Entropy measures:
a. Temperature at constant pressure
b. Temperature at constant volume
c. Temperature as pressure increases
d. Temperature as pressure decreases
e. Chaotic messiness

Answer:

False

True

True

False

False

True

Explanation:

Ideal behavior of gases is observed at high temperature and low pressure when the gas molecules are isolated from each other.

According to the kinetic theory of gases, gases occupy negligible volume and do not exert significant attractive forces on each other.

The average velocity of gases at constant temperature depends on molecular mass. Heavier molecules possess smaller average velocity than lighter molecules at constant temperature.

At constant temperature, molecules of different gases have the same average kinetic energy but different average velocities since they have different molecular masses. So, the average kinetic energy of gas molecules only depends on temperature.

Answer:

Two Negative Charges

Explanation:

C. Two negative charges

Given condition: An atom gains two electrons during the formation of a bond.

As we know gaining an electron results in a negative charge and here two electrons being gained.

Therefore, the charge on it after gaining two electrons will be two negative charges.

Thus, the correct option is option C.

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Answer:

Kc = [B₃]²/[A₂]³  = 0.40

Explanation:

3A₂ ⇄ 2B₃  

Given at equilibrium =>  [A₂] =2.5 and [B₃] = 2.5

Kc = [B₃]²/[A₂]³ = (2.5)²/(2.5)³ = (2.5)⁻¹ = 0.40

Answer:

1

Explanation:

Answer:

Top answer:

The maximum mass of water (H₂O) produced from the reaction between

Explanation:

Gaseous methane ch4 will react with gaseous oxygen o2 to produce gaseous carbon dioxide co2 and gaseous water h2o . suppose 1.44 g of ...

The correct statement is one person performs the work in less time than the other.

Power is a measure of the rate at which work is done. It is calculated by dividing the amount of work done by the time taken to do the work.

P = E/t

where;

Therefore, if two people are moving boxes into a moving truck, the person who moves more boxes in a shorter amount of time has more power than the other person.

Thus, the correct statement will be "One person performs the work in less time than the other" which best explains how one can have more power than the other.

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Answer:

Explanation:

poop

A 4.08 g sample of a compound composed of nitrogen and oxygen contains 3.02 g of oxygen. The empirical formula is N₄O.

The simplest whole number ratio of atoms in a chemical molecule is its empirical formula. Sulfur monoxide's empirical formula, SO, and disulfur dioxide's empirical formula, S2O2, are two straightforward examples of this idea.

The simplest whole-number ratio of the atoms in a compound is shown by empirical formulae, the number of each type of atom in a molecule is shown by molecular formulas, and the bonds between the atoms in a molecule are shown by structural formulas.

Given;

N = 4.08g−3.02g

=1.06g

O = 3.02g

Determine moles of element by dividing the mass of  element by its molar mass.

N = 1.06gN / 14g/mol

=0.0757 mol N

O = 3.02 g O / 16 g mol

=0.188 mol O

Determine mole ratio by dividing the moles of element by the least number of moles.

N = 0.0757 mol / 0.188 mol

=4.01 ≈4

O = 0.188 mol / 0.188

=1.00 =1

The empirical formula is N₄O.

The name of  compound is nitrosylazide

Thus, The empirical formula is N₄O.

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Answer:

The answer is the skin of the apple

The number of solute (stock solution) needed are 15 mL solute and the number of solvents (water) is needed 10 ml. The correct option is a.

Molarity is the measure of the concentration of any solute per unit volume of the solution.

Given that the 25 mL of a 60 mg/mL solution

Dose in hand = 0.5 g / 5ml =

500 mg / 5ml = 100 mg/ml

D= 60 mg x 25 = 1500 mg

Molarity = n / V

1500 mg / 100 mg/ml = 15 ml solute

The number of solutes then minus by the total stock supply

15 - 5 ml = 10 ml solvent

Thus, the correct option is a. 15 mL solute; 10 mL solvent.

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Answer: Br-CH₂-CH₂-C≡N (3-bromopropanenitrile)

Explanation:

The question tells us to " Deduce the identity of the following compound from the spectral data given. C3H4BrN: H NMR, δ 2.98 (2H, triplet), 3.53 (2H, triplet) 13C NMR, δ 21.05 (triplet), 23.87 (triplet), 118.08 (singlet) (ppm):JR, 2963, 2254 cm" Express your answer as a chemical formula".

Answer: Another Alternative to this is seen below

The Double Bond Equivalent of C₃H₄BrN = 3+1-4/2-1/2+1/2 = 2

2254 cm-1 Vc ≡N [IR analysis]

2963.4 = sp³Vc-H streek [IR analysis]

where the first CH₂ = b = 2.98 (2H,triplet) and

the second CH₂ = a = 3.53 (2H,triplet)

Note:  where both are 1HNMR.

where C = c = 118.08 (singlet)

CH₂ = b = 21.05 (triplet)

CH₂ = a = 23.87 ( triplet)

Note: where all are 13CNMR

Important:

I have attached a copy of the solution to enhance better understanding in case the typed solution isn't clear enough.

Answer:

.04 cg/L

Explanation:

Answer:

16

Explanation:

Because the sum of all electron in that compound should be 41 and as it has one electron extra ,total no. of electrons are 42 .

So if we add 26 +16 we get 42

Hence it's correct answer

Answer:

C) Tells you the identity of the atom

Explanation:

Two types of atoms can never have the same atomic number. The atomic number is a unique feature of an element.

Answer:

the second option

Explanation:

look at the distance where the meet up at the house and the go to school

Answer:

There are fewer oxygen atoms in the equation than hydrogen or carbon.

Explanation:

PLATO

Answer:29.232

Explanation:6.023x10^23

Answer:

B

Explanation:

hydrogen only has one electron/molecule in it's only shell so it can get together and make a bond

Hg = (3.2 : 4.2) x 100% = 76.19%

O = (1 : 4.2) x 100% = 23.81%

Answer:

head

Explanation:

The temperature is a unit of measurement for the average kinetic energy of the particles contained within an object.

All substances of mass, according to the kinetic theory of matter, are composed of constituent particles in a physical state that reflects their kinetic energy. Indeed, some generalizations may be taken, such as the fact that when the kinetic energy of the constituents increases, the substance transitions from the solid phase to the liquid phase, then to the gas phase, and finally to the plasma state.

Given what we know, we can confirm that option A is correct in that Stronger IMFs lead to stronger adhesion, producing rounder drops with a smaller diameter.

IMF is the acronym used to describe intermolecular forces. These forces include all of the forces that bind molecules together, of which water has plenty. This bonding force creates a high adhesion and thus gives water its surface tension which makes it stay together in the shape of a drop.

Therefore, we can confirm that stronger IMFs lead to stronger adhesion, producing rounder drops with a smaller diameter, and therefore that option A is correct.

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Answer:

B. When one element replaces another element in a compound during a chemical reaction

Answer:

oxygen-16 is a stable isotope of oxygen, having 8 neutrons and 8 protons in its nucleus. It has a mass of 15. u

Explanation:

To determine the number of molecules in 280.4 g of SO3, we need to use the following steps:

Calculate the molar mass of SO3:

S = 32.06 g/mol

O = 3 x 16.00 g/mol = 48.00 g/mol

Molar mass of SO3 = 32.06 + 48.00 = 80.06 g/mol

Use the molar mass to convert grams to moles:

280.4 g SO3 x (1 mol SO3/80.06 g SO3) = 3.502 mol SO3

Use Avogadro's number (6.022 x 10^23 molecules/mol) to convert moles to molecules:

3.502 mol SO3 x (6.022 x 10^23 molecules/mol) = 2.106 x 10^24 molecules of SO3

Therefore, there are approximately 2.106 x 10^24 molecules of SO3 in a 280.4 g sample of SO3.

Answer:

so so

Explanation:

this your question?? <_>

Answer:

2CH3OH + 3O2 --> 2CO2 + 4H2O

This is called Combustion of Methanol

Explanation:

Count the numbers of atoms on each sides and try to get the same amount of quantity on each sides, so you'll eventually get "balanced".

or

Watch this video: "How to Balance CH3OH + O2 = CO2+ H2O (Combustion of Methanol)"

Good luck with future work! Keep studying chemistry!

- D

Answer:

3 x 9 x 2 = 54 meters

10 x 4 x 7 = 280 meters

Explanation:

Multiply the length, the width, and the height.

You can multiply them in any order to get the same different result. The formula for finding the volume of a rectangular prism is the following: Volume = Length * Height * Width, or V = L * H * W.

Answer:35 cubes with a length of 7 meters, height of 1 meter, and width of 5 meters.

What is the length of the figure?

✔ 7 m

What is the width?

✔ 5 m

What is the height?

✔ 1 m

What is the number of cubes?

✔ 35 cubes

What is the volume?

✔ 35 cubic meters

Explanation:

The acceleration of the car is -2.3m/s².

Acceleration is the rate at which the direction and speed of motion change over time. It is said to have been accelerated when something changes its direction and moves faster or slower. Motion on a circle accelerates even when the speed is constant because the direction is constantly changing.

Velocity is the rate at which displacement changes. The rate at which speed changes is known as acceleration. Because it consists of both magnitude and direction, velocity is a vector quantity. Since acceleration is merely the rate at which velocity changes, it too is a vector quantity.

v = u +at

0 = 35 + a×15

15a = -35

a = -35/15

a = -2.3m/s².

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Answer:

B. -2.3 m/s²

Explanation:

To answer this question, we have to use the following formula:
\(\boxed{a = \frac{v - u}{t}}\),

where:

• a ⇒ acceleration

• v ⇒ final velocity

• u ⇒ initial velocity

• t ⇒ time taken for the change in velocity to occur

From the question, we know that initially, the car was travelling at 35 km/h. Therefore, u = 35 km/h. The question also tells us that the car comes to a full stop, meaning its final velocity is 0 m/s. Therefore, v = 0 km/h. It takes the car 15 seconds to stop, so t = 15 s.

Using the information above and substituting it into the formula, we can calculate the acceleration of the car:

\(a = \frac{0 - 35}{15}\)

  = -2.3 m/s²

Therefore, the acceleration of the car is -2.3 m/s², and the correct answer is B.

Answer:

Chemical bonds hold molecules together and create temporary connections that are essential to life. Types of chemical bonds including covalent, ionic,

Explanation:

Ionic bond will form by transferring the electrons , covalent bond formed by sharing the electrons while hydrogen bond will be formed by bond between electronegative atom and hydrogen molecule.

The chemical bond is formed when electrons are transferred from one atom to another. An ionic bond is the name for this type of relationship. Their melting and boiling points are quite high. Ionic chemicals, in other words, seem to be non-volatile.

When one non-metal reacts with just another non-metal, electrons are shared across their atoms, resulting in the development of a covalent bond. Among two or more atoms with same non-metal, a covalent connection can be established.

Hydrogen bonding is just a sort of dipole-dipole attraction that occurs between molecules rather than a covalently link with a hydrogen atom.

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