Chemistry High School

Which phase change requires more heat energy, Heat of fusion or Heat of
vaporization? Explain in terms of particle arrangements.

Answers

Answer 1

Answer:

heat of fusion

Explanation:

heat of fusion is melting which requires more heat energy than heat of vaporization

Related Questions

is the cause of rapid oxidation explosion

Answers

Rapid oxidation results in burning of a material or even an explosion. It happens rapidly and produces light and noticeable heat. Combustion or burning is rapid oxidation. But combustion can also refer to rapid burning where oxygen is not involved

help me out pls (image attached)​

Answers

Protons:13
neutrons:14
electrons:10

Which of the following will Float on pure water?
оа
Ob
A substance with a mass of 1.33 g. and a volume of 1.38 ml.
A substance with a mass of 534.23 grams and a volume of 522.3 mL
A substance with a volume of 436.2 mL and a mass of 4180.23 g.
A substance with a volume of 3.35 mL and a mass of 22.64 g.
ос
Od

Answers

Answer:

ob

Explanation:

becoz when volume increases density decreases.

The change of matter, solid, liquid and gas is called a_________.

Answers

Answer:

This would be a phase change

Explanation:

Since the diffrent phases solid,liquid,gas are changing to other phases.

Sorry for the bad explanation.

What is the melting point of the above substance?

Answers

There is no substance there.. can you elaborate? I’ll answer in the comments

Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds:
(a) I
(b) Sr
(c) K
(d) N
(e) S
(f) In

Answers

i think the answer to this would be f

You pour some juice from a short, wide glass into a tall, narrow glass. What happens to the volume of the juice? Explain your reasoning.

Answers

Answer: the volume increases

Explanation: It increasses because the volume is how tall it is

The volume stays the exact same. It just takes on a different shape because that is, by definition, what a liquid does. It assumes the shape of the container. It does not increase in volume. The other guy is beyond incorrect

Match each element with the element that is most similar to it. If you don’t know the answer, use this periodic table to help you make your best guess.


Drag the tiles to the correct boxes to complete the pairs...

Answers

Answer:

Lithium - Potassium

Carbon - Silicon

Fluorine - Bromine

Oxygen - Sulfur

Explanation:

I hope this helps!! :3

How is particle motion related to thermal equilibrium?

Answers

Answer:

With billions of moving particles colliding into each other, an area of high energy will slowly transfer across the material until thermal equilibrium is reached (the temperature is the same across the material).

where are the electrons found in Bohrs atomic model

Answers

Answer:

Explanation

In the Bohr model of the atom, electrons travel in defined circular orbits around the nucleus. The orbits are labeled by an integer, the quantum number n. Electrons can jump from one orbit to another by emitting or absorbing energy.


2. A substance that is solid, has a shiny orange color, conducts electricity well, and melts
when heated could MOST likely be classified as ?

Answers

Answer: Aluminium

Explanation:

The metals are solid substances, they have shiny luster, they conduct electricity and have high melting point. The aluminium is a kind of metal that have a solid surface, it has a shiny luster, the surface of metal appears to be polished. It conducts electricity and can be used in electrical cords, connections, and devices. It has a high melting point.  

Oxygen and silicon makes up what percentage of the Earth crust.
A) 57% B) 98.5% C) 75% D) 50%

Answers

answer

the answer is C

explanation

this is because the oxygen makes up 46.1%of the earth's surface while silcon is 28.5% and the question says "what makes up" which means you should add them and it becomes 74.6% which Is approximately 75%

Which of the following are an example of a polysaccharide?

A.starch
B.chitin
C.cellulose
D.sucrose

Answers

Examples include storage polysaccharides such as starch, glycogen and galactogen and structural polysaccharides such as cellulose and chitin. Here's the answer, but I think it's A

Plz help me complete this table

Answers

Answer:

9,19,9,10,9,F

15,29,14,15,14,Si

22,47,22,25,22,Ti

25,55,25,30,25,Mn

35,80,35,45,35,Br

8,16,8,8,8,O

47,108,47,61,47,Ag

16,32,16,16,16,S

82,207,82,125,82,Pb

Explanation:

Atomic number = number of protons = number of electrons

Mass number = number of protons + number of nuetrons

which can occur in a physical changen?
​

Answers

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

I WILL GIVE YOU BRAINLIEST!!!

Answers

Answer:

The second option

Answer:

Intent to cause harm

A compound is always made up of the same ____ in the same proportions.

Answers

Answer:

elements

Explanation:

A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds

A mechanical pencil has a mass of 47.4 grams. The volume of the pencil is 15.8 cubic centimeters. What is the density of the pencil?

Answers

density = mass over volume
so
47.4g/15.8cm^3
=3g/cm^3

Answer:

3 g/cm^3

Explanation:

Density can be determined by mass divided by volume, or P=m/V.

This would be 47.4 grams (mass) / 15.8 cubic centimeters (volume). The units are grams per cubic centimeter, noted as g/cm^3.

PLEASE HELP ASAP How many moles are there in 2.25 x 10^25 atoms of Zinc?

How many atoms are there in 9500.0 mg of Fluorine?

Answers

Answer:

There are 6.023 x 10^23 fluorine atoms.

Explanation:

Make a claim about whether air is matter and whether light is matter. Support your claims with evidence and explain your reasoning.

Answers

Answer: air is matter, it has mass and it takes up space

Can someone help me find the 5 digits numbers in here?

Answers

Answer:

20322

Explanation:

Could it have something to deal with the teeth or mouths? The first pumpkin you have two teeth, second pumpkin looks like a 0, the third pumpkin I’m unsure of. The forth pumpkin has two teeth again same with the fifth.

So first pumpkin - 2
The second pumpkin - 0
The third pumpkin I’m unsure of
The forth pumpkin - 2
The fifth pumpkin - 2
So 20?22

Just an idea for ya. Hopefully it helps

How many moles of titanium are there in 32.5 grams of titanium?

Answers

Answer:

0.159 moles of Ti

Explanation:

32.5 g of Ti x (1 mol of Ti / 204.4 g of Ti) = 0.159 moles of Ti

What is the density of a rectangle solid with dimensions
of 15 cm x 25 cm x 5 cm and has a mass of 3000 g?

Answers

Answer:

5625000gm/cm^3

Explanation:

volume=w*h*l=25*15*5=1875cm^3

density=mass*volume

=1875*3000

=5625000gm/cm^3

A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock by placing the rock in a graduated cylinder with 50 mL of water and watched the water rise to 72.7 mL. The student determined the mass is 39.943 g through the use of a triple beam balance. What is the density of the rock?

Answers

Answer:

1.76 g/mL

Explanation:

You need to find the volume.  You can do this by subtracting the volume of the water and the rock by the volume of the water.

72.7 mL  -  50 mL  =  22.7 mL

Now that you have volume, divide the mass by the volume to find the density.

39.943 g/22.7 mL = 1.76 g/mL

Which is more scientific, what is the air made out of? or why is there air?

Answers

Answer:

why is there air

Explanation:

it sounds more smarter and sounds like something someone would want to know

Solution ,colloid ,or suspension

Answers

Answer:

colloid

Explanation:

i think she making meth in her basement

Colloid lol that woman is crazy

An atom contains 22 protons and 26 neutrons. What is its atomic number?

Answers

Answer:

the atomic number is 22

Explanation:

titanium is 22 on the periodic table. the amount of protons is the same as the atomic number

Answer:

22 :)

Explanation:

Green light has a frequency of 6.01 x 1024 Hz. What is the wavelength?

Answers

Answer:

λ= 4.99 * 10^-17

Explanation:

C= F * λ

F= frequency(Hz)

λ= wavelength(m)

C= 3.0 * 10^8

F= 6.01 * 10^24

λ= ?

3.0 * 10^8= (6.01 * 10^24) λ

***Simplify

λ= 4.99 * 10^-17

How cations can become neutral atoms?​

Answers

A neutral atom contains the same number of electrons as protons and that means that the electric charge of the atom is neutral or otherwise known as zero. However, if a particular atom loses an electron, the atom becomes positively charged because there is more protons than electrons.
THIS IS CALLED A CATION.
hope this helps x

Answer:

By gaining elections

Explanation:

Cations are formed when neutral atoms loss electrons and when they gain back the lost electrons the charges are neutralized.

Eg. Cu=Cu2+ + 2é

Cu2+ + 2é=Cu

Which of the three sub-atomic particles is the lightest?

a The proton
b The neutron
c The electron
d orbital

Answers

Answer:

The electron

Explanation:

The electron will be the lightest subatomic particle.

Answer:

The electron

Explanation:

Electron, lightest stable subatomic particle known. It carries a negative charge, which is considered the basic unit of electric charge. The rest mass of the electron is 9.10938356 × 10 −31 kg, which is only 1/1,836 the mass of a proton.

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