Chemistry High School

In the diagram shown, what is occurring at the section marked 4 ?
Temperature
:: ا
4
2
Heat Energy
O Melting
Freezing
O Condensation
O Vaporization

In The Diagram Shown, What Is Occurring At The Section Marked 4 ?Temperature:: 42Heat EnergyO MeltingFreezingO

Answers

Answer 1

Answer:

Vaporization

Since the question does not specify what molecule is being acted upon by the increment in temperature, I'll assume it's water.

When first taken out of the fridge, water is in the form of ice, and it has not been affected by a change in temperature yet, so it's at the origin.

(origin = ice)

As you raise the temperature, however, the ice starts to melt, and melting occur during phase 2. You have to keep the temperature constant for the process to properly occur.

(phase 2 = melting)

After it finishes melting, the ice is now in it's liquid state, which is water. The temperature continues to rise in order to proceed to the next phase.

(2nd slope = water)

Lastly, Water is being vaporized during phase 4. Notice, the temperature is kept constant in order to allow the process to properly occur.

(phase 4 = vaporization)

Related Questions

Which of these is true about a pH meter?
It is inexpensive to use.
It measures pH indirectly.
It does not require calibration.
It can be used in any acid-base titration.

Answers

Answer:

That is, a pH meter is useful in detecting or knowing the acidity (due to ions) or alkalinity (due to ions) of a solution. Thus, we can conclude that out of the given options it is true about a pH meter that it can be used in any acid-base titration

Answer: D. It can be used in any acid-base titration.

Explanation:

show using dots to illustrate high population density and low population density in the boxes provided in answer to guide questions ​

Answers

Answer:

Just add a plenty of dots in the first one and very few dots in the second one

An area with high population density will have many dots while areas will low population density will have few dots when using dots to illustrate population density.

What is population density?

Population density is the ratio of the total number of organisms found in a given area to the total of the area of that place or habitat.

Population density = total number of organisms/total area

An area with high population density indicates that more organised ate found per unit area than an area with low population density.

Therefore, using dots to illustrate population density, an area with high population density will have plenty dots while areas will low population density will have few dots scattered over.

Learn more about population density at: https://brainly.com/question/13902749

What is the delta H when 72.0 grams H2O condenses at 100.00C?

Here are some constants that you MAY need.

specific heats heat of fusion heat of vaporization

H2O(s) = 2.1 J/g0C 6.01 kJ/mole 40.7 kJ/mole

H2O(L) = 4.18 J/g0C

H2O(g) = 1.7 J/g0C



2930 kJ


163 kJ


-163 kJ


-2930 kJ

Answers

Answer: The value of [tex]\Delta H[/tex] is -163 kJZ

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

We are given:

Given mass of water = 72.0 g

Molar mass of water = 18 g/mol

Putting values in equation 1, we get:

[tex]\text{Moles of water}=\frac{72.0g}{18g/mol}\\\\\text{Moles of water}=4mol[/tex]

Calculating the heat released for the condensation process:

[tex]\Delta H=n\times \Delta H_{(vap)}[/tex] ......(2)

where,

[tex]\Delta H[/tex] = amount of heat released

n = number of moles of water = 4 moles

[tex]\Delta H_{(vap)}[/tex] = specific heat of vaporization = -40.7 kJ/mol

Negative sign represents the amount of heat released.

Putting values in equation 2:

[tex]\Delta H=4mol\times (-40.7kJ/mol)=-163kJ[/tex]

Hence, the value of [tex]\Delta H[/tex] is -163 kJ

Use mathematics to prove that the 5.50 grams of salicylic acid (C7H6O3) used in this experiment is equal to 0.04 mol.

Answers

Answer:

Please find the answer to the question below

Explanation:

In chemistry, the following mathematical formula is used to calculate the number of moles contained by a substance:

mole = mass of substance (g)/molar mass of substance (g/mol)

Molar mass of salicylic acid (C7H6O3) = 12(7) + 1(6) + 16(3)

= 84 + 6 + 48

= 138g/mol

Mass = 5.50grams

mole = 5.5/138

mole = 0.039

Approximately, the number of moles of 5.5grams of salicylic acid is 0.04moles. This is in accordance with the mole value (0.04) given in this question.

Por qué razón se fomenta la inmigración Europea?​

Answers

Hola aquí va la respuesta!

Se fomentó la inmigración europea porque la economía no era buena y vinieron a Paraguay para mejorar su situación.

Hola aquí va la respuesta!

Se fomentó la inmigración europea porque la economía no era buena y vinieron a Paraguay para mejorar su situación.

Other Questions
SN1 reactions usually proceed with ________. A) equal amounts of inversion and retention at the center undergoing substitution B) slightly more inversion than retention at the center undergoing substitution C) slightly more retention then inversion at the center undergoing substitution D) complete inversion at the center undergoing substitution E) complete retention at the center undergoing substitution complete retention at the center undergoing substitution slightly more retention then inversion at the center undergoing substitution complete inversion at the center undergoing substitution equal amounts of inversion and retention at the center undergoing substitution slightly more inversion than retention at the center undergoing substitution 6x-27=-3xsolve for x:D Why does glucose and acentic acid have the same empirical formula Which of the following was most affected by the Great Migration? Three months of rent were prepaid on May 1 for $7,200, but two months have now expired, leaving only one month prepaid at June 30. What is the amount of rent expense that will be recorded in the related adjusting entry dated June 30?a- $0b- $2,400c- $4,800d- $7,200 Help ASAPWhile folks flocking to the cities told new tales, it was thesame old story out in the rural parts of the state. Therethe roaring" sounded more like a barn mouse than aBuick. Where dairy farmers near Hickory were doingwell, five out of every six farmers in Scotland Countywere still sharecroppers. Across the state, 137,000country families did not own the land they labored oneach summer. Hardly any owned a car. Quite a few hadproblems feeding their mules, let alone their children.For some North Carolinians during the 1920s, their besteffort went wanting. A pest killed the strawberry plantsnear Wilmington. The boll weevil greatly damaged thecotton crop in the 1920s until farmers learned to poisonit. Some farmers in the Sandhills tried very hard after thewar to grow peaches, but folks in Georgia grew thembetter and took most of the money. Prices of farmproducts went steadily down throughout the decade.What was the main difference between rural and urbanareas in North Carolina in the 1920s?O People in rural areas faced more financialdifficulties than people in urban areas.O Business was booming for farmers in rural areas,while urban workers struggled.* More car owners lived in rural areas than in urbanareas because cars were a necessityChanging technology was widely accessible in bothurban and rural areas, but it was used in differentways 1. Mineral in the earth's crust exists naturally in form of solid elements or compounds* True False The diameter of a circle is 6 inches. What is the circle's circumference? Use 3.14 for . Imagine carefully weighing a metal can, leaving it out in the rain for weeks and weeks until it was very rusted, and then carefully weighing it again. Would the can be heavier or lighter after it was rusted? Find the area of the shape below. GUS PLEASE HEL Revenue of a segment includes A. only sales to unaffiliated customers B. Sales to unaffiliated customers and intersegment sales c. Sales to unaffiliated customers and interest revenue d. Sales to unaffiliated customers and other revenue and gains Which of the following is the function f(x) if f^-1(x) = 5x - 19?A. f(x) = x - 19 over 5 B. f(x) = x + 19 over 5 C. f(x) = 5x + 19 D. f(x) = x over 5 + 19 What was the USSR in control of after WW2? Name 3 characteristics of R&B Length of radius r ? Dan, Harry and Regan sell cars.Dan sells x cars.Harry sells 5 more cars than Dan.Regan sells twice as many cars as Dan.Write an expression, in terms of x, for the mean number of cars Dan, Harry and Regan sell. Solve 2x + 6 > 20. OLA X> 18 B. X>7 O c. xsomeone help por favor find the height x of the tree Carol Co. prepares a statement of cash flows starting with net income and then adjusting for items necessary to obtain net cash provided or used by operating activities. Carol Co. must be using the______method of reporting the statement of cash flows. Naturally occurring gallium is a mixture of isotopesthat contains 90.11% of Ga-69 (atomic mass = 68.93u) and 9.89% of Ga-71 (atomic mass 70.92 u).What is the average atomic mass of naturallyoccurring gallium?A) 69.93 amuC) 69.50 amuB) 69.12 amuD) 69.00 amu