What is the wavelength, in meters, of yellow light with a frequency of 5.10 x 1014 Hz?

To determine the molecules of butane we can either use multiple steps or use a combined equation based on the following formulas:

Molecules of butane = Moles × Avogadro's Number

Moles of Butane = Mass ÷ Molar Mass

Mass of Butane = volume × Density

∴ Molecules of butane

   = [(volume × Density) ÷ Molar Mass]  × Avogadro's Number

   = ([(25.0 ml × 0.6011 g/ml) ÷ 58.12 g/mol] × (6.022 × 10²³ molecules/mol))

   = 1.557 × 10²³ molecules

Answer:

I think it is b

Explanation:

but I'm not for sure that the answer is right

Answer:

Significant Figures in 200.0

Result 200.0

Sig Figs 4 (200.0)

Decimals 1 (200.0)

Scientific Notation 2.000 × 102

E-Notation 2.000e+2

Answer: 25 moles

Explanation:

I remember learned this in last year AP Chemistry class

Answer:

Liquids and solids are referred to as “condensed phases” because the attractive forces leave little space between molecules.

Explanation:

TOOK THE TEST

Answer:

B. leave little space between the molecules.

Explanation:

trust me bro

Following are the three guidelines to follow when considering to dispose of a material in the drain:

The material should be non hazardous, no radioactive waste and no hazardous chemical waste.

No liquid, solids, sludges, or viscous substances should be disposed in the drain

The material should not interfere with sewage treatment operations. It should not have corrosive pH levels. We should also avoid grease or oil.

It is not necessary that all the waste generated in the laboratory are hazardous. Some chemicals are safe to go in the trash or can be disposed down the sink. There are certain criteria that must be followed in order for materials to be put down the drain including low toxicity, high water solubility, and moderate PH. Only small quantities are allowed in the system at any given time and the chemicals must be degradable by the wastewater treatment.

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The reaction with S_N₂mechanism is likely to be faster than the reaction with S_N₂ mechanism. This is because the carbocation intermediate formed in S_N₁ mechanism is more stable.

The pair of reactions given below is:

CH₃Cl + NaOH→CH₃OH + NaCl

CH₃I + NaOH→CH₃OH + NaI

The type of substitution mechanism:

The first reaction involves S_N₁ mechanism (unimolecular nucleophilic substitution). The second reaction involves S_N₂ mechanism (bimolecular nucleophilic substitution).

Prediction of the reaction that will occur at a faster rate:

The reaction with S_N₁ mechanism is likely to be faster. The rate of this reaction mainly depends on the stability of the carbocation intermediate formed after the initial step. In this case,CH₃Cl reacts to form a tertiary carbocation which is more stable than the primary carbocation formed in CH₃I.

Drawing the correct organic product:

CH₃Cl + NaOH→CH₃OH + NaCl

CH₃I + NaOH→CH_3OH + NaI

CH₃C reacts with NaOHin an S_N₁ mechanism to produceCH₃OH and NaCl.


CH₃ reacts withNaOH in an S_N₂mechanism to produce CH₃OH and NaCI.


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Answer:

20÷4=5g/ml, bcz it is in mL but in other situations you will need to convert it to L by dividing it by 1000

Mass= 20.0g

Volume= 4.0mL

Density of substance

\(\text{Density} = \frac {\text{Mass}}{ \text{Volume}}\)

\( \text{Density} = \frac{20.0 \text{ \: g}}{4.0 \: \text{mL}} \\ \\ \text{Density} = \frac{ \cancel{20.0}\text{ \: g}}{ \cancel{4.0} \: \text{mL}} \\ \\ \text{Density} = 5.0 \: \text{g/mL}\)

\(\therefore \text{Option B}= 5.0 \: \text{g/mL is the correct answer}\)

Answer:

The answer is (Cool air sinks)

Explanation:

hope I help

The Cool air sinks are the part of a convection current in the air. Therefore, option A is correct.

Convection currents are a type of natural heat transfer that involves the transfer of energy and heat from one location to another. We can use the sensation of heat when placing our hands over a campfire as an example of this. Convection currents are to blame for this.

Convection is a method of heat transfer in which gases or liquids are moved between areas of varying temperatures. Natural or free convection is the term used to describe convection that occurs naturally.

Convection currents move heat from one place to another by using the mass motion of a fluid, such as water, air, or molten rock. Convection currents' ability to transfer heat is what drives ocean currents, atmospheric weather, and geology.

Thus, option A is correct.

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mmg mmñm

Explanation:

no lo seeee123456789

tje new preasure is 10.7l

Explanation:

78.07 g/mol is your answer

Answer:

78.07 g/mol

Explanation:

i hope this helps

Answer:

1.0 moles

Explanation:

we are given the number of atoms of the ionic compound, carbon dioxide (\(\rm CO_2\)) which is 6.02x10²³ and we want to find the number of moles in \(\rm CO_2\).

recall that, there are approximately 6.02x10²³ atoms in a mole of any substance (which is actually Avogardro's number, \(\rm N_a=6.02214x10^{23} \: mol^{-1}\) )The answer therefore can be found by dividing given the number of atoms of \(\rm CO_2\) by the Avogadro's number.so, dividing the given number of atoms of \(\rm CO_2\) by the Avogadro's number yields approximately 1.0

Hence,There are approximately 1.0 moles in 6.02x10²³ atoms of \(\rm CO_2.\)

Red Litmus paper turns blue

Answer:

\( Ca(OH) _2 \)

Explanation:

In lime water \( \red{\bold {RED}} \) litmus paper turns \( \blue {\bold {BLUE}} \) because lime water is alkaline.

\(formula \: for \: lime \: water : Ca(OH) _2 \\ \)

The root-mean-square speed of the molecules will be the highest in SF6 at 200°C. According to the kinetic-molecular theory, the root-mean-square speed of gas molecules is directly proportional to the square root of their absolute temperature and inversely proportional to the square root of their molar mass.

The formula for calculating the root-mean-square speed is:

vrms = √(3RT/M)

where:

vrms = root-mean-square speed

R = ideal gas constant

T = absolute temperature

M = molar mass of the gas

At a given temperature, gases with lower molar masses will have higher root-mean-square speeds. In this case, we are comparing gases at 200°C. Among the given options (O2, H2O, and SF6), SF6 has the highest molar mass. Therefore, according to the kinetic-molecular theory, the root-mean-square speed of SF6 molecules will be the highest at 200°C.

The root-mean-square speed of molecules is not the same for all gases at a given temperature. It depends on the molar mass of the gas. In this case, SF6 has the highest molar mass among the given options, so its molecules will have the highest root-mean-square speed at 200°C.

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0.123 mol of methane contains 7.4 x 1022 molecules of methane (ch4). Four hydrogen atoms are joined to the one carbon atom that makes up the molecule methane by single bonds.

It is a gas that is combustible, colourless, odourless, non-toxic, and has a melting point of -161°C. It serves as a fossil fuel, greenhouse gas, and bacterial metabolite, among other things. Avogadro's number refers to the fact that a mole of methane really consists of 6.0221023 molecules. To calculate the required number of molecules, find the substance's molecular weight for one mole. Next, multiply the result by the Avogadro constant after dividing the molar mass value by the molecular mass.

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The lewis electron-dot diagram which represents the bonding in potassium iodide, KI is give in image attached.

The correct answer choice is option 1.

The lewis structure can simply be defined as those diagrammatic chemical representations which describes the bonding between atoms in a particular molecular structure of a chemical substance. From the context of the above given task, the structure is bonded by eight different electrons.

The importance of lewis electron-dot structures cannot be overemphasized. Some of its significances are as follows:

In conclusion, we can now confirm from the explanation given above that potassium iodide is solid chemical compound.

The complete image of the options of the question is also attached.

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Answer:

Explanation:

Here, we want to get the correct electronic configuration for Au

The element gold has 79 electrons

We have the configuration as follows:

The right answer is NH4F.

A salt can be defined as any ionic compound that is composed of positively charged cations and negatively charged anions. A weak acid is an acid that partially dissociates in water to create a relatively little number of hydrogen ions. A weak base is a base that does not completely dissolve in water or only partially ionizes to release hydroxide ions. By reacting a weak acid with a weak base, a salt can be generated.

NH4F is the correct answer because NH4+ is a weak acid and F- is a weak base. When NH4+ is combined with F-, NH4F is formed. NH4F is ammonium fluoride, which is an ionic salt that is made up of ammonium cations (NH4+) and fluoride anions (F-).

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The freezing point of a solution made by dissolving 50.0 g of methyl salicylate in 800 g of benzene is 3.16°C.

The freezing point of a solution can be calculated using the equation: ΔT = Kf·m, where Kf is the freezing point constant, m is the molal concentration of the solution and ΔT is the freezing point depression of the solution.

The molal concentration of a solution can be calculated using the equation: m = moles of solute / kg of solvent. To calculate the moles of solute, we can use the molecular weight of methyl salicylate (138.2 g/mol) and convert the mass of the solute from grams to moles.

m = (50.0 g C7H6O2)/(138.2 g/mol) = 0.361 moles C7H6O2

The molal concentration can now be calculated: m = 0.361 moles C7H6O2 / 0.800 kg benzene = 0.45 molal C7H6O2

Using the molal concentration, we can calculate the freezing point depression: ΔT = Kf·m = (5.12 °C/molal) · (0.45 molal C7H6O2) = 2.31 °C.

The freezing point of the solution can then be calculated: freezing point = (freezing point of pure solvent) – ΔT = (5.47 °C) – (2.31 °C) = 3.16 °C.

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Answer:

A. Yes

B. –176 °C

Explanation:

A. Yes

B. Determination of the new temperature of the gas.

Let the initial pressure be P

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

Initial pressure (P1) = P

Initial temperature (T1) = 19 °C

Final pressure (P2) = ⅓ P1 = ⅓P = P/3

Final temperature (T2) =?

Next, we shall convert 19 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T1) = 19 °C

Initial temperature (T1) = 19 °C + 273

Initial temperature (T1) = 292 K

Since the volume is constant, we can obtain the new temperature of the gas as illustrated below:

Initial pressure (P1) = P

Initial temperature (T1) = 292 K

Final pressure (P2) = P/3

Final temperature (T2) =?

P1/T1 = P2/T2

P/292 = P/3 /T2

P/292 = P/3T2

Cross multiply

P × 3T2 = 292 × P

Divide both side by P

3T2 = (292 × P)/P

3T2 = 292

Divide both side by 3

T2 = 292/3

T2 = 97.33 ≈ 97 K

Finally, we shall convert 97 K to celcius temperature. This can be obtained as follow:

T(°C) = T(K) – 273

T(K) = 97

T(°C) = 97 – 273

T(°C) = –176 °C

Thus, the new temperature of the gas is –176 °C.

The moderately reactive atoms located in the periodic table are fluorine, chlorine, bromine, and iodine which means the halogens family.

The number of balance electrons of the light metals compared to those heavier by listing elements in the order of increasing atomic number.

They are the five non-metals in family 7A of the periodic table. Halogens are chemical elements that form inorganic salts. In the periodic table they are part of group 17 or family 7A.

Halogens are strong oxidants and react mainly with alkali metals (Family I A) which tend to donate an electron. They also react with metals and noble gases (Family VIII A).

The chemical elements are arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom's nucleus, which generally coincides with increasing atomic mass.

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What are halogen metals?

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The molecule that contains 6 atoms comprising a single functional group is Hexanol, under the condition that the given molecule is that of an alcohol.

Its molecules contain 6 carbon atoms. The finishing -ol states an alcohol (the OH functional group), and the hex- stem presents  that there are six carbon atoms in the LCC. The OH group is assembled to the second carbon atom.
Functional groups are considered as specified groups of atoms within molecules that are the reason for characteristic chemical reactions of those molecules . Some examples of functional groups include alcohols, aldehydes, ketones, carboxylic acids, esters, ethers, halogens, amines and amides.
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The complete question
Name a molecule that contains 6 carbon atoms with a single functional group that is an alcohol

All of the several forms of the same chemical element with various masses and unstable nuclei are referred to as radioactive isotopes. Dating once living organisms is an example of a beneficial use of radioactive isotopes.

A chemical element in an unstable state that emits radiation as it decomposes and becomes more stable. Radioisotopes can be created in a lab or in the natural world. They are utilized in imaging studies and therapy in medicine. likewise known as radionuclide.

Isotopes are identical elemental atoms with differing quantities of neutrons. Numerous elements have one or more radioactive isotopes. Due to the instability of their nuclei, they decay and release radiation

Thus, the dating once living organisms is an example of a beneficial use of radioactive isotopes.

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Answer:

Explanation:1 g CH

4

​

,C

2

​

H

6

​

C

3

​

H

8

​

C

4

​

H

10

​

T = 350 K, P = 1 atm

PV=nRT=

M

w×R×T

​

1×V=

58

1

​

×0.0821×350

V=0.495 L

V=495cm

3

Answer:

The formula is CnH2n+1OH

Explanation:

Answer:

13

Explanation:

proton plus neutron equal to atomic mass