what are atoms...??????? (FP)​

A molecule of ethanol (C2H6O) is composed of 9 atoms.

Breaking down the molecular formula: C2H6O

There are 2 carbon atoms (C2).

There are 6 hydrogen atoms (H6).

There is 1 oxygen atom (O).

In total, the molecule of ethanol contains 2 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom, summing up to a total of 9 atoms.

A molecule of ethanol (C2H6O) consists of 2 carbon atoms (C), 6 hydrogen atoms (H), and 1 oxygen atom (O). Therefore, there are a total of 2 + 6 + 1 = 9 atoms in a molecule of ethanol.

Adding up the individual atoms, we get a total of 2 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom, which sum up to 9 atoms in total.

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Answer:

1.78 × 10n M

n = -4

Explanation:

H⁺ concentration in a solution with a pH of 3.75 is 1.7 × 10⁻⁴

pH may be defined as a measure of free acidity.

More precisely, pH is defined as the negative log of the hydrogen ion concentration.

                                              pH = - log [H⁺]

The range of pH extends from zero to 14.

A pH value of 7 is neutral, because pure water has a pH value of exactly 7. Values lower than 7 are acidic; values greater than 7 are basic or alkaline.

Given,

pH = 3.75

We know that, pH = - log [H⁺]

                       [H⁺] = antilog [ -pH]

                         [H⁺] = antilog [ -3.75]

                          = 1.7 × 10⁻⁴ M

Therefore, H⁺ concentration in a solution with a pH of 3.75 is 1.7 × 10⁻⁴

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The final concentration will be if the 2 more liters of the water is added is 0.29 M.

The mass of the hydrogen peroxide = 24 g

The moles of the hydrogen peroxide = mas / molar mass

The moles of the hydrogen peroxide = 24 / 34

The moles of the hydrogen peroxide = 0.70 mol

The volume = 0.4 L

The concentration = moles / volume

The concentration = 0.70 / 0.4

The concentration = 1.75 M

The final concentration is as :

1.75 × ( 0.4 L) = (final concentration) ( 0.4 L + 2.0 L)

0.7 = (final concentration) ( 2.4 )

Final concentration = 0.29 M.

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Through a procedure known as polymerization, monomers are joined to produce polymers.

the process of polymerization involves the joining of monomers, or small organic molecules, to create polymers, which are larger molecules that resemble long chains. Condensation and addition polymerization are the two primary forms of polymerization.

The method of addition polymerization involves joining together monomers with double or triple bonds to create polymers without losing any atoms. Plastics such as polyethylene and polypropylene are produced using this method of polymerization.

In the process of condensation polymerization, functional monomers like amines and carboxylic acids are linked together to form polymers by removing a tiny molecule like water. Polyamides, polyesters, and polyurethanes are produced using this form of polymerization.

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To solve for the pressure, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the mass of oxygen to moles. The molar mass of oxygen is 32 g/mol, so:

n = m/M = 10 g / 32 g/mol = 0.3125 mol

Next, we need to convert the temperature to Kelvin. We can do this by adding 273.15 to the Celsius temperature:

T = 50°C + 273.15 = 323.15 K

Now we can plug in the values we have into the ideal gas law:

PV = nRT

P(2.00 L) = (0.3125 mol)(0.08206 L·atm/mol·K)(323.15 K)

Solving for P, we get:

P = (0.3125 mol)(0.08206 L·atm/mol·K)(323.15 K) / (2.00 L)

P ≈ 4.98 atm

Therefore, the pressure in the container is approximately 4.98 atm, rounded to one decimal place.

The electron-domain geometry and molecular geometry of boron trifluoride are:

A. tetrahedral, trigonal planar.

Boron trifluoride (BF₃) exhibits a tetrahedral electron-domain geometry and a trigonal planar molecular geometry. The central boron atom is surrounded by three fluorine atoms, forming three bonding electron domains and no lone pairs.

The repulsion between these electron domains pushes the fluorine atoms apart, resulting in a trigonal planar molecular shape. Despite the tetrahedral electron-domain geometry, the lack of lone pairs on the central atom allows the fluorine atoms to arrange themselves in a flat, trigonal planar configuration.

This arrangement optimizes the separation of electron domains, minimizing electron repulsion and achieving a stable molecular structure for boron trifluoride. Therefore, the correct option is A. tetrahedral, trigonal planar.

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Answer: Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals.

Explanation:

There are 24 valance electrons in the compound.

We know that the valence electrons are those that are found on the valence shell of an atom. There are four atoms that can be seen in the compound that is under consideration. The atoms are selenium, bromine (2 atoms) and oxygen.

Given that there are seven valence electrons in bromine and six valence electrons in oxygen and selenium. We have;

2(7 electrons of bromine) + 6 electrons of oxygen + 4 electrons of Se

= 24 electrons

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Answer:

a) 9.0   B. 14

Explanation:

6*4-15=9   we need 2 sig figs so 9.0

18/2.0+5.3=14.3 we need 2 sig figs so 14

but not 100%

Answer:

B.

\(from \: eisteins \: energy \: relation : \\ E = hf \\ h \: is \: plancks \: constant\\ 3.26 \times {10}^{ - 19} = 6.63 \times {10}^{ - 34 } \times f \\ f = \frac{3.26 \times {10}^{ - 19} }{6.63 \times {10}^{ - 34} } \\ f = 4.92 \times {10}^{14} \: Hz\)

Answer:

A nonrenewable resource is a substance that is being used up more quickly than it can replace itself. Its supply is finite. Most fossil fuels, minerals, and metal ores are nonrenewable resources. Renewable resources such as solar and wind power and water are unlimited in supply.

Explanation:

Hope it is helpful....

The initial concentration of acetic acid if concentration of NaOH is 0.32M is 7.69M when performing the titration when the initial burette was at 1.45 ml and the final volume was 34.89 ml.

Given the initial volume of burette was (V1) = 1.45 ml

The final volume reading of burette was (V2) = 34.89mL

The concentration of NaOH (M2) = 0.32M

Let the concentration of acetic acid = M1

We know that M1V1 = M2V2

M1(1.45 mL) = 0.32 M(34.89 mL)

M1 = 7.69M (acetic acid)

Hence the the initial concentration of acetic acid is 7.69M if concentration of NaOH is 0.32M.

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complete question: In performing the titration in part a, the initial buret was at 1.45 ml and the final volume was 34.89 ml. what is the initial concentration of acetic acid if concentration of naoh is 0.32M?

Answer:

please don't trust those scam links

Answer:

2-4 minutes

Explanation:

Fastest changing temperature means larger change in temperature when subtracting final temperature from initial temperature in a given time period (given time period is 2 minutes for all the options)

For 0-2 minutes, our final temperature was 40 (at 2 min) and initial temperature was  20 (at 0 min), thus temperature change was only 20 C.

For 2-4, our final temperature was 80 (at 4 min) and initial temperature was   40 (at 2 min) thus temperature change was 40 C.

For 4-6, our final temperature was 100 (at 6 min) and initial temperature was   80 (at 4 min) thus temperature change was 20 C.

We are not given temperature at 8 min so option D is invalid.

As we can clearly see that in a given 2 minute period, option B has the fastest change because it changed 40C when compared to other options that changed only 20C from starting temperature.

Hope that makes sense.

In the given scenario, 20 grams since no matter was added or removed. The correct option is B.

Matter is a substance composed of various particle types that occupies physical space and has inertia.

According to modern physics principles, each type of particle has a distinct mass and size.

The electron, proton, and neutron are the most well-known examples of material particles.

Whether they are living or non-living. Matter is significant because it comprises everything around us.

Matter cannot be created or destroyed, instead, it can only be transformed into a different form.

On Earth, matter exists as a solid, liquid, or gas. Atoms and molecules are tiny particles that make up solids, liquids, and gases.

In the given scenario, 20 grams were added or removed because no matter was added or removed.

Thus, the correct option is B.

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Answer:

Group B is the control group

Explanation:

In an experiment, a control group is the standard to which comparisons are made in an experiment.

The major organic product formed in the reaction of 1−methylcyclohexene with bromine in water is attached as a picture.

A reaction mechanism is a representation of step by step transfer of electrons and molecules from one compound to another compound. In reaction mechanisms, the curved arrows show the moment of electrons.

In the reaction mechanism of 1-methyl cyclohexene the double bond of 1-methyl cyclohexene act as an attacking group and attacks Br2. As a result, one Br atom gets attached to 1-methyl cyclohexene. This results in a carbocation generation on the carbon having the methyl group. This carbon cation then attacks the oxygen of water molecules and (1S,2S)-2-bromo-1-methylcyclohexan-1-ol will generates as the major product.

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The entropy of 1 mole of N2 molecules, considered as an ideal gas occupying a cubic volume of side 1 cm, is approximately 4:  62 J/K.

To find the entropy of 1 mole of N2 molecules, we need to use the formula for entropy:

S = R * ln(W)

Where:
S is the entropy
R is the gas constant
ln is the natural logarithm
W is the number of microstates or ways the system can be arranged

For an ideal gas, the number of microstates can be calculated using the formula:

W = (V^N) / (N!)

Where:
V is the volume
N is the number of molecules

Given that we have 1 mole of N2 molecules, which is approximately 6.022 x 10^23 molecules, and the volume of the cube is 1 cm^3, we can calculate the entropy.

First, let's convert the volume from cm^3 to m^3:

1 cm^3 = (1 x 10^-2 m)^3 = 1 x 10^-6 m^3

Now, we can substitute the values into the formula for W:

W = ((1 x 10^-6 m^3)^(6.022 x 10^23)) / (6.022 x 10^23)!

To simplify the calculation, we can use the fact that ln(W) is equivalent to ln((V^N) / (N!)) = ln(V^N) - ln(N!).

ln(W) = ln((1 x 10^-6 m^3)^(6.022 x 10^23)) - ln(6.022 x 10^23)!

ln(W) = (6.022 x 10^23) * ln(1 x 10^-6 m^3) - ln(6.022 x 10^23)!

Now, substituting the values of ln(1 x 10^-6 m^3) and ln(6.022 x 10^23) into the equation:

ln(W) = (6.022 x 10^23) * (-13.8155) - ln(6.022 x 10^23)!

Finally, we can use the value of the gas constant, R, which is approximately 8.314 J/(mol·K), to calculate the entropy:

S = R * ln(W) = (8.314 J/(mol·K)) * ((6.022 x 10^23) * (-13.8155) - ln(6.022 x 10^23)!)

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Answer:

Metal

Non-metal

Explanation:

CaF2 is an ionic compound. Ionic compounds are mostly composed of a metal and a non metal. Metals donate electrons to non-metals to form ionic compounds.

Calcium is a divalent ion of group two in the periodic table while F is a univalent nonmetal of group 17 in the periodic table. Hence the compound CaF2 is composed of a metal and a nonmetal.

Answer:

I would say you are correct.

Explanation:

Answer:

I believe it'll be A (even though you chose it already).

Explanation:

Answer:

Answer is C.

Explanation:

I hope it's helpful!

Answer:

1.T

2.I

Explanation:

hope it help

#carry on learning

The object and description that matches is Object 2 and T.

Object 1 has no matching description.

A Fish aquarium filter is a filter whose function is to clean the water of debris, removes the toxic buildup of ammonia and nitrates, and aerates the water so that fish can in a conducive environment and breathe properly

An engine oil filter is a filter whose function is to filter and remove contaminants that may be present in the engine oil, transmission oil, lubricating oil, or hydraulic oil in order for proper functioning of the engine.

Therefore, the object and description that matches is Object 2 and T.

Object 1 has no matching description.

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If the kinetic energy of the reactants was not enough to provide the needed activation energy then:

Reaction products would reform.
The rate of the response would probably quicken.
The products would develop in an energetically unstable condition.
The complex that had been activated would change into products.
A lower energy state would be used to generate the products.

What is the meant by activation energy?
The least amount of energy necessary to bring atoms or molecules into a state where they may undergo chemical transformation or physical transport is known as the activation energy in chemistry. The difference in energy content between atoms or molecules in an activated or transition-state configuration and the same atoms and molecules in their original configuration is known as the activation energy in transition-state theory.

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To calculate the amount of money you would spend on gas in one week while driving 113 km per day in Europe,  gas costs we need to convert the given values and perform some calculations.

1 km = 0.621371 miles

So, 113 km is approximately equal to 70.21 miles (113 km * 0.621371).

Miles per gallon (mpg) = 28.0 mi/gal

Miles driven per week = 70.21 mi/day * 7 days = 491.47 miles/week

Gallons consumed per week = Miles driven per week / Miles per gallon = 491.47 mi/week / 28.0 mi/gal ≈ 17.55 gallons/week

1 euro = 1.26 dollars

Cost per gallon = 1.10 euros/gallon * 1.26 dollars/euro = 1.386 dollars/gallon

Total cost per week = Cost per gallon * Gallons consumed per week = 1.386 dollars/gallon * 17.55 gallons/week ≈ 24.33 dollars/week

Therefore, if gas costs 1.10 euros per liter, and your car's gas mileage is 28.0 mi/gal, you would spend approximately 24.33 dollars on gas in one week while driving 113 km per day in Europe.

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In order to find a name of a Hydrocarbon molecule, we need to look for the main carbon chain first, this will be the chain with the highest number of carbon atoms, and in this molecule, we have 4 carbon atoms, therefore we have a 4 carbon molecule, the prefix for this type of molecule is But.

We also have a triple bond in the first carbon, the suffix for triple bonds is "yne"

Therefore, if we add all these informations, we will have 1-butyne, letter A

Answer: A The Triangle Fire was a tragedy that could have been prevented.

Explanation:

The Triangle Fire was a tragedy that happened in the factory of Shirtwaist Company in New York City where there was.a.fore outbreak and about 145 employees of the company were killed.

The deaths could have been prevented because the company neglected safety measures such as having a good and reliable pump system, having readily available fire extinguishers. Also, what resulted in the lethal nature of the incident was because the doors within the building of the factory were locked.

The tragedy generated lots of attention and series of laws were been out in place in order to ensure that workers are safe at their workplace.

Answer:

See Explanation

Explanation:

as potassium chloride(KCI) dissolves in water, the potassium and chloride  ions are formed and hydrated. Ion-dipole forces attract the positive(Hydrogen) end of the polar water molecules to the negative chloride ions at the surface of the solid, and they attract the negative(oxygen) ends to the positive potassium ions

Answer:

Answer: The final volume of the gas will be 8.07 L.

Approximate number of tubes Amelia can fill = 8.07 L/500 mL = 16.14 tubes.

Answer:

Your answer would be "Polyatomic anions."

I ask that you search to ensure there is not a similar question as it would save you time.

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