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
mafiozo [28]
3 years ago
14

How many moles are in 2.04 × 1024 molecules of h2o?

Chemistry
1 answer:
EleoNora [17]3 years ago
5 0

Answer:

3.4moles

Explanation:

Given parameters:

Number of molecules = 2.04 x 10²⁴

Unknown: Number of moles

Solution

We use the concept of mole to solve this kind of problem.

A mole is the amount of substance that contains Avogadro's number of particle i.e 6.02 x 10²³ molecules

Solving

For elementary particles:

Number of moles = \frac{number of particles}{6.02 x 10^{23} }¹ molecules

Number of moles = \frac{2.04 x 10^{24} }{6.02 x ^{23} }

Number of moles of H₂O = 0.34 x 10¹ = 3.4moles

You might be interested in
how much heat is released when 70.9g of water at 66C cools to 25C? The specific heat of water is 1 cal/gC
Serga [27]

Answer:

-12162.47 joules (or -12000 joules when accounting for significant figures)

Explanation (btw I used 1 cal as 4.184 joules because SI units are better):

q = m c delta T

q = (70.9) (4.184) (25 - 66)  

q = (70.9) (4.184) (-41)

q = -12162.47 joules

7 0
3 years ago
What are the units of density
Nataliya [291]

Answer:

Kg/ ml

Explanation:

Hope I help you

thank you

6 0
3 years ago
Create a comic strip that follows the journey of energy from the sun as it travels through the humpback whale
Arisa [49]

The path of energy flow from the sun to the humpback whale is as follows:

  • Sun---> Plankton ---> Small fishes ---> Humpback whale.

<h3>What is energy?</h3>

Energy is the ability to do work.

The primary source of energy on the earth is the sun.

The energy from the sun is used by producers to produce food on which other organisms depend on.

The energy from the sun gets to the humpback whale through producers such as plankton.

The path of energy flow from the sun to the humpback whale is as follows:

  • Sun---> Plankton ---> Small fishes ---> Humpback whale.

Learn more about energy flow at: brainly.com/question/21786633

4 0
3 years ago
Will make brainliest
Dafna11 [192]

Answer:

Boron

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

For example

In given atomic model we can see that there are five electrons out side the nucleus it means this atomic model is of that element which have atomic number 5 and it is boron.

It has 5 electron 5 proton and 6 neutrons.

It means its atomic number is five and mass number is 5+6 = 11

8 0
3 years ago
This is what your screen should look like. start with Hydrogen -1 and drag 2 neutrons over the to the nucleus. What happens to t
Alekssandra [29.7K]

Answer:

A tritium is produced.

Explanation:

Combining two additional neutrons to the nucleus of the hydrogen atom makes it a tritium, Hydrogen-3.

   neutron is designated  ¹₀n; this shows a mass number of 1 and no atomic number

  Hydrogen-1 is designated as ₁¹H; a mass number of 1 and atomic number of 1. This particle is actually more like a proton.

        Combining both:

                  ₁¹H + 2¹₀n → ³₁H

This is a nuclear reaction and in balancing such reaction equation, mass numbers and atomic numbers must be conserved.

 

4 0
3 years ago
Other questions:
  • From what are chemical sedimentary rocks formed?
    11·2 answers
  • Why s orbital does not contain degenerate orbital​
    14·1 answer
  • How are plant, animal, and bacterial cells alike and<br> different
    13·1 answer
  • Do you expect the ionization energies of anions of group 17 elements to be lower than, higher than, or about the same for neutra
    13·1 answer
  • What is a monoatomic molecule
    5·2 answers
  • 9. Explain why you can't write the formula of the ionic compound that forms between Fe<br> and S?
    6·1 answer
  • PLEASE! 46 POINTS!
    15·1 answer
  • I + I -----&gt; I2 + 146.3 kJ Is this reaction exothermic or endothermic?
    11·1 answer
  • An atom with atomic number of 20 and a plus 1 charge<br> (Help)
    7·1 answer
  • True or false condensation occurs when liquid is converted to a solid
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!