answersLogoWhite

0


Best Answer

Atomic weights refer to ATOMS. Water is a MOLECULE made up of 3 atoms, it therefore does not have an atomic weight, it has a MOLECULAR weight.

You calculate the molecular weight by adding up the atomic weight of all the atoms in the molecule.

Waster is made up from 1 atom of Oxygen (atomic weight 16) and 2 atoms of Hydrogen (atomic weight 1)

16+1+1 = 18

The molecular weight of water is therefore 18.

-------------------------------------------------------------------------------------

The Atomic Mass of H is 1.008, and the atomic mass of O is 16.

So 1.008*2+16=18.016

User Avatar

Wiki User

13y ago
This answer is:
User Avatar
More answers
User Avatar

AnswerBot

8mo ago

The effective atomic weight of water, H2O, is calculated by adding the atomic weight of two hydrogen atoms (1.008 g/mol each) and one oxygen atom (16.00 g/mol). Therefore, the effective atomic weight of water is approximately 18.02 g/mol.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

The chemical formula for water is H2O. Hydrogen has a molecular weight of 1.008 and Oxygen has a molecular weight of 15.999. The total molecular weight then is 18.015.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

In Chemistry Equivalent weight = Molecular Mass/ n- factor = 18/1 = 18

This answer is:
User Avatar

User Avatar

Wiki User

17y ago

It is approximately 18.0194 amu.

This answer is:
User Avatar

User Avatar

Wiki User

15y ago

18.02 amu (atomic mass units)

This answer is:
User Avatar

User Avatar

Wiki User

16y ago

500043

This answer is:
User Avatar

User Avatar

Wiki User

14y ago

16 g

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Effective atomic weight of water
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the effective atomic number of water?

The effective atomic number of water is approximately 7.42. This value takes into account the contribution of the hydrogen atoms in water in addition to the oxygen atom. It is a way to characterize the overall electron density of the molecule.


What is the weight of something in the water?

Technically, the object's weight is the same. The effective or measured weight, however, will be the original weight minus the weight of displaced water.


What is chemical atomic weight?

Atomic weight = Weight of protons + Weight of neutrons


How would we determine the molecular weight for a molecule water h2o?

To determine the molecular weight of a molecule like water (H2O), you would add up the atomic weights of all the atoms in the molecule. For water, you would add the atomic weight of two hydrogen atoms and one oxygen atom, which gives you a molecular weight of approximately 18.015 atomic mass units (amu).


What is a synonym for atomic mass?

Unified atomic mass unit


Why is the weight of rock different in and out water?

The weight of a rock is less in water because water exerts an upward buoyant force on the rock, reducing its effective weight. This is due to the principle of buoyancy, where the weight of the water displaced by the rock counteracts the rock's weight.


What is carbons atomic weight?

Atomic Number = 6. Atomic Weight = 12.011


What is the atomic weight of carbon?

The atomic weight of carbon is approximately 12.01 atomic mass units.


What is the atomic weight of germanium?

The atomic weight of germanium is 72.63 atomic mass units.


Atomic weight of water?

Hydrogen weighs 1.01 M and Oxygen weighs 16.0 M and so the atomic weight of H2O is (2(1.01)+16.0) equal to 18.02 M


What is the atomic weight of Rb?

85.4678 is the atomic weight of Rb.


What is the atomic mass or weight of Silicon?

Atomic weight 28.086