Complete the following calculations. Include units in your answers. Report your answer to 1 decimal place.

1. (100m) / (26 s)
2. (8.1 kg) / (0.45 cm x 0.55 cm)
3. (5.1 m) (4.5 m)

Please help! And please explain how you solved it! Thank you!!!!

Answer:

Explanation:

Entropy is the measure of randomness of a system . When heat is added to a gas , gas molecules become more random and therefore , their entropy increases . Hence at higher temperature , entropy increases and randomness increases due to addition of heat .

Hence when a gas molecules become more ordered that means entropy decreases . Hence heat is withdrawn from the system . Hence temperature of the system is decreases .

In the given case , gas molecules are made more ordered that means their temperature is decreased to lower the  entropy before they are exhausted .

Explanation:

Intermolecular forces hold multiple molecules together and determine many of a substance's properties. All of the attractive forces between neutral atoms and molecules are known as van der Waals forces, although they are usually referred to more informally as intermolecular attraction.

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

Heat transfer is the movement of thermal energy from a temperature that is higher to one that is lower.

The energy that exists in a system and controls its temperature is known as thermal energy. Heat is thermal energy in motion. Thermodynamics is a comprehensive field of physics that examines how heat and work are transferred between diverse systems.

The energy that results from atoms and molecules moving around within a substance is known as thermal energy, often known as heat. When these particles move more quickly, heat is produced. Geothermal energy is the earth's heat energy. Energy held within motion is referred to as motion energy.

To know more about thermal energy visit:

https://brainly.com/question/18989562

#SPJ1

The temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K .

The temperature of a given gas can be calculated using the ideal gas law equation:

PV = nRT

Where;

1.4948 × 92.202 = 1.7379 × 0.0821 × T

137.82 = 0.142T

T = 137.82 ÷ 0.142

T = 965.69K

Therefore, the temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K.

Learn more about temperature at: https://brainly.com/question/11464844

#SPJ1

Answer:

B

Explanation:

2.8.1 Na

2.8.2 Mg

and so on and so forth

The volume of KOH required for the neutralization of acid has been 38.9 ml. Thus, option B is correct.

Neutralization reaction has resulted in the formation of salt and water with the reaction of acid and base.

In the neutralization reaction, the strength of the acid and base can be given by:

Molarity of acid \(\times\) Volume of acid = Molarity of base \(\times\) Volume of base

Given, the molarity of KOH base = 0.124 M

The volume of acid (HCl) = 23.4 ml

Molarity of acid (HCl) = 0.206 M.

Substituting the values:

0.206 \(\times\) 23.4 = 0.124 × Volume of base (KOH)

Volume of base (KOH) = 38.874 ml.

Volume of KOH = 38.9 ml

The volume of KOH required for the neutralization of acid has been 38.9 ml. Thus, option B is correct.

For more information about neutralization reaction, refer to the link:

https://brainly.com/question/9691296

i think its volume but im not 100% sure

Answer:

D.

Explanation:

cuz liter is volume

Answer:

a. NH₃ : base

CH₃COOH (acetic acid) : acid

NH₄⁺ : conjugate acid

CH₃COO⁻ : conjugate base

b. HClO₄ (perchloric acid) : acid

NH₃ : base

ClO₄⁻ : conjugate base

NH₄⁺ : conjugate acid

Hope this helps.

Answer:The oxygen is coming from the atmosphere.

Explanation:

Covalent bonds tend to be less polar than ionic bonds, which is an accurate way to compare the two types of bonds.

An atom can participate in covalent and ionic bonds, which are the two main types of bonds. By sharing electrons, two or more atoms can form covalent bonds. When two or more ions come together, their opposing charges hold them together to form ionic bonds.

Response and Justification: The right answer is (a). Covalent bonds are formed when the orbitals of two atoms overlap. Because the sharing of electrons creates covalent bonds.

To know more about Covalent bonds visit :-

https://brainly.com/question/10777799

#SPJ4

Which of the following statements is correct about covalent bonding?

Answer:

1.904 ppm

Explanation:

Concentration of drug in units of ppm = mass of solute / (mass of solution ) × 1000000

mass of blood = density of blood × volume = 1.05 g / ml × 5000 ml = 5250  g

mass of solution = mass of blood + mass of solute ( statin) = 5250 + 0.01 g  = 5250.01 g

Concentration of drug in units of ppm = (0.01 g / 5250.01 g) × 1000000 = 1.904 ppm

I hope this helps!!

Explanation:

here's the answer to your question

Decomposition of Sulfurous Acid (H₂SO₃):

H₂SO₃ → H₂O + SO₂

In this reaction, sulfurous acid decomposes into water (H₂O) and sulfur dioxide (SO₂).

The decomposition of carbonic acid (H₂CO₃) and sulfurous acid (H₂SO₃) can be represented by the following balanced chemical equations:

Decomposition of Carbonic Acid (H₂CO₃):

H₂CO₃ → H₂O + CO₂

In this reaction, carbonic acid decomposes into water (H₂O) and carbon dioxide (CO₂).

Decomposition of Sulfurous Acid (H₂SO₃):

H₂SO₃ → H₂O + SO₂

In this reaction, sulfurous acid decomposes into water (H₂O) and sulfur dioxide (SO₂).

To know more about carbonic acid:

https://brainly.com/question/33000916

#SPJ2

Answer:

Well, considering it's asking about a personal experience you should answer it but ill answer using one of mine.

Explanation:

TW: I AM TALKING ABOUT HUMAN ORGANS AND SEX

During my 7th-grade science class, we were talking/learning about male and female reproductive systems. One day going into class my teacher was standing over a big black bag and something was in it. Everyone was confused but we all sat down, my teacher explained that she has canceled our test. Everyone was happy including me, but she explained that if everyone could say what everything was called and where it was located we would get an A. At that moment she pulled the Black trash bag away and what was under the bag was 2 reproductive organs a Male and a Female one. Most of the girls started gagging and hid under the table (scared it was going to chase them or something) all the guys seemed so amazed. Anyways the weirdest part was when we were touching and saying what is what and what each thing does (with gloves on) one of the dudes thought it would be an amazing idea if he took the penis and put it inside of the uterus. (representing sex)  Everyone was disgusted but my teacher said that in most situations that would be disrespectful but in this case she allowed it, and for the rest of the lesson she talked about how the baby forms and why we should have sex until we are 18.

That is my weird/ best science experience ive ever had.

There are several physical methods that can be used to monitor the rate of a chemical reaction are; Spectrophotometry, Conductometry, and Turbidity measurement

Spectrophotometry involves measuring the changes in the intensity of light absorbed or transmitted by a solution during a chemical reaction. Spectrophotometers are used to measure the amount of light absorbed or transmitted by a sample at different wavelengths.

Conductometry  involves measuring the changes in electrical conductivity of a solution during a chemical reaction. Conductivity meters are used to measure the electrical conductivity of a solution, which can change as the concentration of ions in the solution changes during a chemical reaction.

Turbidity measurement involves measuring the changes in the clarity or turbidity of a solution during a chemical reaction. Turbidimeters or nephelometers can be used to measure the amount of light scattered by a sample, which can change as particles form or dissolve during a reaction.

To know more about Spectrophotometry here

https://brainly.com/question/31440604

#SPJ1

--The given question is incomplete, the complete question is

"What are the physical methods of monitoring the rate of a chemical reaction?"--

Answer:

69.23g

Explanation:

Find out how many moles is in 9.89g of H2.

number of moles = mass(g) / molar mass

1 is the molar mass of hydrogen (to the nearest whole)

relative molecular mass of H2: 2*1 = 2

number of moles of H2 = 9.89/2 = 4.945

1 mol of H2 is produced from 2 mol of Li

so

4.945 mol of H2 produces 9.89 mol of Li

mass(g) = number of moles * molar mass

7 is the molar mass of Lithium (to the nearest whole)

mass = 9.89 * 7 = 69.23

69.23 grams of Li are needed to produce 9.89 of H2

The following molecule that can form hydrogen bonds is acetic acid (A)

Because it is a polar molecule, acetic acid is capable of forming hydrogen bonds with the water molecules in the environment. The hydrogen bonding (H-bonding) that exists between the molecules of acetic acid and water is the most powerful force that is responsible for determining the chemical and physical characteristics of the mixture. In its structure, acetic acid exhibits both a double oxygen-carbon bond as well as a hydrogen atom that is connected to an oxygen atom.

The oxygen atom that is part of the double bond in the acetic acid molecule has the potential to form a hydrogen bond with one of the hydrogen atoms in the water molecule. Two equivalent hydrogen bonds are known to cause acetic acid to form a cyclic dimer. Because of how stable the dimer is, it can even stay in the gas phase.

To learn more about hydrogen bonds, click here:

https://brainly.com/question/28478038

#SPJ4

An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

Learn more about heterogenous equilibrium at: https://brainly.com/question/25257772

#SPJ1

The amount of heat needed to melt 190 of solid octane  1,320,467 J

Generally, When two water molecules bond together, energy is released in the form of a hydrophobic interaction.

This energy is released because the oxygen atom of one molecule is attracted to the hydrogen atoms of the other molecule, forming a strong hydrogen bond between the two molecules.

This attraction releases energy, which can be used to power biochemical reactions.

To calculate the amount of heat needed to melt 190g of solid octane (C8H18) and bring it to a temperature of 99.3°C, I used the following equation:

Q = m x ΔT x Cp.

Using these values, the equation was solved as follows:

Q = 190g x (99.3°C - 0°C) x 1,096 J/g°C.

This gave a result of 1,320,467 J.

Read more about heat

https://brainly.com/question/1429452

#SPJ1

There are approximately \(2.76 * 10^{24\) ammonia molecules in the given sample.

To calculate the number of ammonia molecules in the sample, we need to use Avogadro's number and the molar mass of ammonia.

The molar mass of ammonia \((NH_3)\) can be calculated by adding up the atomic masses of nitrogen (N) and hydrogen (H):

Molar mass of \(NH_3\) = (1 x atomic mass of N) + (3 x atomic mass of H)

              = (1 x 14.01 g/mol) + (3 x 1.01 g/mol)

              = 14.01 g/mol + 3.03 g/mol

              = 17.04 g/mol

Now, we can calculate the number of moles of ammonia in the sample using the formula:

Number of moles = Mass of the sample / Molar mass

Number of moles = 78.25 g / 17.04 g/mol

              ≈ 4.5865 mol (rounded to four decimal places)

Finally, we can use Avogadro's number, which represents the number of particles (atoms, molecules, etc.) in one mole of a substance. Avogadro's number is approximately \(6.022 * 10^{23\) particles/mol.

Number of ammonia molecules = Number of moles x Avogadro's number

Number of ammonia molecules ≈ 4.5865 mol x (\(6.022 * 10^{23\) molecules/mol)

                           ≈ \(2.76 * 10^{24\) molecules (rounded to two significant figures)

Therefore, the provided sample contains roughly \(2.76 * 10^{24\) ammonia molecules.

Learn more about moles on:

https://brainly.com/question/24748125

The number of ammonia molecules in the sample is approximately 2.764 x \(10^{24}\) molecules.

To calculate the number of ammonia molecules in a given sample, we need to use Avogadro's number and the molar mass of ammonia.

The molar mass of ammonia (NH3) is calculated as follows:

Molar mass of N = 14.01 g/mol

Molar mass of H = 1.01 g/mol

Total molar mass of NH3 = 14.01 g/mol + (3 * 1.01 g/mol) = 17.03 g/mol

Now, we can calculate the number of moles of ammonia in the sample:

Number of moles = Mass of sample / Molar mass of NH3

Number of moles = 78.25 g / 17.03 g/mol = 4.594 moles

Next, we use Avogadro's number, which states that there are 6.022 x \(10^{23}\) molecules in one mole of a substance.

Number of molecules = Number of moles * Avogadro's number

Number of molecules = 4.594 moles * 6.022 x \(10^{23}\) molecules/mol = 2.764 x \(10^{24}\) molecules

Therefore, there are approximately 2.764 x \(10^{24}\) ammonia molecules in the given sample of 78.25 g.

Know more about Avogadro's number here:

https://brainly.com/question/1513182

#SPJ8

A gallon is a common volume measurement unit for measuring liquids and occasionally dry things. 5 gallon is equal to 18.925 L.

Thus, The US liquid gallon, US dry gallon, and Imperial gallon are the three different sorts of gallons. To measure and store commodities like fuel, oil, milk, paint, and many other things, these three types are frequently employed.

The English Parliament created the gallon in 1696 to be used for measuring dry goods. After gaining independence, the US adopted the Winchester gallon, which is now known as the US dry gallon.

Both are now referred to as US liquid gallon and US dry gallon, respectively. On the other hand, the Imperial gallon was adopted by the British Empire in 1834.

Thus, A gallon is a common volume measurement unit for measuring liquids and occasionally dry things. 5 gallon is equal to 18.925 L.

Learn more about Liter, refer to the link:

https://brainly.com/question/25546396

#SPJ1

Answer:

Example 1

palladium(II) nitrate,

Example 2

Metal catalysts such as Fe, Ni, Mo, and Co are routinely used in the manufacture of CNMs.

Explanation

The three metals used in catalytic converters — rhodium, platinum and palladium — are part of a category known as platinum group metals, or PGMs, which are known for their catalytic properties.

Answer:

11.3 g/cc

Explanation:

To determine the density of a 4 mL sample of lead, we need to divide its mass by its volume.

The mass of the sample is given as 45.2 g/mL, which means that the sample has a mass of 45.2 grams. The volume of the sample is given as 4 mL, which is equivalent to 4 cubic centimeters (cc).

We can use the formula for density, D = M/V, to calculate the density of the sample. Plugging in the values we have for mass (M) and volume (V), we get: D = 45.2 g / 4 cc = 11.3 g/cc.

Therefore, the density of the 4 mL sample of lead is 11.3 g/cc.

Draw the substituted ring structure in which the chlorine is attached to the ring.

The benzene structure contains only 6 carbons and 6 hydrogens. The ring is replaced where the chlorine is attached to the ring. Therefore, the hydrogen-1 on the benzene ring is replaced by an ethyl group, and another hydrogen on the benzene ring is replaced by a chlorine group. Concerning the chlorine bond, there are 3 possible structures grouped called ortho, meta, and para.

Learn more about  benzene structure here:

https://brainly.com/question/13043486

#SPJ4

The density of the liquid is 0.8125 g/mL.

Density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density. For instance, while Earth has a density of 5.51 grams per cubic centimeter, water has a density of 1 gram per cubic centimeter. Another way to state density is in kilograms per cubic meter (in meter-kilogram-second or SI units). For instance, air weighs 1.2 pounds per cubic meter. In textbooks and manuals, the densities of typical solids, liquids, and gases are stated. The mass of a body can easily be determined from its volume or vice versa using a density.

mass of liquid = (mass of container and liquid) - (mass of empty container)

mass of liquid = 194.37 g - 72.5 g = 121.87 g

The volume of the liquid is equal to the volume of the container, which is 150.0 ml. (1 cm3 = 1 mL)

The density of the liquid is the mass of the liquid divided by the volume of the liquid:

density = mass/volume

density = 121.87 g / 150.0 ml

density = 0.81 g/ml

To know more about density, check out:

https://brainly.com/question/1354972

#SPJ1