Draw the conjugate base for the acid (CH3)2C=OH+ Remember to include charges and non-bonding electrons where
necessary

Answer:

55.85 amu

Explanation:

Let A, B, C and D represent the four isotopes of element X.

The following data were obtained from the question:

Isotope A:

Abundance (A%) = 5.845%

Mass of A = 53.93961 amu

Isotope B:

Abundance (B%) = 91.75%

Mass of B = 55.93494 amu

Isotope C:

Abundance (C%) = 2.123%

Mass of C = 56.93539 amu

Isotope D:

Abundance (D%) = 0.2820%

Mass of D = 57.93328 amu

Average atomic mass of element X =.?

The average atomic mass of X can be obtained as follow:

Average Atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100] + [(Mass of D × D%)/100]

Average Atomic mass = [(53.93961 × 5.845)/100] + [(55.93494 × 91.75)/100] + [(56.93539 × 2.123)/100] + [(57.93328 × 0.2820)/100]

= 3.15277 + 51.32031 + 1.20874 + 0.16337

= 55.84519 ≈ 55.85

Therefore, the average atomic mass of X is 55.85 amu

Answer:

Detrimental- Toxic chemicals leach out of plastic and are found in the blood and tissue of nearly all of us. Exposure to them is linked to cancers, birth defects, impaired immunity, endocrine disruption and other ailments

Beneficial- Plastic packaging helps protect and preserve goods, while reducing weight in transportation,

Answer:

Convection

Explanation:

Convection is the transfer of thermal energy by particles moving through a fluid.

Answer:

convection

Explanation:

trust

Answer:

A. Using materials and design techniques that reduce the negative

environmental impact of a structure

Explanation:

A P E X

Using materials and design techniques that reduce the negative

environmental impact of a structure. Hence, option A is correct.

Green design is the 'creation of buildings which are energy-efficient healthy, comfortable, flexible in use and designed for long life.

The word ‘Green’ represents designs which are eco-friendly and less harmful to humans and other organisms. It helps in the protection of natural resources such as water, air etc.

Green designs are also referred to as techniques and materials that reduce the negative environmental impact of a structure.

Hence, option A is correct.

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Answer:

C

Explanation:

As C would be the wisest choice as being able to remember and use more words than the average human not only opens up your vocabulary but also your chances of writing a better essay using said words.

Answer:

C

Explanation:

Makes it easier to remember and use new words

Answer:

With the use of same chemicals, same gas will be produced while the use of different chemicals, different gases will be produced.

Explanation:

The same gas was produced in each assignment if the same chemicals are mixed with each other while different gases were produced in each assignment when different chemicals are allowed to mix. If every time, same chemicals and same concentration of chemicals are mixed together, the result will be the same means production of same gas but if different chemicals are allowed to mix, then the product will be the production of different gases.

Answer:

a) YES ( Basis : F=100kg/h)

b) composition mass fraction in the bottom stream

(Xm)B = 0.25

(Xp)B = 0.1

(Xw)B = 0.65

Explanation:

a)

Can you set a basis of calculation in this problem? Why or why not?

Yes we can set a basis if calculation in this problem.

A good basis makes the calculation more easier. the problem are given in weight  basis so we can choose basis of feed rate of 100kg/h

BASIS : 100kg/h

b)

given that;

mass flow rate of M in the feeds Mf = 0.55*F = 0.55*100 = 55kg/h

mass flow rate of p in the feeds Pf = 0.05*F = 0.05*100 = 5kg/h

mass flow rate of W in the feeds Pf = 0.40*F = 0.40*100 = 40kg/h

Now Balance

F = T + B

( but T=B)

so F = T + T = 2T

B = T = 50kg/h

TOP

mass flow rate of M in the top Mt = 0.85*T = 0.85*50 = 42.5 KG/H

mass flow rate of P in the top Pt = 0kg/h

mass flow rate of W in the top Wt = 0.15*T = 0.15*50 = 7.5kg/h

balance on M

Mf = Mt + Mb

Mb = Mf - Mt = 55kg/h - 42.5kg/h = 12.5kg/h

Balance on P

Pf = Pb + Pt

Pb = Pf - Pt = 5kg/h - 0kg/h = 5kg/h

Balance on W

Wf = Wt + Wb

Wb = Wf - Wt = 40kg/h - 7.5kg/h = 32.5kg/h

So bottom composition

mass fraction of M in Bottom XmB = Mb/B = (12.5kg/g) / (50kg/h) = 0.25

mass fraction of P in Bottom XpB = Pb/B = (5kg/g) / (50kg/h) = 0.1

mass fraction of W in Bottom XwB = Wb/B = (32.5kg/g) / (50kg/h) = 0.65

Answer:

as gasoline is evaporated, this gasoline still remains as gasoline but in gaseous form when gas is being burned .

Answer:

The yield of the product in gram is [tex]\mathsf{{w_P}=0.26 \ gram}[/tex]

Explanation:

Given that:

the molecular mass weight of the product = 96.2 g/mol

the molecular mass of the reagent (3S)-2,2,-dibromo-3,4-dimethylpentane is 257.997 g

given that the millimoles of the reagent = 2,7 millimoles = [tex]2.7 \times 10^{-3} \ moles[/tex]

We know that:

Number of moles = mass/molar mass

Then:

[tex]2.7 \times 10^{-3} = \dfrac{ mass}{257.997}[/tex]

[tex]mass = 2.7 \times 10^{-3} \times 257.997[/tex]

mass = 0.697

Theoretical yield = (number of moles of the product/ number of moles of reactant) × 100

i.e

Theoretical yield = [tex]\dfrac{n_P}{n_R}\times 100\%[/tex]

where;

[tex]n_P = \dfrac{w_P}{m_P}[/tex]    and [tex]n_R = \dfrac{w_R}{m_R}[/tex]

Theoretical yield = [tex]\dfrac{(\dfrac{w_P}{m_P})}{(\dfrac{w_R}{m_R})} \times 100\%[/tex]

Given that the theoretical yield = 100%

Then:

[tex]100\% =\dfrac{(\dfrac{w_P}{m_P})}{(\dfrac{w_R}{m_R})} \times 100\%[/tex]

[tex]\dfrac{w_P}{m_P}=\dfrac{w_R}{m_R}[/tex]

[tex]{w_P}=\dfrac{w_R \times m_P}{m_R}[/tex]

where,

[tex]w_P[/tex] = derived weight of the product

[tex]m_P =[/tex]the molecular mass of the derived product

[tex]m_R =[/tex] the molecular mass of the reagent

[tex]w_R[/tex] = weight in a gram of the reagent

[tex]{w_P}=\dfrac{w_R \times m_P}{m_R}[/tex]

[tex]{w_P}=\dfrac{0.697 \times 96.2}{257.997}[/tex]

[tex]\mathsf{{w_P}=0.26 \ gram}[/tex]

Answer:

the strong nuclear force happens in the neuclus

Answer: Reactions: A, B and F

Explanation: Gibbs Free Energy, symbol G, combines Enthalpy (sum of internal energy) and Entropy (measure of how much the energy of atoms and molecules become spread out in a process).

The change in free energy (ΔG) is the sum of enthalpy and the product of temperature and entropy of the system.

With free energy, it is possible to determine if a reaction is spontaneous, i.e., happens wthout external energy, or non-spontaneous.

If ΔG is negative, reaction is spontaneous. If ΔG is positive, reaction is non-spontaneous.

Analysing each ΔG of the reactions above, reactions A, B and F's Gibbs Free energy are negative, so these 3 are spontaneous.

Answer:

boiling point

Answer:

Silicon tetrachloride

Dinitrogen tetroxide

The name of the compound SiCl₄ is named silicon tetrachloride and N₂O₄ is named dinitrogen tetroxide.

SiCl₄ is named silicon tetrachloride. It is composed of one silicon atom (Si) bonded to four chlorine atoms (Cl). The prefix "tetra-" indicates the presence of four chlorine atoms bonded to the central silicon atom.

N₂O₄ is named dinitrogen tetroxide. It consists of two nitrogen atoms (N) bonded to four oxygen atoms (O). The prefix "di-" indicates the presence of two nitrogen atoms, and the suffix "-tetraoxide" indicates the presence of four oxygen atoms.

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Answer:

0

Explanation:

did research

Answer:

1.4 g H₂O

Explanation:

In a reaction, the reactants are usually not present in exact stoichiometric amounts, that is, in the proportions indicated by the balanced equation. Frequently a large excess of one reactant is supplied to ensure that the more expensive reactant is completely converted to the desired product. Consequently, some reactant will be left over at the end of the reaction. The reactant used up first in a reaction is called the limiting reagent, because the maximum amount of product formed depends on how much of this reactant was originally present. When this reactant is used up, no more product can be formed.

Answer:

isotope of the same element differ

Explanation:

isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number.

Answer:A integer is a whole number.

An adult with the flu has a temperature of 102°F

A brain contains  neurons (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 10 to 8)

The time for a nerve impulse to travel from the feet to the brain is  s. (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 0 to -2)

Explanation: i am sorry for being 2 year late :(

i hope this answer your question if this is wrong or correct please let me know

Answer:

Q = 7.0

Q = kc. The reaction is in equilibrium

Explanation:

Based on the reaction:

Br₂ + Cl₂ ⇄ 2BrCl

Equilibrium constant of the reaction, kc, is the ratio of equilibrium concentrations products over reactants powered to its reaction coefficient:

Kc = [BrCl]² / [Br₂] [Cl₂] = 7.0

Now, reaction quotient, Q, is write as the same Kc but the concentrations are actual concentrations:

Q = [BrCl]² / [Br₂] [Cl₂]

Replacing:

Q = [0.00415M]² / [0.00366M] [0.000672M]

Q = 7.0

Now, as Q = Kc = 7.0, the reaction mixture is in equilibrium

Right now it's written in scientific notation, so you can just move the decimal place in 3.8 to the right 3 times (as it is times 10 to the third power) to get 3,800g.

The measurement 3.8 x 10³ grams could also be written as 3.8 kilograms.

A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.

As given in the problem we have to convert the measurement of 3.8 x 10³ grams into some different units,

1000 grams = 1 kilograms

1 gram = 1 /1000 kilograms

3.8 x 10³ grams = 3.8 x 10³ ×1 /1000 kilograms

                          =3.8 kilograms

Thus, the measurement 3.8 x 10³ grams could also be written as 3.8 kilograms.

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Answer:

no it cant

Explanation:

Answer:

Evaporation is a change of phase from liquid to gas explained as follows : When particles in the liquid phase are heated, they gain kinetic energy and move faster and further apart.

Answer:

Mass is a measure of the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg), but smaller masses may be measured in grams (g).

Answer:

Explanation:

# moles that exist in 1.9 X 10 23 =

             =  # of atoms/# of Avogadro 's num

             =    1.9 X 10 23 / 6.02x10 23

              = 0.266 mole of Pb

now we calculate the mass

   mass of lead = # mol x m.wt

                       =    0.266 X 106.4

                       = 28.30 gram

Answer:

1.1 L

Explanation:

Volume and pressure are inversly proportional to each other meaning as volume increase, pressure decreases or the other way around. Use the equation V1P1=V2P2. So, it'll be (2.5L)(94.0kpa)=(207kPa)(V2). Thereby it is (2.5*94.0)/207= V2 = 1.1L. Don't forget your sigfigs which will be to 2 sigs.

Answer:

Empirical formula: C₂SH₄

Molecular formula: C₄S₂H₈

Explanation:

The empirical formula is the simplest whole ratio of atoms presents in an element.

The compound contains C, S and H, its empirical formula is CₐSₓHₙ. We need to determine a, x and n solving for the moles of each element, thus:

Moles H₂O - moles H-:

PV/RT = n

At STP, P is 1atm, and T is 273.15K:

1atm*44.8L / 0.082atmL/molK*273.15K

moles H₂O = 2 moles water = 4 moles of H

Because 1 moles of water contains 2 moles of H

Moles CO₂ = moles C:

88.0g CO₂ * (1mol / 44g) = 2 moles CO₂ = 2 moles C

The mass of carbon is:

2 moles * (12g/mol) = 24g

Mass of hydrogen:

4 moles * (1g/mol) = 4g

The mass of S is:

60.04g - 24g - 4g = 32.04g = 1 mole of S

Empirical formula is:

Now, the moles of the compound in the final experiment are:

PV / RT = n

2.33atm*3.57L / 0.082atmL/molK*298.15K = 0.34 moles

-25°C = 298.15K. In gas laws you must use absolute temperature given in Kelvin-

These moles are in 35.0g. The molar mass of the compound is:

35.0g / 0.34 moles = 102.9g/mol

As the empirical formula is C₂SH₄ and weighs 60g/mol. Twice the empirical formula are the molecular formula:

The Molecular formula of the compound: C₄S₂H₈

[tex]n=\frac{PV}{RT}[/tex]

At STP, P is 1atm, and T is 273.15K:

[tex]n= \frac{1atm*44.8L}{0.082atmL/molK*273.15K}[/tex]

Moles H₂O = 2 moles water = 4 moles of H

As, 1 moles of water contains 2 moles of H

88.0g CO₂ * (1mol / 44g) = 2 moles CO₂ = 2 moles C

We know,

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

Mass of carbon is: [tex]2 moles * (12g/mol) = 24g[/tex]

Mass of hydrogen is: [tex]4 moles * (1g/mol) = 4g[/tex]

Mass of sulphur is: [tex]60.04g - 24g - 4g = 32.04g[/tex] = 1 mole of S

The derived Empirical formula will be: C₂SH₄

Now, the moles of the compound in the final experiment are:

[tex]n= \frac{PV}{RT}\\\\n=\frac{2.33atm*3.57L}{0.082atmL/molK*298.15K}\\\\ n= 0.34 moles[/tex]

These moles are in 35.0g. The molar mass of the compound is: [tex]\frac{35.0g}{0.34 moles} =102.9g/mol[/tex]

As the empirical formula is C₂SH₄ and weighs 60g/mol.

The empirical formula is two times the molecular formula: C₄S₂H₈

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Answer:

O D. Hadalpelagic is the answer.

Answer:

4366.8 grams or 4.4 kg

Explanation:

Density = Mass / Volume

Mass = Density x Volume

M = 6.7 x 6.8 x 4.3 x 22.29

M = 4366.8 g

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