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valina [46]
2 years ago
9

What is the number 6.02x10^23 also known as?

Chemistry
1 answer:
Natalija [7]2 years ago
6 0

Answer:

Avogadro's number or Avogadro's constant.

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How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

4 0
3 years ago
PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE H
vfiekz [6]

Answer:

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6 0
2 years ago
A molecule contains five atoms and has a molecular weight of 85 g per mole. the atoms are of elements with atomic numbers 1, 6,
inessss [21]

Answer:

            Dichloromethane

Explanation:

As we know the atomic number given belongs to following elements, i.e.

Atomic #                   Element                      M.Mass

   1                           Hydrogen                    1 g.mol⁻¹

   6                          Carbon                        12 g.mol⁻¹

   17                         Chlorine                      35.5 g.mol⁻¹

Also the molecular formula of Dichloromethane is,

                           =  CH₂Cl₂

Putting molar masses of each element,

                          =  (12)₁  +  (1)₂  +  (35.5)₂

                          =  12  +  2  +  71

                          =  85 g.mol⁺¹

Result:

         Hence the only possible structure containing 5 atoms is Dichloromethane.

6 0
3 years ago
A student mixes some sugar into a cup of hot water. The sugar dissolves in the liquid. What are the BEST ways for the student to
polet [3.4K]
You would have to evaporate the water to get just the sugar

6 0
3 years ago
0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution what is the molarity
Sunny_sXe [5.5K]
Molarity =  moles of solute / liters of solution

M = 0.5 / 0.05

M = 10.0 mol/L⁻¹

hope this helps!
4 0
3 years ago
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