1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serggg [28]
3 years ago
13

What are mole particle calculations ?​

Chemistry
2 answers:
Sedbober [7]3 years ago
5 0

Avogadro's number is a very important relationship to remember: 1 mole = 6.022×1023 6.022 × 10 23 atoms, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro's number. To convert from atoms to moles, divide the atom amount by Avogadro's number (or multiply by its reciprocal).

Sav [38]3 years ago
5 0

Answer:

The mole (symbol: mol) is the base unit of amount of substance in the International System of Units (SI). It is defined as exactly 6.02214076×1023 particles, which may be atoms, molecules, ions, or electrons. If you want to know how many moles of a material you have, divide the mass of the material by its molar mass. The molar mass of a substance is the mass in grams of one mole of that substance.

Calculating the number of particles...

1.The number of particles in a substance can be calculated using:

2.Number of particles = Avogadro constant × the amount of substance in mol.

3.Calculate the number of water molecules in 0.5 mol of water.

4.Number of water molecules = Avogadro constant x amount of substance in mol.

You might be interested in
A 10 M concentrated stock solution of NaCl was used to prepare 5 liters of diluted 1 M solution. Which of the following statemen
vfiekz [6]

Answer:

D. The volume of the solvent used was less than 5 liters.

Explanation:

  • We have the rule: the no. of moles before dilution equal the no. of moles after dilution.

<em>(MV) before dilution = (MV) after dilution.</em>

M before dilution = 10.0 M, V before dilution = V of stock = ??? L.

M after dilution = 1.0 M, V after dilution = 5.0 L.

<em>V before dilution = V of stock = (MV) after dilution/M before dilution</em> = (1.0 M)(5.0 L)/(10.0 M) = <em>0.5 L.</em>

∴ The volume of the stock used is 0.5 L.

The volume of the solvent used is 4.5 L.

  • So, the right choice is:

<em>D. The volume of the solvent used was less than 5 liters.</em>

7 0
3 years ago
Read 2 more answers
A grating has 470 lines/mm. how many orders of the visible wavelength 538 nm can it produce in addition to the m = 0 order?
maria [59]

Three complete orders on each side of the m=0 order can be produced in addition to the m = 0 order.

The ruling separation is

d=1 / (470mm −1) = 2.1×10⁻³ mm

Diffraction lines occur at angles θ such that dsinθ=mλ, where λ is the wavelength and m is an integer.

Notice that for a given order, the line associated with a long wavelength is produced at a greater angle than the line associated with a shorter wavelength.

We take λ to be the longest wavelength in the visible spectrum (538nm) and find the greatest integer value of m such that θ is less than 90°.

That is, find the greatest integer value of m for which mλ<d.

since  d / λ = 538×10⁻⁹m / 2.1×10 −6 m ≈ 3

that value is m=3.

There are three complete orders on each side of the m=0 order.

The second and third orders overlap.

Learn more about diffraction here : brainly.com/question/16749356

#SPJ4

7 0
2 years ago
What happens when plaster of Paris is treated with co2
umka21 [38]
) adding phosphoric acid, said phosphoric acid reacting with said calcium carbonate to release gaseous carbon dioxide bubbles, and said water providing water of hydration to said plaster of Paris to form gypsum that sets around said carbon dioxide bubbles thereby forming said foamed plaster.
5 0
3 years ago
An atom of which element in the ground state contains electrons in the fourth principal energy level?
krok68 [10]
Kr 
                Hope this helps!!!
6 0
3 years ago
What is a polar liquid?
BabaBlast [244]
Polar liquids have both negative and positive ends.
3 0
3 years ago
Read 2 more answers
Other questions:
  • The ka for hbro is 2.0x10-9. what is the ph of<br> a.55m
    10·1 answer
  • For a certain experiment, a student requires 100 milliliters of a solution that is 8% HCl (hydrochloric acid). The storeroom has
    9·1 answer
  • Compounds with very high vapor pressures must have very minimal intermolecular forces true or false
    14·1 answer
  • PLEASE HELP!!!   
    13·1 answer
  • The specific heat of aluminum is 0.125 cal/g °C. If 12.5 grams of aluminum were heated from 20.0 °C to 100.0 °C, calories of hea
    6·2 answers
  • The temperature inside a diesel engine is high enough for two
    8·1 answer
  • Which group on the periodic table will react with oxygen to give covalent compounds with formula XO2?
    8·1 answer
  • Which statement would help determine if a cell is a plant or animal cell?
    12·2 answers
  • How do weather models predict the weather?
    10·1 answer
  • In which of the following places would you MOST likely an organism classified in the domain Archaea?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!