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
natita [175]
2 years ago
6

Convert 7.1x10^25 molecules of water to moles

Chemistry
1 answer:
ruslelena [56]2 years ago
8 0

Answer:

<h2>117.94 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{7.1 \times  {10}^{25} }{6.02 \times  {10}^{23} }  \\  = 117.940199...

We have the final answer as

<h3>117.94 moles</h3>

Hope this helps you

You might be interested in
Which instrument is used to measure mass?
lara [203]
A triple beam balance is used to measure mass
5 0
2 years ago
Read 2 more answers
In bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus,
labwork [276]

Answer is: energy is absorbed.

According to the Bohr model of the atom:

1. Electrons orbit the nucleus in orbits that have a set size and energy.

2. Energy levels of electrons are discrete (certain discrete values of energy).

3. Electrons can jump from one energy level to another, absorbing or emitting electromagnetic radiation with a frequency ν (energy difference of the levels).

5 0
3 years ago
What did Rutherford’s gold foil experiment indicate?
Klio2033 [76]
The answer would be D. 
4 0
3 years ago
A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.143 g the mass of copper in the
tensa zangetsu [6.8K]

Mass of Oxygen: 0.0159 grams

Moles of Oxygen: 9.94x10^-4

To find the mass of oxygen, subtract the mass of copper from the total mass.

0.143-0.1271=0.0159

There are 0.0159 grams of Oxygen.

To find how many moles there are, divide the given amount of oxygen by the molar mass (atomic mass) of oxygen because that mass is the same as one mole of oxygen.

Molar mass of Oxygen: 16.00

0.0159/16.00=9.94*10^{-4}

There are 9.94*10^-4 moles of Oxygen.

6 0
1 year ago
State 3 differences between a solution, suspension and colloid.​
Art [367]

Explanation:

solution 1) homogeneous

2) do not scatter light

3) cannot be separated by filtration

Colloids 1) heterogeneous

2) scatter light

3) cannot be separated by filtration

suspension 1) heterogeneous

2) may either scatter light or be opaque

3) can be separated by filtration

8 0
2 years ago
Other questions:
  • A _ reaction occurs when a substance usually containing carbon reacts with oxygen to produce energy in the form of light and hea
    12·1 answer
  • A balanced equation tells you the mole ratio of all reactants and products. Using the chemical reaction below how many moles of
    11·2 answers
  • The elements in the periodic table are arranged in order of
    13·1 answer
  • What do solids maintain thier shape where a fluids do not? <br>does anybody know the answer
    15·2 answers
  • Determine the molarity for the fixer Sodium carbonate decahydrate (I dissolved 127.62 grams of sodium carbonate for every 4 lite
    13·1 answer
  • For which of the following processes will \DeltaΔS be negative?PbCl2(s) = Pb2+(aq) + 2 Cl-(aq)MgO(s) + CO2(g) = MgCO3(s)CO2(aq)
    7·1 answer
  • I'm having trouble understanding what "the difference in energy between the products and reactants from the surroundings" means.
    14·1 answer
  • An alpha particle has the same composition as a A) hydrogen nucleus B) deuterium nucleus C) beryllium nucleus D) helium nucleus​
    11·1 answer
  • Which of the following describes the products of a chemical reaction?
    8·1 answer
  • Which of the following is NOT true about energy?*
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!