Which changes of state result in a decrease in the kinetic energy of the particles?

Answers

Answer 1

Answer: Liquid into solid, gas into a liquid, gas into a solid (deposition).
Kinetic energy is all about motion. If you think about it, the particles are going from a more chaotic state to a more orderly arrangement which reduces the kinetic energy.

Related Questions

What are three possible dangers when dealing with acids with low pH and bases with high pH
What is the hardest form of carbon
Effects of warm tropical waters meeting with cool air.
How many mL of 0.200 M KBr would be required to make a 0.0495 M solution of KBr when diluted to 175.0 mL with water?
What type of chemical reaction is happening here? 8Fe + S8 --> 8FeS

The kinetic molecular theory helps explain relationships between

Answers

gases, energy, temperature, phases.

It explains the relationships between molecules of gases, liquids and solids.

At stp how many liters of oxygen are required to react completely with 3.6 liters

Answers

If it is assumed that this reaction is taking place at STP (standard temperature and pressure) then one mole of gas occupies 22.4L

You can then calculate that 3.6L of Hydrogen contains 0.16mol
1mol/22.4L x 3.6L = 0.16mol

Every 2 moles of Hydrogen require 1 mole of oxygen to form water. Therefore half of the number of moles of oxygen are required.
0.16mol/2 = 0.08mol

Again, we know that at STP 1 mol occupies 22.4L
0.08mol x 22.4L/mol = 1.79L of O2 needed.

Also 3.6/2 = 1.8 All ideal gasses will occupy the same ammount of space at STP

4.75 mL is the same as 0.00475 L.
True or False

Answers

True. 1mL equals 1x10⁻³L so to convert mL into L you have to move the decimal point over 3 places to the left.

I hope this helps. Let me know in the comments if anything is unclear.

How many moles of mgci2 are there in 332 g of the compound

Answers

find molar mass of MgCl2 so M=95.211 g/mol
N=m/M
N=332/95.2
N=3.487
dont forget to round your sig figs

How many grams of NaOH were dissolved to make a 1.25 L solution of 2.92 M NaOH?

Answers

Answer:

146. g

Explanation:

1) Data:

a) mass of solute = ?

b) volume of solution = 1.25 liter

c) M = 2.92 mol/liter

d) solute NaOH

2) Formulae:

a) Molarity, M = number of moles of solute / volume of solution in liters

b) mass in grams = molar mass × number of moles

3) Solution:

a) Calculate number of moles of solute:

M = number of moles of solute / volume of solution in liters

⇒ number of moles of solute = M × volume of solution in liters

⇒ number of moles of solute = 2.92 mol/liter × 1.25 liter = 3.65 mol

b) Molar mass of NaOH = 39.997 g/mol (you can take this number from internet or calculate it using the atomic masses of Na, O, and H).

c) Calculate the mass of solute:

mass in grams = molar mass × number of moles = 39.997 g/mol × 3.65 mol = 145.98905 g = 146. g

The answer must be reported with 3 significant figures, so it is 146. g.

When a rock turns into (), all the material it contains is destroyed and melted by extreme heat. For this reason, igneous rocks don’t contain any()
.

Answers

Magma, Fossils is the correct answer.

When a rock turns into magma all the material it contains is destroyed and melted by extreme heat.
For this reason, igneous rocks don't contain any fossils.

The term magma represents molten rocks. The heat is so much that it even melts the rocks, so any chances of preserving fossils is negligible.
Igneous rocks are formed after the cooling and solidification of magma. So it is obvious they can't preserve any previous information before the magma.

Learn more:

brainly.com/question/17687020

Answer: a and c

Explanation:

Other Questions

What forms when iron-53 decays?

A catalyst is _____.-Choices- not used up in a reaction the product of a combustion reaction one of the reactants in a single-replacement reaction a solid product of a reaction

The percent by mass of carbon in HC2H3O2 is equal to__.

Why aliminium is use in manufacturing aeroplanes