Chem'S Moles


2008-5-16 20:31 �p�a

Chem'S Moles



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What is Mole?
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Given that L = 6 * 10 ^ 23
Find that no. of H atoms in 500g of H2O

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Calculate the number of neutrons in 20g of D2O where D = 2H1, O = 16O8

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If the mass of 1 O2 molecule is y, what is the mass of 1 SO2 molecule?

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2008-5-16 21:30 �L���D�Դ�
mass/molar mass = no.of particles/L

Q1�G
(500/16+2)L

Q3�G
1*16(2)=y......(1)
1*(32+32)=x....(2)

(2)/(1)

2=x/y
x=2y

2008-5-16 21:32 �p�a
[quote]�쩫�� [i]�L���D�Դ�[/i] �� 2008-5-16 21:30 �o��
mass/molar mass = no.of particles/L

Q1�G
(500/16+2)L

Q3�G
1*16(2)=y......(1)
1*(32+32)=x....(2)

(2)/(1)

2=x/y
x=2y [/quote]
Thx u very much:1302

2008-5-16 21:34 cagalli
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2008-5-16 21:36 �p�a
[quote]�쩫�� [i]cagalli[/i] �� 2008-5-16 21:34 �o��
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2008-5-16 21:51 ���@��
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2008-5-16 22:17 �p�a
[quote]�쩫�� [i]���@��[/i] �� 2008-5-16 21:51 �o��
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Molar Volume?

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�d�ݧ��㪩��: Chem'S Moles


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