Sign In
Ask Question
Jay Dickson
Chemistry
18 November, 11:52
How many molecules are in 42.3g sample of water
+2
Answers (
1
)
Davin
18 November, 12:00
0
The number of molecules is 1.4140*10^24 molecules
Explanation:
To know the number of molecules, we need to determine how many moles of water we have, water has molar mass of 18.015g/mol
This means that one mole of water molecules has a mass of 18.015g.
42.3g * 1 mole H2O/18.015g
= 2.3480 moles H2O
We are using avogadros number to find the number of molecules of water
2.3480 H2O * 6.022*10^ 23moles / 1mole of H2O
That's 2.3480 multiplied by 6.022*10^23 divided by 1 mole of H2O
Number of molecules = 1.4140 * 10^24 molecules
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“How many molecules are in 42.3g sample of water ...”
in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
A bottle of fertilizer contains a 6.0 M solution of ammonium nitrate (NH4NO3). If you wanted to fertilize your garden with 15.0 L of a 0.18 M solution, what quantities of the liquid fertilizer and water would you mix together to spray on your garden
Answers (1)
Are these mixtures or pure substance? 1. water 2. blood 3. the oceans 4. iron 5. brass 6. uranium 7. wine 8. leather 9. table salt (NaCl)
Answers (1)
What is the empirical formula of a substance that consists of 85.60% carbon and 14.40% hydrogen?
Answers (1)
Name one way in which oxygen from the air reacts slowly with another materal
Answers (1)
A thin sheet of metal foil has a total area of 23.28in^2. What is the thickness (in mm) of this sheet. (mass=20.675g density=2.70g/cm^3)
Answers (1)
New Questions in Chemistry
What happens to a reactant molecules when forming product molecules
Answers (1)
Which is the atomic number of an atom with six valence electrons
Answers (1)
O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?
Answers (1)
Convert 970. mm Hg to atm.
Answers (1)
The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given kinetic energy.
Answers (1)
Home
»
Chemistry
» How many molecules are in 42.3g sample of water
Sign In
Sign Up
Forgot Password?