trans isomers of some compounds may have different boiling points, melting points, and reactivities.  Cis-trans isomerism is an important concept in organic chemistry as it affects the properties and behavior of molecules and can have significant implications for their biological activity, environmental fate, and industrial applications. Option E is correct.

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16

Hydrocarbons are compounds that only consist of hydrogens and carbons.

Saturation

For a hydrocarbon to be saturated, it must have the maximum amount of possible hydrogens. This means that a hydrocarbon will only have single bonds. The hydrocarbon described in the question (known as heptane) is saturated. To find the number of hydrogens in a saturated hydrocarbon we can use the formula 2x+2, where x is the number of carbons.

Thus, the hydrocarbon has 16 hydrogens.

Lewis Structure

The formula above is based on the Lewis structure of hydrocarbons. The Lewis structure of a compound is a visual representation of the elements and bonds within the compound. Another way to find the number of hydrogens is by drawing the complete Lewis structure and then counting the hydrogens. Attached below is the Lewis structure of heptane.

what is the following???

a qualitative observation is when somehthings appearance changes like form red to blue, and qualitative is when the umber of something changes.

Hope this helps

Kenny

The initial temperature of water is 47.8⁰C

Given,

mass of water is 2450g

absorbed heat is 5.35×105 J

we have to find out initial temperature

First Calculate the change in temperature when 5.35×10^5 J of heat is provided to 2450g of water.

q = m . c . ∆T

q is amount of heat gained

m is the mass of water

c is the specific heat of the substance

∆T is change in temperature

Specific heat of water is 4.18 J/g⁰C

∆T = q / m . c

= 5.35×10^5 / 2450 × 4.18

= 52.2⁰C

Now we know that the final temperature of the water is

100⁰C and that this final temperature is 52.2⁰C

is higher than the initial temperature of the water.

So by, ∆T = T(f) - T(i)

T(i) = T(f) - ∆T

T(i) = 100⁰C - 52.2⁰C

= 47.8⁰C

Therefore, initial temperature of water is 47.8⁰C

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The new concentration : 7.5 M

Given

500.0 mL(0.5 L) of a 15.0M solution acetic acid

500.0 mL(0.5 L) of  water

Required

The new concentration

Solution

Dilution is the process of adding solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

 M₁V₁=M₂V₂

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

Input the value :

M₂=(M₁V₁)/V₂

M₂=(15x0.5)/1

M₂=7.5 M

Answer:

log = ( - 0.51 z 2) / ( 1 + ( / 305)

Explanation:

Answer:yes

Explanation:

Only Ag2CO3 will precipitate from the solution.

When Na2CO3 is added to the solution, it will react with the Ag^+ and Pb^2+ ions to form precipitates of Ag2CO3 and PbCO3. The Mn^2+ ion concentration is not high enough to form a precipitate with Na2CO3.

First, let's calculate the initial concentration of Ag^+ and Pb^2+ ions in the solution:

Ag^+: 0.00050 M

Pb^2+: 0.00050 M

Next, we need to calculate the concentration of Na2CO3 after it is added to the solution. Since we added 10.00 ml of 1.0*10^-6 M Na2CO3 to a total volume of 500 ml, the final concentration of Na2CO3 is:

[Na2CO3] = (10.00 ml / 500 ml) * 1.010^-6 M

[Na2CO3] = 2.010^-8 M

Now we can use the Ksp values to determine which precipitates will form.

For Ag2CO3:

Ksp = [Ag^+]^2[CO3^2-]

8.110^-12 = (2x)^2 (2x)

8.110^-12 = 4x^3

x = 2.0*10^-4 M

Since the concentration of CO3^2- is higher than the solubility product, Ag2CO3 will precipitate.

For PbCO3:

Ksp = [Pb^2+][CO3^2-]

7.410^-14 = (0.00050 M)(2x)

x = 9.210^-11 M

Since the concentration of CO3^2- is lower than the solubility product, PbCO3 will not precipitate.

Therefore, the only precipitate that will form is Ag2CO3.

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To find moles when given the molar mass, you can use the concept of molar mass as a conversion factor.Molar mass represents the mass of one mole of a substance, expressed in grams per mole (g/mol).

To calculate moles, divide the given mass of the substance by its molar mass. The equation is:

moles = mass / molar mass

For example, if you have 56 grams of carbon dioxide (CO2) and want to find the number of moles, you need to know the molar mass of CO2, which is approximately 44 g/mol. Using the equation above:

moles = 56 g / 44 g/mol

moles ≈ 1.27 mol

Therefore, there are approximately 1.27 moles of carbon dioxide in 56 grams.

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Answer:

The atomic mass is the mass of an atom. Although the SI unit of mass is the kilogram, atomic mass is often expressed in the non-SI unit atomic mass unit or unified mass or dalton, where 1 amu or 1 u or 1 Da is defined as 1⁄12 of the mass of a single carbon-12 atom, at rest.

Answer:

aurorus

Explanation:

The best example of natural plasma is the ionosphere of the atmosphere including solar corona and lightning including auroras cloud.

the heated or hot  matter that is so hot that the electrons are thrown away from the atoms and forms the ionized gas. Comprises over 99% of the visible universe.

Lightning strikes create plasma by doing a stricking of electricity. Mostly the Sun, and some stars, are in a plasma state. Certain regions of Earth's atmosphere contain some plasma created primarily by ultraviolet radiation from the Sun.

One reason plasma is not so common is because this needs high temperatures required to keep gas in the plasma state. At average temperatures on Earth, there just isn't enough energy for atoms to remain ionized.

However, at thousands to millions of degrees Kelvin, these energies are available, and plasmas dominate

Therefore, aurora clouds  are natural plasma.

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Answer: The final pressure inside the tank is 8.41 kPa.

Explanation: We can use the combined gas law to solve this problem, which relates the pressure, volume, and temperature of a gas:

(P1V1)/T1 = (P2V2)/T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.

We are given P1 = 25.0 kPa, T1 = -50 C = 223 K, and V1 is unknown. We also know that the temperature decreases by a factor of three, so T2 = T1/3 = 223/3 K.

To find V2, we need to assume that the steel container is rigid and its volume remains constant. Therefore, V1 = V2, and we can cancel out the volume from the equation:

P1/T1 = P2/T2

Substituting the values, we get:

P2 = P1 * T2 / T1 = 25.0 * (223/3) / 223 = 8.41 kPa

Therefore, the final pressure inside the tank is 8.41 kPa.

Answer:

So if pressure of a gas is increased by 25%, the volume of a gas is decreased by 25%.

Explanation:

The number of moles contained in each of the given volumes at STP are: a. 1 mole, b. 0.25 moles, c. 0.00558 moles, d. 0.00250 moles.

At STP (Standard Temperature and Pressure), one mole of any gas occupies a volume of 22.4 L. We can use this information to calculate the number of moles contained in the given volumes of different gases.

a. 22.4 L of N₂ at STP contains 1 mole of N₂.

Therefore, 22.4 L of N₂ contains 1 mole of N₂.

b. 5.60 L of Cl₂ at STP contains 0.25 moles of Cl₂.

To calculate this, we can divide the given volume by the molar volume at STP:

5.60 L / 22.4 L/mol = 0.25 moles

c. 0.125 L of Ne at STP contains 0.00558 moles of Ne.

To calculate this, we can divide the given volume by the molar volume at STP:

0.125 L / 22.4 L/mol = 0.00558 moles

d. 70.0 mL of NH3 at STP contains 0.00250 moles of NH3.

To calculate this, we first convert the given volume to liters:

70.0 mL = 0.0700 L

Then we divide the volume by the molar volume at STP:

0.0700 L / 22.4 L/mol = 0.00250 moles

Therefore, the number of moles contained in each of the given volumes at STP are:

a. 1 mole

b. 0.25 moles

c. 0.00558 moles

d. 0.00250 moles

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Answer:

H=mc∆T

H=15×4.18×20

H=1254J

Answer:

5c + 60

Explanation:

dont mind me just doinf this for points

The strand 1 of hydrocarbons is used to produce plastic, hence option D is correct.

Raw resources like natural gas, oil, or plants that have been processed into ethane and propane are used to make plastics. The subsequent "cracking" procedure uses heat to transform ethane and propane into ethylene and propylene. To produce various polymers, these components are mixed.

Propylene is a substance found in large quantities in petroleum. In order to speed up chemical processes, refiners combine heated propylene with a catalyst to create plastic. Propylene molecules start to cluster together like beads on a thread as a result.

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The wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

Wavelength is a property of any type of wave that refers to the distance between two adjacent points on the wave that is in phase, i.e., at the same point in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The energy carried by the photon (E) is related to the wavelength (\(\lambda\)) through the following equation:

\(E=hc/\lambda\); where 'h' is the Plank's Constant and 'c' is the speed of light which is \(3* 10^{-7} m/s\).

We can say that

\(\lambda - hc/E\)

Now after substituting the given values, we get:

\(\lambda = (6.626 * 10^{-34} J.s * 3.00 * 10^8 m/s) / (4.071 * 10^{-19} J)\\\lambda = 4.854 * 10^-7 m\)

Therefore the wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

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Answer:

bamboo can grow 910 mm (36 in) within a 24-hour period,at a rate of almost 40 mm (1 1⁄2 in) an hour (a growth around 1 mm every 90 seconds, or 1 inch {2.54 centimeters} every 40 minutes).

Explanation:

The evidence in figure 2 and table 1 which describes the changes in the rock after a year is the presence of a round edge.

This is referred to as the breaking down or dissolving of rocks and minerals on Earths surface through elements such as wind, water etc.

In the diagram given, the rock previously had a sharp edge but as time went on there was breakdown of the edges which resulted in it becoming round and is therefore the evidence that weathering most likely occurred in the rock.

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Answer:

I can say that knowledge of separating mixtures can help us in daily life and within society in the following ways:

1. Purification of water: Separation techniques are used to purify water for drinking and industrial purposes. It is essential to remove impurities from water to prevent diseases.

2. Recycling: Separation techniques are used to separate materials for recycling. This helps reduce the amount of waste in landfills and helps conserve resources.

3. Food industry: Separation techniques are used in the food industry to separate unwanted particles from food products. This helps ensure that the food we eat is safe and free from contaminants.

4. Medicine: Separation techniques are used in the pharmaceutical industry to separate and purify chemicals for use in medicine. This helps ensure that medicines are safe and effective.

5. Environmental protection: Separation techniques are used to remove pollutants from the environment. This helps protect our natural resources and prevent pollution-related health problems.

6. Oil and gas industry: Separation techniques are used to separate crude oil and natural gas into their various components. This helps in the production of energy and other useful products.

In summary, knowledge of separating mixtures is essential in our daily lives and within society. It helps ensure that we have access to safe and clean water, food, medicine, and energy, and also helps protect the environment.

Explanation:

Answer:

c. mass number

Explanation:

Answer:

c mass number tell me if its right

Explanation:

What type of mixture can be separated by distillation?

Distillation. Distillation is an effective method to separate mixtures comprised of two or more pure liquids. Distillation is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

Answer:

D. evaporation

Explanation:

I did the test on edge :)

The following compounds in order of decreasing strength of intermolecular forces is as follows :

CH₃CH₂CH₂CH₂CH₂CH₃ > (CH₃)₃CCH₂CH₃ > (CH₃)₃CCH₃

1) The following compounds in order of decreasing strength of intermolecular forces is as follows : as the surface are decreases the intermolecular force decrease or as branching increases intermolecular forces decreases.

CH₃CH₂CH₂CH₂CH₂CH₃ > (CH₃)₃CCH₂CH₃ > (CH₃)₃CCH₃

2)  the compound CH₃CH₂CH₃ have the weaker van der wall forces and having the lowest boiling point.

3) the following substances in order of increasing vapor pressure at a given temperature is as follows :

SF₄  < SF₆   <  SiH₄  

SF₄ is the polar molecular and hs the lowest vapor pressure.

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