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
creativ13 [48]
3 years ago
6

1) How many moles are in 4.0x10^24 atoms?

Chemistry
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

<h2>6.64 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{4 \times  {10}^{24} }{6.02 \times  {10}^{23} }   \\  = 6.644518...

We have the final answer as

<h3>6.64 moles</h3>

Hope this helps you

You might be interested in
2.0 moles of a monatomic ideal gas undergoes an isobaric process in which the temperature changes from 260 k to 320 k. what is t
Alik [6]

The change in the internal energy of the gas is 1.5×10∧3 J.

The internal energy of an ideal gas is directly proportional to the temperature of the gas:

ΔE = 3/2 × n × R × ΔT

ΔT = 320 K - 260 K

ΔT = 60 K; change of the temperature

n = 2.0 mol: amount of a monatomic ideal gas

R = 8.1 J/mol×K;the ideal gas constant

ΔE = 3/2 × 2 mol × 8.1 J/mol×K × 60 K

ΔE = 1500 J

ΔE = 1.5×10∧3 J;  the internal energy of the gas

Isobaric process is a type of process in which the pressure of the system stays constant.

More about an isobaric process: brainly.com/question/28106078

#SPJ4

4 0
1 year ago
Why does the velocity of catalyzed reaction reach maximum at certain<br> concentration of enzyme?
OleMash [197]

Answer:

Because the total energy of the enzyme has been used up and actions already complete

Explanation:

Catalyst are substance known to speed up rate of chemical reaction just like taking a short pathway. When velocity of catalyzed reaction reach maximum, at that moment reaction has reach it full potential (there is an equilibrium in reaction). there won't be any changes on further addition, and mostly indicate that Reaction is Complete

4 0
3 years ago
Ammonia is produced by the Haber process. The equation is shown.
choli [55]

Answer:

option D

Explanation:

Increasing the temperature increases the yield of ammonia and speeds up the reaction as chemical reaction is affected by temperature.

7 0
2 years ago
Read 2 more answers
What is the bronsred base of NO2- +H2O HNO2 +OH-
kramer
Bronsted lowry bases

NO2- amd OH-
4 0
3 years ago
Write the atomic symbol for the isotope of bismuth with 125 neutrons.
vlada-n [284]

First, isotopes <u>are the atoms of a single element whose nuclei have a different number of neutrons</u>, and therefore, differ in mass numbers. You should know that atoms are formed by a nucleus that has a small size and is made up of protons and neutrons. The nucleus is surrounded by a cloud of electrons, which are found in a region of the atom called the cortex.

The mass number, represented as A, <u>is the sum of the number of protons and neutrons in the nucleus</u>. On the other hand, the atomic number (Z) is <u>the number of protons that exist in the nucleus. </u>

The isotopes of an element X are represented as follows,

<em>(see first attached picture)</em>

It should be noted that the number of neutrons of a chemical element can be calculated as the difference A-Z.

<u>The atomic and mass numbers of bismuth with 125 neutrons are</u>:

Z = 83

A = 83 + 125 = 208

Thus, the atomic symbol of the bismuth isotope with 125 neutrons is:

<em>(see second attached picture)</em>

5 0
3 years ago
Other questions:
  • What is the molar mass of a substance?
    7·2 answers
  • 2) Os foguetes são utilizados para levar pessoas ao espaço (os astronautas), mas principalmente cargas como, por exemplo, os sat
    7·1 answer
  • A measurement of the amount of solute that is dissolved in a given quantity of solvent; usually expressed as mol/L.
    13·1 answer
  • PLZ HELP!! I WILL GIVE BRAINLIEST!! 50+PTS!! PLZ HELP!!!! In an exothermic reaction at equilibrium, what is the effect of loweri
    7·2 answers
  • [16]. A 3.0 L container holds a sample of hydrogen gas at 150 kPa. If the pressure increases to 2 atm and the temperature remain
    14·1 answer
  • Wegener's claim was that the continents drifted from their original positions in Pangea
    6·1 answer
  • A ____ taste is a characteristic property of all acids in aqueous solution.​
    6·1 answer
  • Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify the m
    12·1 answer
  • Give reasons :
    15·2 answers
  • A ____________ is a large area of open land that has been turned into a container for our trash.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!