HURRY

Give three examples of unbalanced forces in your everyday life.

Answer:

490.83 oK

Explanation:

First of all, we better agree on the meaning of the word adiabatically. It means without the loss or gain of heat. So nothing is given up to or taken from the environment.

This also assumes that no change has occurred in the pressure.

T1 = 310 oK

T2 = ?

V1 = 12 L

V2 = 19 L

T1/V1 = T2/V2

310 / 12 = x/19            Multiply both sides by 19

310*19 / 12 = T2         Multiply 310 * 19 on the left.

5890 / 12   = T2         Divide by 12

490.83 = T2

Answer:

Calcium

Explanation:

It has similar properties as Magnesium (Mg) and Strontium (Sr)

The Atomic number of Calcium (Ca) is 20

The Atomic number of Krypton is 36

The Atomic number of Magnesium is 12

12 < 20 < 36

Answer:

mixture

Explanation:

if u put sand in to a glass of water it is considered to be a mixture.

The rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

To determine the rate of change of the concentration of sodium oxalate (Na₂C₂O4), we can use the rate equation:

Rate = (Δ[Na₂C₂O4]) / (Δt)

where Δ[Na₂C₂O4] represents the change in concentration of Na₂C₂O4 and Δt represents the change in time.

In this case, the initial concentration of Na₂C₂O4 is 1.34 M, and after 19.3 seconds, the concentration is 0.276 M.

Substituting the values into the rate equation, we have:

Rate = (0.276 M - 1.34 M) / (19.3 s - 0 s)

Rate = (-1.064 M) / (19.3 s)

Rate = -0.0551 M/s

Therefore, the rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

The negative sign indicates that the concentration of Na₂C₂O4 is decreasing over time, as the reactant is being consumed in the reaction.

It's important to note that the rate of a reaction is influenced by various factors, such as the reaction mechanism, temperature, and presence of catalysts. The rate can be determined experimentally by measuring the change in concentration of a reactant or product over a specific time interval.

The given information allows us to calculate the rate of change for the specific reaction involving Na₂C₂O4. However, without additional information about the reaction, it is not possible to determine the exact nature or stoichiometry of the reaction, as well as any other reactants or products involved.

For more such questions on rate of change visit:

https://brainly.com/question/29000078

#SPJ8

Answer:

B. What is k in the rate law equation?

Rate = k[A]^m[B]^n its rate constant

Answer: solvent

solvent is  A solvent is usually a liquid

Answer: Solvent

Explanation: Everything that dissolves in water and the things which dissolve are called solutes and the liquid in which they dissolve in is called a solvent to form a solution.

Answer:

0.00625 moles Ba (OH)2

Sig figs: 0.006 mol Ba(OH)2

Explanation:

mol/L = M

x mol/ .125 L = .05 M

x mol = 0.00625

Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electrons.

Answer:

\(\boxed {\boxed {\sf 0.0014 \ mol \ Cu}}\)

Explanation:

We are asked to convert particles to moles.

1 mole of any substance contains the same number of particles (atoms, molecules, formula units). This is Avogadro's Number or 6.022*10²³.

In this problem, the particles are atoms of copper. So, 1 mole of copper contains 6.022*10²³ atoms of copper

Use Avogadro's Number to make a ratio.

\(\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}\)

We are trying to convert 8.3*10²⁰ atoms of copper to moles, so we multiply that value by the ratio.

\(8.3*10^{20} \ atoms \ Cu*\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}\)

The units of "atoms Cu" will cancel.

\(8.3*10^{20}\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} }\)

Condense the expression into 1 fraction.

\(\frac{8.3 *10^{20}}{ 6.022*10^{23} } \ mol \ Cu\)

\(0.001378279641 \ mol \ Cu\)

The original measurement of atoms has 2 significant figures, so our answer must have the same. For the number we calculated that is the ten-thousandths place.

The 7 in the hundredth thousandth place tells us to round the 3 up to a 4.

\(0.0014 \ mol \ Cu\)

8.3*10²⁰ atoms of copper are equal to 0.0014 moles of copper.

In a chemical reaction, the mass, number of atoms, and number of electrons are conserved. So, the following option is right:

5. I, II, and III

In a chemical reaction, the mass of the substance remains the same. Remember the law of conservation of mass which says that the mass of a substance is neither created nor destroyed after a chemical reaction.

Also, the number of electrons that the element contains will not be changed nor will the number of atoms also change. However, the number of molecules can be changed. So, option 5 is the correct point.

Learn more about conservation here:

https://brainly.com/question/27422874

#SPJ1

Answer:

It's probably b

Explanation:

(I'm wrong aren't I)

Answer: 4,3,2

Explanation:

Explanation:

Using a fractional column will help to separate liquids whit different boiling points since the mixture contain ethanol water and propanaol. Ethanol will be the first to be extracted since it has a low boiling point then it would be water and then propanaol.

Answer:

a) 1.392 x 10^6 g/cm^3

b) 8.69 x 10^7 lb/ft^3

Explanation:

mass of the star m =  2.0 x 10^36 kg

radius of the star (assumed to be spherical) r = 7.0 x 10^5 km = 7.0 x 10^8 m

The density of substance ρ = mass/volume

The volume of the star = volume of a sphere = \(\frac{4}{3}\pi r^{3}\)

==> V = \(\frac{4}{3}*3.142*(7.0*10^8)^{3}\) = 1.437 x 10^27 m^3

density of the star ρ = (2.0 x 10^36)/(1.437 x 10^27) = 1.392 x 10^9 kg/m^3

in g/cm^3 = (1.392 x 10^9)/1000 = 1.392 x 10^6 g/cm^3

in lb/ft^3 =  (1.392 x 10^9)/16.018 = 8.69 x 10^7 lb/ft^3

Answer:

39.6 g

Explanation:

The equation of the reaction is;

2Mg(s) + O2(g) --------> 2MgO(s)

To obtain the limiting reactant;

Number of moles in 26.4 g of Mg = 26.4g/24 g/mol = 1.1 moles

If 2 moles of Mg yields 2 moles of MgO

1.1 moles of Mg yields 1.1 * 2/2 = 1.1 moles of MgO

Number of moles in 26.4 g of O2 = 26.4 g/32g/mol = 0.825 moles

If 1 mole of O2 yields 2 moles of MgO

0.825 moles of O2 yields 0.825 moles * 2/1 = 1.65 moles of MgO

Hence Mg is the limiting reactant.

Theoretical yield of MgO = 1.1 moles of MgO * 40 g/mol = 44 g

Percent yield = 90%

Percent yield = actual yield/theoretical yield * 100

Actual yield = Percent yield * theoretical yield/100

Actual yield = 90 * 44/100

Actual yield = 39.6 g

Answer:

The answer is the layer of the sun that radiates energy outwards from the sun core

Explanation:

the reason why that is becuase the convection zone is a layers which is unstable to convection. And energy is primarily or partially transported by convection

Answer:

D

Explanation:

Confrontation, compromise, and withdrawal are all forms of conflict management. In conflict management, confrontation means facing up to or standing up to someone, while withdrawal means retreating from a relationship or situation when there is no possibility of conflict resolution.

Similarly, compromise is a way of resolving a conflict or disagreement by giving up something or meeting someone halfway. When a conflict arises, people use different strategies to manage it. Conflict management strategies can be classified into two broad categories; constructive conflict management and destructive conflict management. Constructive conflict management strategies are strategies used to resolve conflicts peacefully without any harm to either party. Such strategies include confrontation, compromise, problem-solving, negotiation, and collaboration. Conversely, destructive conflict management strategies are those that are aimed at causing harm, such as physical violence, emotional abuse, or verbal attacks.

To know more about conflict management visit :

brainly.com/question/1887414

#SPJ11

1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

For more such questions on concentration visit:

https://brainly.com/question/28564792

#SPJ8

The energy a mosquito obtains when biting a human is derived from the nutrients present in the blood, which serve as a source of sustenance and facilitate the reproductive cycle of female mosquitoes.

When a mosquito bites a human, it does not directly obtain energy in the form of electricity or any other conventional type of energy. Instead, the mosquito gains sustenance through its feeding behavior. Mosquitoes are hematophagous insects, meaning they feed on the blood of other animals, including humans.

The energy obtained by a mosquito from biting a human comes from the nutrients present in the blood. Mosquitoes have evolved specialized mouthparts that enable them to pierce the skin and access blood vessels. Once they penetrate the skin, they release saliva containing enzymes that prevent blood clotting, allowing them to extract the necessary nutrients.

The primary source of energy for mosquitoes is the sugar found in nectar, which provides them with the fuel required for flight and basic metabolic processes. However, female mosquitoes require additional nutrients, such as proteins and iron, which are crucial for egg development. By biting a human and consuming blood, female mosquitoes acquire these essential nutrients, which contribute to their reproductive capabilities.

For such more questions on nutrients

https://brainly.com/question/13208550

#SPJ8

(i) The initial-boundary value problem for the given scenarios are as follows:

a) Scenario a:

PDE: ∂u/∂t = k * ∂²u/∂x²

Initial condition: u(x, 0) = 100 (boiling water temperature)

Boundary conditions: u(0, t) = 10, u(L, t) = 10 (constant temperature at the ends)

b) Scenario b:

PDE: ∂u/∂t = k * ∂²u/∂x²

Initial condition: u(x, 0) = 100 (boiling water temperature)

Boundary conditions: u(0, t) = 0 (temperature at x=0), ∂u/∂x(L, t) = 0 (thermal insulation at x=L)

(iii) The solution for the temperature distribution as time approaches infinity can be found by solving the appropriate steady state equation.

(i) The initial-boundary value problem formulation states the partial differential equation (PDE) governing the temperature distribution in the aluminum bar, along with the initial condition and boundary conditions.

In scenario (a), both ends of the bar are immersed in a medium with a constant temperature of 10 degrees Celsius, while in scenario (b), the end at x=0 is immersed in a medium with temperature 0 degrees Celsius and the end at x=L is insulated.

(ii) As time approaches infinity, the temperature distribution in the bar tends to reach a steady state.

In scenario (a), the temperature throughout the bar will eventually approach a constant value of 10 degrees Celsius, since both ends are immersed in a medium with that temperature.

In scenario (b), the temperature at x=0 will approach 0 degrees Celsius, while the temperature at x=L will remain constant due to thermal insulation.

(iii) To find the solution as time approaches infinity, we need to solve the appropriate steady state equation.

In scenario (a), the steady state equation is ∂²u/∂x² = 0, which implies that the temperature gradient is zero throughout the bar, resulting in a constant temperature of 10 degrees Celsius.

In scenario (b), the steady state equation is ∂²u/∂x² = 0 with the boundary condition u(0) = 0, which implies a linear temperature distribution from 0 degrees Celsius at x=0 to a constant temperature at x=L due to insulation.

Learn more about initial-boundary value

brainly.com/question/32732526

#SPJ11

According to the concept of Avogadro's number and STP conditions volume in liters of the sample is 15,388.7.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

Number of moles is obtained as, number of atoms/Avogadro's number=4.088×10²⁴/6.023×10²³=6.78 moles on substitution in formula of PV=nRT=V=6.78×8.314×273/1=15,388.7 liters.

Thus, the volume is 15,388.7 liters of the sample.

Learn more about Avogadro's number,here:

https://brainly.com/question/11907018

#SPJ1

Answer:

Option B and A

Explanation:

Answer:

3.01 * 10 ^ 23 atoms of Pt

Explanation:

1 mole of Pt contains 6.02 * 10 ^ 23 atoms of Pt

195.084 g of Pt has  6.02 * 10 ^ 23 atoms of Pt  

97.6 g = .5 moles so  

97.6 g of Pt has 3.01 * 10 ^ 23 atoms of Pt

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

Given:

The mass of platinum = 97.6 grams

To find:

The number of platinum atoms in 97.6 grams.

Solution:

Mass of platinum = 97.6 g

Moles of platinum =\(\frac{97.6g}{195.084 g/mol}=0.500 mol\)

According to the mole concept:

1 mole = Avogadro Number = \(N_A=\) \(6.022\times 10^{23} atoms/ molecules/ions\)

The number of platinum atoms in 0.500 moles of platinum:

\(=0.500\times 6.022\times 10^{23} atoms\\\\=3.011\times 10^{23} atoms\)

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

Learn more about the mole concept here:

/brainly.com/question/7287712?referrer=searchResults

Answer:

radio waves

Explanation:

24074 (Rh) atoms would have to be placed side by side to span a distance of 6.0.

The smallest piece of matter that exists in the universe is an atom. Atoms that are neutral or ionized make up every material in our environment. The atoms are tiny, spherical objects, and the Armstrong unit is used to measure their diameter.

1A = (10^-10)

The diameter of a rhodium atom (Rh) is approximately d = 2.7 x 10^-10

so,

It is assumed that if we keep n atoms next to one another, we will create a distance of L = 6.5μm  = 6.5 x 10^-6

In this case,

We can see that if we keep the atoms side by side, the total length of them will be determined by adding the total diameters.

we have:

L = n d

n = L/d

Putting values :

n = (6.5 x 10^-6)/( 2.7 x 10^-10)

n = 24074

24074 (Rh) atoms would have to be placed side by side to span a distance of 6.0

To know more about Atom visit:

https://brainly.com/question/1566330

#SPJ4

Answer: Hydrogen-H

Explanation: Hydrogen is a gas, the most abundant element in the universe and the simplest of them all

Yes, household vinegar is typically 5% acetic acid.

This concentration is commonly referred to as "5% vinegar" or "distilled white vinegar." It is widely available and used for various household and cooking purposes, such as cleaning, pickling, and condiments. It is important to note that other types of vinegar, such as apple cider vinegar, balsamic vinegar, and wine vinegar, may have different acetic acid concentrations, so it is important to choose the right type of vinegar for the intended use. Additionally, the 5% acetic acid concentration can vary slightly depending on the manufacturer, so it is a good idea to check the label or product specifications to ensure that you have the correct concentration for your needs.

Learn more about vinegar:

brainly.com/question/4239583

#SPJ4

pH of the solution is approximately 2 and pOH of the solution is 0. H₂SO₄ is a strong acid that ionizes completely in water. Its dissociation equation is:

H₂SO₄ → 2H⁺ + SO4²⁻

Since H₂SO₄ dissociates to produce two hydrogen ions (H⁺), the concentration of H⁺ in the solution will be double the initial concentration of H₂SO₄.

Given,

The initial concentration of H₂SO₄ = 0.005 M

The concentration of H⁺ ions will be 2 × 0.005 M = 0.01 M.

pH = -log[H⁺]

pH = -log(0.01) ≈ 2

pOH = -log[OH⁻]

Since H₂SO₄ is a strong acid, it does not produce hydroxide ions (OH⁻) upon dissociation. Therefore, the concentration of OH⁻ in the solution is negligible, and the pOH is essentially 0.

Learn more about pH, here:

https://brainly.com/question/2288405

#SPJ1

Answer:Zirconium is a chemical element with the symbol Zr and atomic number 40. The name zirconium is taken from the name of the mineral zircon, the most important source of zirconium. It is a lustrous, grey-white, strong transition metal that closely resembles hafnium and, to a lesser extent, titanium. Zirconium is mainly used as a refractory and opacifier, altho…