If 1.2 moles of a gas occupy a volume of 2.0 L at 300 K, what is the pressure of the gas? a) 15 atm b) 720 atm c) 0.4 atm.

The degree of substitution of an alkene refers to the number of substituents attached to the carbon atoms in the double bond. In this case, you haven't provided any specific alkene, so I cannot determine the degree of substitution. However, I can explain the options you mentioned.

Monosubstituted means one substituent is attached to each carbon atom of the double bond. Disubstituted means two substituents are attached to each carbon atom. Trisubstituted means three substituents are attached to each carbon atom. Tetrasubstituted means four substituents are attached to each carbon atom.

To determine the degree of substitution, you need to identify the alkene and count the number of substituents attached to each carbon atom of the double bond.

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Answer:

Heterogeneous mixtures are not uniform throughout.

Explanation:

Heterogeneous mixtures are not uniform throughout.

Answer:

a one rotation of the planet on its axis

Explanation:

The two types of motion that planets undergo are;

1) rotation of the planet about its axis

2) revolution of the planet around the sun.

In every planet there are days as shown in the image attached to the question. However, the length of day in each planet is determined by the time required for the planet to complete one rotation on its axis.

It takes the earth 1 earth day (24 hours) to complete rotation on its axis.

The volume of air at 273 K would be 0.67 L by Gas Law. The ideal gas law, a state equation for all gases, states: PV is equal to nRT, where n is the number of moles of the gas and 8.314 joules per kelvin per mole is the universal (or perfect) gas constant.  

According to the Ideal Gas Law, all gases have an equal number of molecules when they are at the same temperature, pressure, and volume (but not the same mass)

V1=0.5 L

T1=203 K

T2 = 273 K

V2 = unknown.

Now, \(\frac{V1}{T1}\) = \(\frac{V2}{T2}\)

So,

0.5L/203 = V2/273

V2= 0.67 L

So, Volume of gas will be 0.67 L.

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4.25 g Zn did react if 10.0 g of zn powder is added into a solution of silver nitrate, agno3. the total mass of the metallic solid recovered at the end of the reaction is 12.32 g.

So the equation I got what

Zn (s) + 2AgNO3 (aq) -> 2Ag (s) + Zn(NO3)2 (s)

I think the zinc nitrate is solid because the question asks about a metallic solid.

Then,

12.32 g X 1 mol/189.41 g Zn(NO3)2 = .065 mol Zn(NO3)2

Then to find the original Zn,

.065 mol X 1 mol Zn/1mol Zn(NO3)2 = .065 mol Zn

.065 mol Zn X 65.39 g/1 mol = 4.25 g Zn.

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The effect on the rate of reaction for this SN1 process when doubling the concentration of t-butyl bromide is an increase by a factor of 2, while quadrupling the concentration of methanol will have no impact on the rate.

In the solvolysis of t-butyl bromide in methanol, t-butyl methyl ether is produced through an SN1 reaction. When discussing the rate of an SN1 reaction, it's important to note that it is a two-step process involving the formation of a carbocation intermediate. The rate-determining step (RDS) is the first step, which involves the ionization of t-butyl bromide to form a carbocation and a bromide ion.

The rate of an SN1 reaction is directly proportional to the concentration of the substrate (t-butyl bromide) and independent of the concentration of the nucleophile (methanol). Thus, doubling the concentration of t-butyl bromide will double the rate of reaction, as it increases the availability of the substrate for ionization.

On the other hand, quadrupling the concentration of methanol will not affect the rate of the reaction, as it is not involved in the RDS. Methanol reacts with the carbocation in the second step, which is a fast step and does not determine the overall rate.

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Answer:

its c I think C)

The reason for this is due to the phenomenon called "Charging by Induction". What that means is that when something with a charge, for example a negative charge, is brought near an uncharged one, it induces the opposite charge onto it (positive in this case) and therefore since opposites attract, it attracts it.

The reason for this is that since, just like a positive magnet rejects and pushed away like charges, the electrons hold a negative charge, they push away any electrons that may be in the neutrally charged item causing only protons to be left, thus creating an oppositely charged object. Or vice versa.

So whatever charge the object has, it induces the opposite charge into the uncharged object, causing the charges to move only in the uncharged one.

Explanation:

Answer:

yes, it does.

Explanation:

It is also used to test acidic like solutions.

Answer:

It is true.

Explanation:

hope helps!!!!!!!!!!!!!!!!!!

The initial volume is equal to the value of nRT/P when the pressure is 800.0 mm Hg, so the initial volume is 0.50 l.

We can use the ideal gas law to solve this problem: PV = nRT, where P is the pressure, V is the volume, n is the amount of substance, R is the ideal gas constant, and T is the temperature. Since the temperature is constant, we can assume that the value of nRT is also constant.

We can rearrange the equation to find the volume: V = (nRT/P).

First, we can calculate the value of nRT/P for the initial volume, 740.0 mm Hg:
(nRT/740.0) = 0.50.

Now, we can solve for nRT/P when the pressure is 800.0 mm Hg:
(nRT/800.0) = 0.50.

The initial volume is equal to the value of nRT/P when the pressure is 800.0 mm Hg, so the initial volume is 0.50 l.

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Answer:

He put segregationists in charge of federal agencies...

Explanation:

...

Answer:

He placed segregationists in charge of federal agencies.

Explanation:

Answer:

Atomic theory is. A

Explanation:

Subject to change if new information is discovered. B. A solution to the problem of differing isotopes. C. Unchanged able D. A descriptive table that lists all of the element

I hope this answered your question.

Answer:

A

Explanation:

Heroine destroying the body system

Answer:

KBr

Explanation

KBr is an ionic compound which have very high BP since they exist as 3D crystals

Methyl Bromide, CH3Br.  is a covalent compound which have low BP since they exist as individual molecules

Due to the hydrogen bonding between the molecules of ethanol and water, it is True.

Water and ethanol form weak hydrogen bonds with aromatic hydrogen atoms and strong hydrogen bonds with the hydroxyl, carbonyl, and ether groups in chrysin/galangin. Although less frequently than in water, ethanol molecules can form hydrogen bonds with one another. The fact that there is only one hydrogen with a significant Positive charge in each ethanol molecule limits the hydrogen bonding. Between adjoining hydrogen and oxygen atoms of nearby water molecules, hydrogen bonds are formed. A bond called a hydrogen bond is produced by the attraction between individual water molecules.

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There are 26 needed electrons are in the chlorate ion ClO₃⁻.

The chlorate ion contains one chlorine atom along with three oxygen atoms. In addition, the ClO₃⁻ ion has a  -1 charge.

The periodic table has groups for oxygen and chlorine at positions 7 and 6, respectively. The valence shell of chlorine has seven electrons. Six electrons contain the valence shell of the oxygen atom.

With a charge of -1, the chlorate ion contains one extra electron than a neutral ClO₃ molecule. A total of 26 valence electrons make up the ClO₃⁻ ion.

The ability of having greater valance is important. Chlorine can show valence 7. But, oxygen's maximum valence is 2. Therefore chlorine has more chance to be the center atom

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The frequency of UV light with a wavelength of 2.54 x 10^-7m is 1.18 x 10^15 Hz.

The frequency of UV light with a wavelength of 2.54 x 10-7m can be calculated using the formula:

frequency = speed of light / wavelength

The speed of light is a constant value of approximately 3.00 x 10^8 m/s.

Therefore, frequency = 3.00 x 10^8 m/s / 2.54 x 10^-7m = 1.18 x 10^15 Hz.

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Answer:

n = 1.14 mol

Explanation:

Hello there!

In this case, according to the ideal gas law:

\(PV=nRT\)

It is possible to solve for the moles of the gas given the volume, temperature and pressure:

\(n=\frac{PV}{RT}\)

Thus, we plug in 14.0 L, 300 K and 2.0 atm to obtain:

\(n=\frac{2.0atm*14.0L}{0.08206\frac{atm*L}{mol*K}*300K}\\\\n=1.14mol\)

Best regards!

Answer:

(i) In a bond amortization schedule, the book value represents the remaining amount of the bond principal that hasn't been paid off at a given point in time. When a bond is first issued, its book value equals its face value. As payments are made over the life of the bond, a portion of these payments reduces the book value. By the end of the bond's life, its book value will be zero, as the entire principal will have been paid off.

(ii) The formula for the book value B at time k, where k is the number of periods elapsed, is B = C + Cg - jan-kj.

Here:

- C is the redemption amount,

- g is the modified coupon rate per period,

- j is the yield rate per period, and

- a_n-kj is the present value of an annuity immediate with n - k periods at the yield rate j.

This formula states that the book value at any time k is the redemption amount plus the present value of the future coupon payments (Cg), minus the present value of the annuity that represents the repayments of the bond (jan-kj).

The amortized amount at time k is the change in the book value from time k-1 to time k, plus the coupon payment at time k. It represents the portion of the bond's principal (and interest) that has been repaid up to time k.

(iii) If K is defined as the present value of the redemption value C, according to the Makeham formula, (C-K) would represent the difference between the redemption value of the bond and its present value. This difference is the amount of interest that will accumulate over the life of the bond. In other words, (C-K) can be interpreted as the total interest that the bondholder will earn from holding the bond until redemption, assuming that all coupon payments are reinvested at the yield rate j.

Explanation:

1 . 3 3 7 5 × 1 0 2 3 f o r m u l a u n i t s

for earth quake write, a disturbance in a suburban city has cause a massive earth quake and many problems for the citizens living there, add what you want after that

hope this helps :D

Answer:

wow

Explanation:

dang

The empirical formula of the compound CH₂O.

m(CO₂) = 0.897 g; mass of carbon dioxide

n(CO₂) = 0.897 g ÷ 44 g/mol

n(CO₂) = n(C) = 0.0203 mol; amount of carbon in the compound

m(C) = 0.0203 mol × 12 g/mol

m(C) = 0.243 g; mass of carbon in the compound

m(H₂O) = 0.365 g; mass of water

n(H₂O) = 0.365 g ÷ 18 g/mol

n(H₂O) = 0.0203 mol; amount of water

n(H) = 2 × n(H₂O) = 0.0406 mol; amount of hydrogen in the compound

m(H) = 0.0406 g; mass of hydrogen in the compound

m(O) = m(compound) - m(C) - m(H)

m(O) = 0.328 g; mass of oxygen in the compound

n(O) = 0.328 g ÷ 16 g/mol

n(O) = 0.0203 mol; amount of oxygen in the compound

n(C) : n(H) : n(O) = 1 : 2 : 1

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In the given reaction, 4 moles of KO2 react to produce 3 moles of O2. Therefore, if 10.5 moles of carbon dioxide (CO2) are used at STP, an equal amount of oxygen (O2) is produced. Hence, 10.5 moles of O2 will be generated.

According to the balanced chemical equation, the reaction 4 KO2(s) + 2 CO2(g) → 2 K2CO3(s) + 3 O2(g) shows that for every 4 moles of KO2, 3 moles of O2 are produced. Therefore, the molar ratio between KO2 and O2 is 4:3.

Since 10.5 moles of CO2 are used, we can use the stoichiometry of the reaction to determine the amount of O2 produced. As the reaction equation does not involve CO2, the amount of CO2 used does not directly affect the production of O2. Thus, 10.5 moles of CO2 will yield an equal amount of O2, resulting in 10.5 moles of O2 being produced at STP.

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Answer:

soil

Explanation:

Answer:

We don't know what solvent X and solvent Y are, but from the chart, we can see that in solvent X, hydrochloric acid can conduct electricity (bulb lights up), and react with calcium carbonate.

So, we can say the electrical conductivity when HCl is dissolved in solvent X is high, and when HCl is dissolved in solvent Y, the electrical conductivity is low (because light bulb doesn't light up).

Additionally, in solvent X, HCl ionizes, this shows the property of acids: reacts with carbonates to give CO2 (because CO2 reacts with lime water to make it cloudy).

In solvent Y, HCl does not ionize, so there is no reaction between acid and calcium carbonate.

Limestone can weather chemically extremely well via a process called Dissolution

option A

Limestone is a highly good candidate for dissolution, a sort of chemical weathering. A specific sort of rock is limestone. We have been discussing limestone's chemical weathering here. Any modification to the chemical molecular structure of soil and rocks is referred to as chemical weathering.

The dissolving process, in which the limestone is broken down, is how limestone undergoes chemical weathering. As a result, the pH, alkalinity of the stone, and the amount of dissolved inorganic carbon in the water all rise. This decreases a bed's supply of limestone.

Rainwater, which includes a weak carbonic acid, combines with limestone to cause chemical weathering, which is the main cause of erosion in limestone locations.

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Answer:

Willow is correct because as things age and mature more, usually the more better they are.

Explanation:

To elaborate, you can perceive the development of the modern day atomic model as one aging and maturing. There's usually a correlation between age/maturity and knowledge, the same is true for the atomic model and other scientific theories.

A temperature of -280°C is impossible because it is below absolute zero which is the lowest possible temperature that can be reached.

Absolute zero is defined as -273.15°C or 0 Kelvin.

The electronegativity periodic table is a chart that arranges elements according to their electronegativity, which is a measure of an atom's ability to attract electrons to itself. Electronegativity is a chemical property that reflects the relative tendency of an atom to draw electrons towards itself when it forms a chemical bond with another atom.

The electronegativity values are usually determined using the Pauling scale, which was developed by Linus Pauling and is widely used in chemistry. In this scale, the electronegativity of an element ranges from 0.7 for cesium to 4.0 for fluorine, with increasing electronegativity moving from left to right across a period and increasing as one moves down a group.

The electronegativity values can be useful in understanding chemical bonding and the behavior of molecules. For example, elements with high electronegativity values tend to form ionic bonds, while elements with low electronegativity values tend to form covalent bonds. Additionally, the electronegativity difference between two bonded atoms determines the type of bond, with larger differences indicating polar covalent bonds and smaller differences indicating nonpolar covalent bonds.

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The molecular geometry of the central atom in XeF4 is expected to be octahedral.

According to the VSEPR (Valence Shell Electron Pair Repulsion) model, the molecular geometry of a molecule is determined by the repulsion between electron pairs in the valence shell of the central atom. In XeF4, xenon (Xe) is the central atom and it has six valence electrons. There are four fluorine (F) atoms bonded to the Xe atom, each with a single bond, and two lone pairs of electrons on the Xe atom. This arrangement leads to an octahedral geometry, where the four F atoms are located at the corners of a square plane, and the two lone pairs are located above and below the plane. The VSEPR model predicts that the electron pairs will try to maximize their distance from each other, leading to this specific geometry.

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Answer:

37

Explanation:

( 98.6 - 32 ) × 5(100c) ÷ 9(180f) = 37