Determine the electron-group arrangement, molecular shape, and ideal bond angle(s) for each of the following:
(c) PH₃

Answer:

2.5mg/s

Explanation:

Hope this helps!

Answer:The structure of solids can be described as if they were three-dimensional analogs of a piece of wallpaper. Wallpaper has a regular repeating design that extends from one edge to the other. Crystals have a similar repeating design, but in this case the design extends in three dimensions from one edge of the solid to the other.

We can unambiguously describe a piece of wallpaper by specifying the size, shape, and contents of the simplest repeating unit in the design. We can describe a three-dimensional crystal by specifying the size, shape, and contents of the simplest repeating unit and the way these repeating units stack to form the crystal.

The simplest repeating unit in a crystal is called a unit cell. Each unit cell is defined in terms of lattice points--the points in space about which the particles are free to vibrate in a crystal.

The molarity of the solution is 0.018 M.

For the calculation of molarity, we need to use the formula for molarity, put all values in the formula, and then complete the calculation.

formula of molarity= \(\frac{number of moles}{volume(L)}\) M

volume of solution is 3800ml or 3.8L

number of moles= \(\frac{Given mass}{Molar Mass}\) = \(\frac{4}{58.44}\) = 0.06844

where given mass is the  mass of solute that are present in the solution

Molar mass is also defied as the sum of atomic masses of all atoms present in the molecule.

molarity = \(\frac{0.06844}{3.8}\) = 0.018 M

Hence the molarity of solution is 0.018 M

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The metabolic process known as glycolysis takes place in the cytosol or cytoplasmic matrix of the cell. It is an oxygen-independent process that produces ATP and NADH as energy sources.

In this process, glucose is broken down chemically by enzymes to produce pyruvate, hydrogen ions, and energy.

The glycolysis's general equation is:

Pyruvate is produced by adding D-glucose to ADP, Pi, Pi+NADH, ATP, NADH, H+, and H2O.

The chemical equation as given:

NAD+ x pyruvate y ATP z NADH = glucose + an ADP + b P I + c

By contrasting the provided equation with the general glycolysis equation: 2 = a = b = c = x = y = z

therefore, the net results of glycolysis:

glucose + 2 ADP + 2 P i + 2 NAD⁺ ⟶ 2 pyruvate + 2 ATP + 2 NADH

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it false john weighs 85 pounds. jeff weighs 105 pounds. jake weighs 115 pounds. two of them standing together on the same scale could weigh 200 pounds.

A pounds is defined as 16 ounces, 7,000 grains (or 0.45359237 kg) of avoirdupois weight and 12 ounces, 5,760 grains (or 0.37324171216 kg) of troy and apothecaries' weight. The letter lb comes from the Roman libra, which was the forerunner of the modern pound. The pound, also known as pound-mass, is a unit of mass that is used in both the British imperial and American customary measurement systems.

Balance Analytical These are most frequently discovered in laboratories or other locations where weighing items requires a high level of sensitivity. In analytical balances, mass is measured. Chemical analysis is always based on mass, so the results are never based on localized gravity, which would have an impact on the weight.

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The mass of \(Al_{2} S_{3}\) produced is 15.616 grams.

The reaction taking place is as follows:

\(2Al+ 3S\) →\(Al_{2} S_{3} (s)\)

Moles of Al = mass/molar mass = 10.0g/27.0g/mol

= 0.370 mol

Moles of S = mass/molar mass = 15.0g/(32.065g/mol)

= 0.468 mol

Al and S reacts in the molar ratio of 2:3.

2 moles of Al reacts with 3 moles of S

0.370 moles of Al will react with S = (3/2)*0.370mol

= 0.555 mol

Similarly, 0.468 moles of S will react with Al = 2/3 *0.468mol

= 0.312 mol

Thus, Al is in excess and S is the limiting reactant (some of Al will be left over ,S will completely react)

So, moles of \(Al_{2} S_{3}\) produced=1/3*0.312 mol of S

= 0.104 mol

Mass of \(Al_{2} S_{3}\) produced = moles*molar mass of \(Al_{2} S_{3}\)

= 0.104mol*150.158g/mol

= 15.616 grams

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Answer:

Iconic, neutral, and cation

Explanation:

When a metal and a nonmetal react, the result is a(n) Ionic compound. Ratio of cat ions and anion depends on the ionic charge of each. All ionic compounds come together in the simplest ratio to make a  neutral formula unit and the cation  is always written first in the formula.

The ionic compounds are solids in crystalline form and these are formed by opposite charged ion packing,  formed by the reaction of metals react with non-metals.

Elements can either gain or lose electrons in order to achieve noble gas configuration and these formation of ions helps them gain stability, the structure of ionic compound depend on the relative sizes of the cations and anions.

Ionic compounds are salts, oxides, hydroxides, sulphides, and the inorganic compounds. Ionic solids are held together by the electrostatic attraction between the positive and negative ions.

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The Statement "All colors are transmitted through the drink except for blue which is absorbed by the drink." is correct on what happens to a light as it passes through a blue drink.

Light is a form of electromagnetic radiation that is visible to the human eye. It is a type of energy that travels through space in the form of waves and does not require a medium to propagate. Light is produced by the movement of charged particles and travels at a constant speed of about 299,792,458 meters per second in a vacuum.

When light passes through a blue drink, the liquid absorbs the blue portion of the spectrum and allows the other colors to pass through. This is because the blue pigment in the drink selectively absorbs the blue portion of the spectrum, which is why we perceive the liquid as blue. The other colors in the visible spectrum are transmitted through the drink and are not affected.

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Answer:

The electronic configuration of ions formed are:

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

Explanation:

Lithium metal, Li will lose 1 electron to lithium ion Li+. Chlorine atom, Cl will receive the 1 electron to form the chloride ion Cl- as shown by the following equation below:

Li —> Li+ + e

Cl+ e —> Cl-

Combine both equation

Li + Cl + e —> Li+ + Cl- + e

Cancel out 'e'

Li + Cl —> Li+ Cl-

Thus, we can write the electronic configuration for the reaction as follow:

Before reaction:

Li (3) => 1s2 2s1

Cl (17) => 1s2 2s2 2p6 3s2 3p5

After reaction

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

Therefore, the electronic configuration of the ions formed are:

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

Answer:

Explanation:

4 min 15sec=255 seconds but idk what you actually want me to say what it is equal to as you haven't given anything to compare it to

Answer: Payback time = 0.0075

Explanation: Since payback time is calculated as:

payback time = \(\frac{installation cost}{annual savings}\)

First determine the installation cost:

100 mm thick insulation covers 8.3 m². Then 300 mm covers 24.9 m².

To cover 8.3m² costs £20. Then, the cost to cover 24.9 m² is:

cost = \(\frac{20*24.9}{8.3}\)

cost = £60

The cost of putting the insulation is £120, so the total cost is:

total cost = £60 + £120

total cost = £180

Savings per year per 100 mm thick is £80. For 300 mm, the value of annual savings is:

savings = \(\frac{300*80}{100}\)

savings = 240

payback time = \(\frac{installation cost}{annual savings}\)

payback time = \(\frac{180}{240}\)

payback time = 0.75

The balanced chemical reaction :

GIVEN

• Mass of Potassium chlorate KClO3 = 16 g

• Molecular mass KClO3 = 122,55 g/mol

10 moles KClO3 produces 10 moles KCl

therefore ;

0.131 moles of KClO3 will produce 0.13 moles of KCl

{ take note that the ratio if 1:1 , meaning for every 1 mole of KClO3 , 1 mole of KCL willbe produced }

A B C

a. Mg(12) 2.8.2 -2e- = Mg2+

b. S(16) 2.8.6 +2e- = S2-

c. MgS

d. No, because it is neutral

Answer:

Explanation: the answer is YES

CO(NH2)2  and (NH2)2 CO is the urea

H2 and 02​ are the products of this chemical reaction because of the splitting of water molecule.

The products of this chemical reaction are H2 and 02​ because when the water molecule dissociates or splits hydrogen and oxygen molecules are formed. We know that water is produced from the combination of hydrogen and oxygen.

So we can conclude that H2 and 02​ are the products of this chemical reaction because of the splitting of water molecule.

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The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.

When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.

The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.


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If we add 25.6 g of an unknown molecular compound to the 0.250 kg of benzene, the molar mass of the unknown compound is 148.8 g/mol.

The Molality of the compound is given as :

ΔT = i Kf m

Where,

ΔT = freezing point depression = 3.54 °C

i =  Van't Hoff factor of the Benzene = 1

Kf =  constant of the freezing = 5.12 °C/m

m = molality = ?

m = ΔT / i Kf

m = 3.54 / 1 × 5.12

m = 0.69 mol

molality = moles / mass of benzene

moles = 0.172

The molar mass = mass / moles

The molar mass = 25.6 / 0.172

The molar mass = 148.8 g/mol

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The equation representing the value of the stock, V, after t years is V = 750(1.003)^(4t).To represent the value of the stock, V, after t years, we can use the formula for compound interest:

V = P(1 + r/n)^(nt)

Where:

V is the value of the stock after t years

P is the initial investment (in this case, $750)

r is the annual interest rate (1.2%)

n is the number of times interest is compounded per year (4)

t is the number of years

Substituting the given values into the formula, we have:

V = 750(1 + 0.012/4)^(4t)

Simplifying further:

V = 750(1 + 0.003)^(4t)

V = 750(1.003)^(4t)

Therefore, the equation representing the value of the stock, V, after t years is V = 750(1.003)^(4t).

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A positron forms in the nucleus and is promptly ejected from it, just like the beta particle. In an equation, a positron is represented by the sign e+01. As an illustration, potassium-38 emits a positron and changes into argon-38.

A positron has an electrical charge of +1, the same mass as an electron, and a spin of 1/2.

The three argon (Ar) isotopes that are present in nature are argon-36, argon-38, and argon-40. On the periodic table, argon has an average atomic weight of 39.948 amu.

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The freezing point of the solution is -11.8 °C.

The boiling point of the solution is 103.31 °C.

To determine the freezing point of the solution, we can use the equation:

ΔTf = Kf * m

where:

ΔTf is the freezing point depression,

Kf is the cryoscopic constant (for water, Kf = 1.86 °C/m),

m is the molality of the solution (moles of solute per kilogram of solvent).

First, let's calculate the molality (m) of the solution:

Molar mass of ethylene glycol (C2H6O2):

C = 12.01 g/mol

H = 1.01 g/mol (x 6) = 6.06 g/mol

O = 16.00 g/mol (x 2) = 32.00 g/mol

Total molar mass = 12.01 g/mol + 6.06 g/mol + 32.00 g/mol = 50.07 g/mol

Number of moles of ethylene glycol (C2H6O2) = mass / molar mass

Number of moles = 30.8 g / 50.07 g/mol = 0.615 mol

Mass of water = volume x density = 96.6 mL x 1.00 g/mL = 96.6 g

Now, let's calculate the molality:

Molality (m) = moles of solute / mass of solvent (in kg)

Molality = 0.615 mol / 0.0966 kg = 6.36 mol/kg

Now we can calculate the freezing point depression (ΔTf):

ΔTf = Kf * m

ΔTf = 1.86 °C/m * 6.36 mol/kg = 11.8 °C

To find the freezing point of the solution, subtract the freezing point depression from the freezing point of pure water (0 °C):

Freezing point = 0 °C - 11.8 °C = -11.8 °C

To determine the boiling point of the solution, we can use the equation:

ΔTb = Kb * m

where:

ΔTb is the boiling point elevation,

Kb is the ebullioscopic constant (for water, Kb = 0.52 °C/m),

m is the molality of the solution (same value as calculated before: 6.36 mol/kg).

ΔTb = 0.52 °C/m * 6.36 mol/kg = 3.31 °C

To find the boiling point of the solution, add the boiling point elevation to the boiling point of pure water (100 °C):

Boiling point = 100 °C + 3.31 °C = 103.31 °C

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Answer:

Explanation:

we know that density=mass/volume

mass=240.90 g

volume=200.00 ml

now

density=240.90 g/200.00

density=1.2045 g/ml

another way

1 dm^3 =1000 ml

200.00 ml =200.00/1000

200.00 ml=0.2 dm^3

now density=240.90 g/0.2 dm^3

density=1204.5 g/dm^3

Answer:

60 Miles per Hour

Explanation:

You included no scenario so I will develop a hypothetical that you can reference.

Assuming a car traveled a distance of 450 miles from one place to another in 9 hours with the car travelling 180 of those miles between 6 hours and 9 hours, what was the average speed between those 6 and 9 hours.

The car travelled 180 miles in 6hours - 9 hours.  First find out how many hours this is:

= 9 - 6

= 3 hours

Speed = Distance / Time

= 180 / 3 hours

= 60 miles per hour

Answer:

7.5 hours

Explanation:

avarage speed = min speed + max speed ÷ 2

= 6 + 9 ÷ 2

= 15 ÷ 2

= 7.5

This problem is providing 0.53 g as the mass of lithium acetate that is dissolved in 100 mL of water to make a solution; thus, asking for the resulting type of solution. Hence, since its solubility at 25 °C is about 45 g in 100 mL of water, one infers this solution will be unsaturated according to the following:

In chemistry, the physical limit to the solvation of a solute in a solvent is known as solubility; which is roughly defined as the maximum mass of solute one can completely dissolve into a solvent, without getting any precipitate (solid leftover).

In such a way, when we try to dissolve a mass of a solute, less than the solubility, the solution will be unsaturated, yet supersaturated if the dissolved mass exceeds the solubility and saturated if these two are approximately the same.

Thereby, since the solubility of lithium acetate in 100 mL of water at 25 °C is about 45 g, and the dissolved amount is just 0.53 g, the resulting solution will be unsaturated.

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Answer: No.

Explanation: A negative integer can only be made with 2 negative integers or 1 positive and 1 negative integer.

Answer:

This is the formula for lithium acetate, C2H3LiO2

Answer: 1) The answer is: c) protons and neutrons.

2) The answer is: a) electrons.

Explanation:

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, Much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Electron has -1 charge while proton has +1 charge. Neutron is neutral.

Much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

Therefore, much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

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