Chemistry College

[EASY][50pt] Temperature vs Time Graph
5. In what state of matter does this substance exist at the 22 minute mark?

6.At what temperature does condensation occur?

7.What phase change occurs at 70C

[EASY][50pt] Temperature Vs Time Graph5. In What State Of Matter Does This Substance Exist At The 22

Answers

Answer 1

#5

At 22min the temperature is at 40°C

So the matter is at solid state.

#6

Graph ended at 20°C so condetion occured at 20°C

#7

After 70°C the matter got melted do its at liquid state

Related Questions

What is a small description of a molecule

Answers

Answer:

molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

When the electron from the n=4 excited state drops to the ground state, does it absorb energy or emit energy?

Answers

Answer:

It emits energy since to move from a higher energy level to a lower energy level or ground state, it must lose energy.

Consider the reaction.

2Pb(s)+O2(g)⟶2PbO(s)

An excess of oxygen reacts with 451.4 g of lead, forming 386.5 g of lead(II) oxide. Calculate the percent yield of the reaction.

Answers

Answer:837.9

Explanation:add those 2 numbers

Is halogen radioactive

Answers

Answer: yes

Explanation:

Why is volume measured with different units?

Answers

Answer:

The volume of an object can be calculated by multiplying its length, width and height. Further, depending on the shape of the object, its volume changes.

Explanation:

Hope this helps

Sodium (Na) and chlorine (CI) combine to form a __ of salt (NaCI)
A. Mixture
B. Molecule

Answers

Answer:A mixture

Have a nice day :D

the answer is A (I accidentally replied to someone’s comment lol)

3. Ethanol has a density of 0.800 g/mL.
a. What is the mass of 225 mL of ethanol?

Answers

Since the ethanol has a density of 0.800 g/mL, the mass of the ethanol is 180 grams.

Given the following data:

Volume of ethanol = 225 mLDensity of lead ball = 0.800 g/mL.

To find the mass of the ethanol;

Density can be defined as mass all over the volume of an object.

Mathematically, the density of a substance is given by the formula;

[tex]Density = \frac{Mass}{Volume}[/tex]

Making mass the subject of formula, we have;

[tex]Mass = Density \times Volume[/tex]

Substituting the given parameters into the formula, we have;

Mass of ethanol = 180 grams.

Read more: https://brainly.com/question/18320053

helpppppppppppppppppppppppppppppppppp

Answers

Answer:

the drops of liquid are coming from the decreases. they are formed as the motion of the water particles in the air gas. this change in motion cause air in the air to change from a liquid to a water

Hello there!

The drops of liquid are coming from the air. They are formed as the motion of particles in the air decreases. This change in motion causes water in the air to change from a liquid to a gas.

Hope this helps you!

~Just a joyful teen

[tex]SilentNature :)[/tex]

✿❀❁❀✿

Determine the total mass of 5 moles of CuSO4.5H2O

Answers

Answer:

Answer: 1247.5 grams

Explanation:

explanation on image .

All of the following affect toxicity of a substance except*

origin of the substance
nature of exposure
duration
dosage

Answers

Answer:

durage

Explanation:

durage just doesn't make sense compared to the other 3

Answer:

Origin of the substance

Explanation:

Origin of a substance doesnt affect toxicity but all other options do

A compound's properties are different than the properties of the elements that make it up.

A)True
B)False

Answers

The answer is True because elements in a compound combine and become an entirely different substance with its own unique properties.

draw the lewis dot structure of C4H8N2O3

Answers

Explanation:

Refer to the attachment

Extrashots:-

C4H8N2O3 is called asparagine .

A student uses a solution of potassium hydroxide to titrate a solution of nitric acid. Which question is the student trying to answer?(1 point)
What is the concentration of nitric acid?
What is the concentration of nitric acid?

How much nitric acid solution is present?
How much nitric acid solution is present?

What is the concentration of potassium hydroxide?
What is the concentration of potassium hydroxide?

How many moles of potassium hydroxide are present?
How many moles of potassium hydroxide are present?

Answers

Answer:

A. What is the concentration of nitric acid?

Explanation:

its right

Answer:

A

Explanation:

Which layer is thin, brittle, solid, and composed primarily of silica?

the crust

the mantle

the outer core

the inner core

Answers

The crust.

You can immediately cross out the inner and outer core. And the mantle is the layer between the crust and the cores.

5 examples of Earth Surface .
​

Answers

Answer:

lithosphere (land)

hydrosphere (water)

biosphere (living things)

atmosphere (air).

what is the bonding of hydrogen?

Answers

Answer:

A hydrogen bond is a primarily electrostatic force of attraction between a hydrogen atom which is covalently bound to a more electronegative atom or group, and another electronegative atom bearing a lone pair of electrons..

(refer the image)

Explanation:

brainliest plz

Marcos thought that energy drinks would increase students' productivty. Before he set his
hypothesis, he read newspaper and magazine articles on the effects of energy drinks, he
also conducted a few searches on the internet. What part of the scientific method did
Marcos just complete?

Answers

Answer:

Researching maybe? That's a scientific method lol

Research because he has found out important information about the experiment before he conducted it to give a correct hypothesis

helppppppppppppppppppppppppppp

Answers

the answer is true
correct me if i’m wrong :)

Answer:

It's also true

Explanation:

the answer is written in this question

I hope that helps

which is more likely HON or HNO

Answers

NO- (isoelectronic or same as O2) is hard base

H+ is hard acid

bonding depends which pi* has more electron density and calc shows more on N...hence HNO is more likely (bent) molecule

whatever....

where does fertilization occurs in human beings​

Answers

In human beings fertilization occurs in fallopian tube

Answer:

Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.


Can someone please help me answer this

Answers

Answer:

yiur mom

Explanation:

d

What is the controlled variable of your experiment?
Your answer

Answers

Answer:

The controlled variable of an experiment is the one thing that stays the same in an experiment.

Explanation:

An example would be : if I have two pennies, both dunked in water, but than I change one to be dunked in vinegar, the one dunked in water still is the constant or the controlled variable.

Based on their composition and structure, list CH3COCH3
C
H
3
C
O
C
H
3
, CH3CH(CH3)CH3
C
H
3
C
H
(
C
H
3
)
C
H
3
, and CH3COOH
C
H
3
C
O
O
H
in order of decreasing intermolecular forces.

Answers

Answer:

in order of decreasing intermolecular forces.

CH3COOH      acetic acid

CH3COCH3     acetone or IUPAC propanone

, CH3CH(CH3)CH3 isobutane or IUPAC 2 methyl propane

Explanation:

Based on their composition and structure, list

CH3COCH3

this ketone has the middle intermolecular forces

, CH3CH(CH3)CH3  

this hydrocarbon has the lowest intermolecular forces

, and  CH3COOH

this carboxylic acid has the greatest intermolecular forces

in order of decreasing intermolecular forces.

CH3COOH      acetic acid

CH3COCH3     acetone or IUPAC propanone

, CH3CH(CH3)CH3 isobutane or IUPAC 2 methyl propane

Part D
Based on the activity series you created in part C, predict whether there would be a chemical reaction or no
reaction when the listed pairs of substances are combined.

Answers

Answer:

magnesium and copper(II) sulfate  no reaction

iron and magnesium sulfate                  reaction

copper and iron(III) nitrate                  reaction

magnesium and hydrochloric acid  reaction

Explanation:

how many atoms of vanadium are in 1.28 grams of vanadium

Answers

The number of atoms in 1.28 grams of vanadium is 1.51×10²² atoms

Avogadro's hypothesis

From Avogadro's hypothesis,

1 mole of Vanadium = 6.02×10²³ atoms

But

1 mole of Vanadium = 51 g

Thus,

51 g of Vanadium = 6.02×10²³ atoms

How to determine the atoms in 1.28 g of Vanadium

51 g of Vanadium = 6.02×10²³ atoms

Therefore,

1.28 g of Vanadium = (1.28 × 6.02×10²³) / 51

1.28 g of Vanadium = 1.51×10²² atoms

Thus, 1.51×10²² atoms is present in 1.28 g of Vanadium

Learn more about Avogadro's number:

https://brainly.com/question/26141731

How many hydrogen atom are in compound NH42CO3

Answers

Answer:

There are 4 Hydrogen atoms in the compound NH42CO3

Explanation:

The "H4" is used to represent the amount of Hydrogen atoms in the compound itself, which is 4.

A boy rides his bike to his friends house. He travels 2 miles in 8 minutes. What is the boy's average speed? Write the formula, plug in the numbers, and write the answer.

Answers

Explanation:

y = 4×

explnation

8÷2 =4

1 mile equals 4 minutes

A boy rides his bike to his friend's house. He travels 2 miles in 8 minutes, the boy's average speed will be 0.25 meters per second (m/s).

What is speed?

Speed of any object is the rate of change of position in the given time of interval or given time of the unit is said to be speed an can be measured by dividing the distance traveled with the time.

A boy rides his bike to his friend's house. He travels 2 miles in 8 minutes so the speed will be,

            Speed = distance / time

             Speed = 2 miles / 8 minutes

              Sped = 0.25 meter per second (m/s)

Therefore, the average speed will be 0.25 meters per second (m/s) if the boy rides his bike to his friend's house. He travels 2 miles in 8 minutes.

Learn more about speed, here:

https://brainly.com/question/28224010

#SPJ2

Use the pie section above to answer this question.

The pie section shows Earth's composition from the center to the surface. Section IV is most likely composed of

solid iron.

basalt rock.

liquid iron.

granite rock.

And sorry for not putting the picture in the first one

Answers

The answer is Liquid iron.

Biểu thức định luật Raoul là?

Answers

Answer: Định luật Raoult là một định luật hóa học vật lý, với ý nghĩa trong nhiệt động lực học. Được thành lập bởi nhà hóa học người Pháp François-Marie Raoult vào năm 1887, nó nói rằng áp suất một phần của mỗi thành phần của một hỗn hợp chất lỏng lý tưởng bằng với áp suất hơi của thành phần tinh khiết nhân với phần nốt ruồi của nó trong hỗn hợp. Kết quả là, việc giảm áp suất hơi tương đối của dung dịch pha loãng của chất tan không lây bằng với phần nốt ruồi của chất tan trong dung dịch.

Explanation: hope this helps :)

It’s a science question

Why can't more than one variable be changed during an experiment?

O You need to make sure your results match your hypothesis.
O Changing two or more variables makes it difficult to find a cause and effect relationship.
O Change two or more variables would take longer.
O Changing two or more variables would make the experiment more precise.

Answers

Answer:

Changing two or more variables makes it difficult to find a cause and effect relationship.

Other Questions
How to say in french in Impreativ I was going to school People who have certain lung diseases, such as emphysema or lung cancer, often have to use oxygen from tanks. A large volume of oxygen can be put into a small tank because oxygen is a gas, and gases can be_________. easy question - giving brainly if correct !! what color change is anticipated over the course of the reaction? The Life of Madame C. J. WalkerSarah Breedlove was born in 1867 in Delta, Louisiana. Her parents had once been enslaved on a cotton plantation. To help her family, young Sarah did chores, worked in the fields, and washed laundry. In 1874, an outbreak of yellow fever killed Sarahs parents. Sarah, her brother, and her sister struggled to survive alone on their farm.Eventually, Sarah married and had a daughter. After her husband died, Sarah moved to St. Louis, Missouri. To earn aWhich words BEST describe what Sarahs life was like before she attended the lecture in St. Louis?exciting but riskyoption 1 of 4rewarding but unpleasantoption 2 of 4difficult and painfuloption 3 of 4boring and predictable provisional government The square root of the sum of 69 and 31 is an/a_____?A.Rational NumberB.Irrational NumberC.Both rational and irrationalD.Neither rational nor irrational Someone pls help me I will make you brainly Name the compounds represented by thefollowing formulas.a. Ca(NO2)2 c. (NH4)2Cr207b. Fe(OH)3 d. CuCH3COO which historical event was greatly responsible for global stratification Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job? Why does Roger try to steal Mrs. Joness purse?Question 2 options:Another boy dared Roger to steal the purse.Roger wants to buy a pair of blue suede shoes.Roger wants revenge after Mrs. Jones kicked him.Roger needs money to buy food. Which is greater 1.44 or 1.2544 the advantages of electronic data interchange are no longer limited to large companies, because even small firms can exchange and process data such as orders, invoices, and payments using What is the value of this?? Read and choose the correct option. First To answer ill mark brainiest Plz HelpRead the text, choices, and question carefully and choose the best option to answer the question.Patricia starts high school in Honduras today, and she is talking on the phone to her 16-year-old friend, Marcos, who is in Miami, USA. Marcos wants to spend the next school year in Honduras.Based on the text and on what you learned in the lesson, what is true? He will have to be there by February when the school year starts. He will have to be there by June when the school year starts. He will have to be there by August when the school year starts. He will have to be there by November when the school year starts. Look at the screen shot. simplify the expression.-1 (x+9) Can someone help me :(( thank you so so much if u do At 1 p.m., there were 257 visitors in the museum.