mole=mass/RMM
= 7.30/ (1+35.5)
= 7.30/36.5
= 0.2moles
joseph kieti answered the question on April 18, 2018 at 11:56
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Starting with lead oxide, describe how you can prepare lead chloride.
(Solved)
Lead chloride is an insoluble salt so it is prepared by double decomposition. So basically we must come up with a soluble salt from the lead oxide, the mix it with another soluble chloride to form the lead chloride.
Date posted:
April 12, 2018
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Answers (1)
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Starting with lead(ii)oxide, describe how you would prepare a solid sample of lead (ii)chloride
(Solved)
Starting with lead(ii)oxide, describe how you would prepare a solid sample of lead (ii)chloride.
Date posted:
April 11, 2018
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Answers (1)
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(Solved)
What do you understand by the term double decomposition?
Date posted:
April 10, 2018
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Answers (1)
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(Solved)
Using kinetic theory explain the difference between solid and liquid
Date posted:
April 10, 2018
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Answers (1)
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Fraction distillation of liquid air usually produces nitrogen and oxygen as the major products
1. Name one substance that is used to remove carbon dioxide...
(Solved)
Fraction distillation of liquid air usually produces nitrogen and oxygen as the major products
1. Name one substance that is used to remove carbon dioxide from the air before it is changed into liquid
2. Describe how nitrogen gas is obtained from the liquid air (boiling points nitrogen = -196 degrees oxygen =-183 degrees
Date posted:
April 10, 2018
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Answers (1)
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Explain how you would separate a mixture of nitrogen and oxygen given that their boiling points are -196^0c and 183^0c
(Solved)
Explain how you would separate a mixture of nitrogen and oxygen given that their boiling points are -196^0c and 183^0c.
Date posted:
April 10, 2018
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Answers (1)
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(Solved)
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Date posted:
April 7, 2018
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Answers (1)
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Carbon and silicon belong to the same group of the periodic table yet carbon (4) oxide is a solid with a high melting point. Explain...
(Solved)
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Date posted:
April 6, 2018
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Answers (1)
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(Solved)
State the law of thermodynamic spontaneity.
Date posted:
April 4, 2018
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Answers (1)
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Give the name of the following coordination compounds?
a)[CoBr(NH3)5]SO4
b)[Fe(NH3)6][Cr(CN)6]
c)[Co(SO4)(NH3)5]+
d)[Fe(OH)(H2O)5]2+
(Solved)
Give the name of the following coordination compounds?
a)[CoBr(NH3)5]SO4
b)[Fe(NH3)6][Cr(CN)6]
c)[Co(SO4)(NH3)5]+
d)[Fe(OH)(H2O)5]2+
Date posted:
April 4, 2018
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Answers (1)
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Give the molecular formulas of the following coordination compounds:
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2.ammonium tetrachlorocuprate(II)
3.sodium monochloropentacyanoferrate(III)
4.potassium hexafluorocobaltate(III)
(Solved)
Give the molecular formulas of the following coordination compounds:
1.hexaammineiron(III) nitrate
2.ammonium tetrachlorocuprate(II)
3.sodium monochloropentacyanoferrate(III)
4.potassium hexafluorocobaltate(III)
Date posted:
April 4, 2018
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Answers (1)
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Give the systematic names for the following coordination compounds
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b)[Pt(NH3)5Cl]Br3
c)[Pt(H2NCH2CH2NH2)2Cl2]Cl2
(Solved)
Give the systematic names for the following coordination compounds
a)[Cr(NH3)3(H2O)3]Cl3
b)[Pt(NH3)5Cl]Br3
c)[Pt(H2NCH2CH2NH2)2Cl2]Cl2
Date posted:
April 4, 2018
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Answers (1)
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When 3.1g of a metal carbonate XC03 were heated to constant mass,2.0g of oxide of meta were formed. on reduction of this oxide ,1.6g of...
(Solved)
When 3.1g of a metal carbonate XC03 were heated to constant mass,2.0g of oxide of meta were formed. on reduction of this oxide ,1.6g of metal remained .calculate the atomic number of X?
Date posted:
April 2, 2018
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Answers (1)
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Briefly describe the anatomy of an original lab sheet used in a chemistry laboratory report writing.
(Solved)
Briefly describe the anatomy of an original lab sheet used in a chemistry laboratory report writing.
Date posted:
March 29, 2018
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Answers (1)
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(Solved)
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Date posted:
March 27, 2018
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Answers (1)
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The formula of the compound formed between a trivalent metal X and a divalent non metal Y is
(Solved)
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Date posted:
March 25, 2018
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Answers (1)
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(Solved)
State the type of polymerization involved in the formation of perspex
Date posted:
March 21, 2018
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Answers (1)
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A certain fertilizer is suspected to be containing nitrate ions. Describe how the presence of nitrate ions can be determined in such fertilizer
(Solved)
A certain fertilizer is suspected to be containing nitrate ions. Describe how the presence of nitrate ions can be determined in such fertilizer
Date posted:
March 21, 2018
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Answers (1)
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(Solved)
Outline 3 major soil chemistry reactions giving appropriate equations involved.
Date posted:
March 19, 2018
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Answers (1)
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Write the structural formula of ethane-1,2-diol(ethylene glycol) and explain why it is a good antifreeze
(Solved)
Write the structural formula of ethane-1,2-diol(ethylene glycol) and explain why it is a good antifreeze.
Date posted:
March 19, 2018
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Answers (1)