Solving Atoms & Molecules: 1.00g Water/Ice Cube

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Homework Help Overview

The discussion revolves around calculating the number of molecules and atoms in a 1.00g ice cube, specifically focusing on the properties of water (H2O) and its molecular composition.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the relationship between mass and the number of molecules, questioning how to derive the number of atoms from the given data. There is also a discussion about the correct method to calculate the number of atoms based on the number of molecules.

Discussion Status

Some participants have provided calculations and attempted to clarify the relationship between grams and molecules. However, there is a disagreement regarding the correctness of one participant's answer for the number of atoms, indicating a lack of consensus on that point.

Contextual Notes

Participants are working within the constraints of the problem statement and are discussing the implications of the molecular weight of water and the conversion between grams and moles.

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Homework Statement


A cubic centimeter of water has a mass of 1.00g. How many molecules does it contain?
How many atoms are in 1.00g ice cube?


Homework Equations


1 mole=6.02 x 10^23 molecules(or atoms)
1 mole of H20= 18g

The Attempt at a Solution


The answers are: 3.3 x10^22 molecules.( I got this answer)
1 x 10^23 atoms( I didn't get this answer)

Please help! Thanks!
 
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So if 18 g of water has 6.02*10^23 molecules, how many does 1 g have?
 
1g has 3.3 x 10^22 molecules..
how do i find the atoms?
 
Water is H2O, two hydrogen atoms and one oxygen atom
 
BTW, did you get 2400 on the SAT? If so, congrats!
 
no...that's the dream score..lol

Ok..how do you get 1x 10^23 atoms?? for the second question?
i got the answer for the 1st question..
 
You don't. 1*10^23 is the wrong answer. Somebody screwed up and divided by 3 instead of multiplying by 3.
 

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