how many feet are in 271 miles?
1mi=5280ft
SHOW YOUR WORK
due today help please

The change in standard reaction entropy of two reactions can be estimated when the temperature is increased by 20 K at constant pressure.

By using the equation ΔS = ΔH / T and the given temperature increase of 20 K, we can estimate the change in standard reaction entropy for the two reactions.

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Answer: Replacement means a person or thing that takes the place of another; a substitute.

The Minimum Thickness is 156.25 nm.

What do you mean by refraction?

The change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves travel faster in deep water than in shallow. If an ocean wave approaches a beach obliquely, the part of the wave farther from the beach will move faster than the part closer in, and so the wave will swing around until it moves in a direction perpendicular to the shoreline. The speed of sound waves is greater in warm air than in cold. At night, air is cooled at the surface of a lake, and any sound that travels upward is refracted down by the higher layers of air that still remain warm. Thus, sounds, such as voices and music, can be heard much farther across water at night than in the daytime.

Minimum Thickness, t = lambda/4n

t = 750/(4* 1.2) = 156.25 nm

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Answer:

D. Moving north at 40 km/hr

Explanation:

velocity is just speed of something in a given direction

Cells communicate via chemical signals which bind to specialized molecules on the plasma membrane surface. These molecules are called receptor proteins.

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As an example of how CO2 is utilized in industry, it is employed as an inert gas in welders and flame extinguishers, as just a pressurizing gas for air cannons and oil recovery, as a supercritical solvent in coffee decaffeination and supercritical drying.

Chemical intermediaries, such as methanol, syngas, & formic acid, can be produced from CO2 using a variety of catalysts. These molecules subsequently act as feedstocks in those other industrial processes.Additionally, CO2 can be converted by catalysts to polymers, which serve as building blocks for plastics, adhesives, & medications.

The creation of ethanol, fertilizer, natural gas processing, hydrogen synthesis in refineries, and, most recently, coal-fired power generation are among the industrial processes where large-scale carbon capture has been shown and is currently in use.

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A medal in a 1.5 index of refraction plastic cube seems to be 20 mm below the cube's upper surface. The medal is actually 30mm deep inside the acrylic cube

It looks that a medal in a plastic cube is 20 mm below its upper surface.

Equation

Appearance depth is 20mm

Let's say the real depth of the medal in the plastic cube is h.

We know that

real depth/apparent depth =the plastic's refractive index in relation to the air.

H/20 mm

= 1.5 H

= 20 mm x 1.5 mm

= 30.0 mm

Thus, the medal's real depth inside the plastic cube is 30 mm.

Refraction: What Is It?

Refraction is the bending of a wave as it travels through different media. The two materials' different densities are what lead to the bending.

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Answer:

See the answer below

Explanation:

In chemistry, indicators are substances that are capable of changing colors with respect to the pH. Each indicator has its characteristic color in acidic pH and another characteristic color in alkaline pH.

Methyl orange indicator appears red in acidic solution and yellow in basic solutions. Phenolphthalein is usually colorless in acidic solutions and appears pink in basic solutions. A red litmus paper will turn blue in alkaline solutions while a blue litmus paper will turn red in acidic solutions.

Answer:

Lyman series of hydrogen atom lies in the ultraviolet region, Balmer series lies in visible region, Paschen series lies in near infrared region whereas Bracket, Pfund as well as Humphrey series lie in far infrared region of electromagnetic spectrum.

The force experienced by Dwight and the rocket sled is approximately -30,000 N.

The force can be calculated using the formula :

F = ma

where F is the force,

m is the mass

and a is the acceleration.

Acceleration can be calculated using the formula :

a = v/t

a = (final speed - initial speed) / time
a = (0 m/s - 100 m/s) / 1.5 s
a = (-100 m/s) / 1.5 s
a = -66.67 m/s² (negative sign indicates deceleration)

Calculate the force:
F = ma
F = (450 kg) × (-66.67 m/s²)
F = -30,000 N (approximately)

Thus, the force experienced is -30,000 N. The negative sign indicates the force acts in the opposite direction of the initial motion, as it brings the sled and Dwight to a stop.

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The kinetic energy of gas particles will be greater when the temperature is 32°C than when the temperature is at 25°C.

What is Kinetic Energy?

Here, it is given that the temperature is increasing from 25°C to 32°C.

We know that when the temperature increases, the average kinetic energy also increases.

Thus, the kinetic energy of gas particles will be greater when the temperature is 32°C than when the temperature is at 25°C.

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Answer:

0.0199moles

Explanation:

The number of miles of a substance can be calculated using the formula:

Number of moles (n) = Mass (M) / Molar mass (MM)

In this question, the mass of Magnesium element (Mg) = 0.478 g while the atomic mass is 24

Therefore, number of moles of Magnesium is:

Moles = 0.478/24

Moles = 0.01992

Hence, 0.0199 moles of Magnesium are contained in 0.478 g of the element.

Answer:

Percent error in meter stick measurement is 5.5%.

Explanation:

Given data:

Measured value = 25 cm

Accepted value = 23.7 cm

percent error = ?

Solution:

Subtract the accepted value from measured value divided by accepted value multiply by 100.

Formula:

(measured value - accepted value / accepted value ) × 100

Now we will put the values.

(25 cm - 23.7 cm/23.7 cm ) × 100

1.3 cm/23.7 cm ) × 100

0.055× 100

5.5%

Percent error in meter stick measurement is 5.5%.

Answer:together doesn't make water

Explanation:

together doesn't make water

Answer:

c

Explanation:

Answer:

S2H8

Explanation:

Although it might not occur possibly, we can write the formula for disulphur octahydride

We have two elements here, sulphur and hydrogen

The multiplicity of the sulphur is di while that of the hydrogen is octa

So the formula we are looking at here is S2H8

Answer:

100/6% =16.67%

Explanation:

16.67%

A physical change will occur when boiling water, tea, sugar, and ice are combined to form sweet iced tea.

A physical change is a change affecting the form of a chemical substance, but not its chemical composition.

The characteristics of some physical changes are as follows:

According to this question, one makes a glass of refreshing sweet iced tea by combining boiling water, tea, sugar, and ice on a hot summer day. The resulting solution is an example of a mixture, which contains constituents that retain their individual identity.

This suggests that the change is a physical change because there is no formation of a new substance.

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A metal surface is covered by another metal during additive plating. The accused had to coat the necessary coinage metal on another metal known as the base metal to create the coins.

Additive plating is a plating reaction in which an electron donor in solution reduces metal cations. An object's surface is covered in decreased cations. EITHER Displacement Plating Metals on an object's surface reduce metal cations in a reaction known as plating.

Electroplating is essentially the hydrolysis-based plating of one metal onto another, either to stop corrosion of the metal or for aesthetic reasons. To create a slim coherent metal coating on the electrode, the technique reduces dissolved metal cations using an electric current.

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Answer:

2

Explanation:i did the test

The amount of chemical product, y, at a distance of x = 1 is given by y = -ln(-(1/2) ln|3| + C3), where C3 is a constant.

The given differential equation is dx/dy = e^(-y)(2x+1), where y represents the amount of chemical product and x represents the length across the reactor.

i. To find the particular solution for y, we need to solve the given differential equation. Let's separate the variables and integrate both sides with respect to x and y.

dx/(2x+1) = e^(-y) dy

Integrating both sides, we get:

∫ dx/(2x+1) = ∫ e^(-y) dy

To integrate the left side, we can use the substitution u = 2x+1. This gives us du = 2dx, which implies dx = du/2.

∫ dx/(2x+1) = ∫ (1/u) (du/2)

= (1/2) ∫ du/u

= (1/2) ln|u| + C1, where C1 is the constant of integration.

= (1/2) ln|2x+1| + C1

Integrating the right side:

∫ e^(-y) dy = -e^(-y) + C2, where C2 is the constant of integration.

Now, equating both sides and simplifying:

(1/2) ln|2x+1| + C1 = -e^(-y) + C2

Rearranging the terms:

e^(-y) = -(1/2) ln|2x+1| + C3, where C3 = C2 - C1.

Taking the natural logarithm of both sides:

-y = ln(-(1/2) ln|2x+1| + C3)

y = -ln(-(1/2) ln|2x+1| + C3), where C3 is a constant.

ii. To find the amount of chemical product, y, at a distance of x = 1, we substitute x = 1 into the particular solution obtained in part i.

y = -ln(-(1/2) ln|2(1)+1| + C3)

Simplifying further:

y = -ln(-(1/2) ln|3| + C3)

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The correct answer is c. Both a and b. If water is not allowed to drip off the metal before it is placed in the calorimeter, the excess water will increase the mass of the metal, leading to an incorrect calculation of its specific heat capacity.

Additionally, the water clinging to the metal will have a different temperature than the metal itself, causing the initial temperature of the calorimeter water to be incorrect, which will further affect the calculation of the specific heat capacity of the metal. Therefore, it is important to ensure that the water is removed from the metal before it is placed in the calorimeter to obtain accurate results.

A calorimeter is a device used to measure the heat flow in a chemical or physical process. Calorimeters are used to determine the heat of reaction (ΔH) or the specific heat capacity of a substance (c). The most common type of calorimeter is the coffee cup calorimeter, which is a simple device consisting of a styrofoam cup with a lid and a thermometer inserted through the lid.

To use a calorimeter, the reactants are mixed inside the cup, and the heat released or absorbed by the reaction is measured by monitoring the change in temperature of the contents of the cup over time. By knowing the heat capacity of the calorimeter and the temperature change, the heat of reaction or specific heat capacity can be calculated using the equation:

q = CΔT

where q is the heat flow, C is the heat capacity of the calorimeter, and ΔT is the change in temperature.

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Answer:

Temp decreased

Explanation:

If the container is sealed and the pressure DEcreases, then the temperature DEcreased

PV = n RT     n  R   V   are constant   if  P goes down then so does T    

Answer:

118MOLS

Explanation:

M1VI=M2V2

THE REST WORK OUT ( BA UNZA STUDENTS HE HE HE )

Answer:

612813415 I my UID and I'm on the NA server. My name is Lee.

Explanation:

I'm AR55 so I can help you with bosses or anything else you need! :)