Tuesday, July 14, 2009

The names of the compounds FeS, NaCI, NaOH, and Pb(Cn)2 all end in the suffix?

a: -ide


B: -ite


C: -ic


D: -ate





2: Examine the following unbalanced chemical equation: CO2+C ---%26gt;CO. Which of the following is the correctly balanced form of this equation?





A: 2CO2+C---%26gt; CO


B: CO2 +C--%26gt; 2CO


C: CO2 + C2 --%26gt;CO


D: CO2+C--%26gt; C2O

The names of the compounds FeS, NaCI, NaOH, and Pb(Cn)2 all end in the suffix?
1. A


2. B
Reply:1)a iron sulfide, sodium chloride, sodium hydroxide, not sure on the last one





2)b Start by looking at the number of carbons... 2 on the left, one on the right, so add the coefficient 2 on the right:


CO2+C ---%26gt; 2CO





Then look at the number of oxygen atoms, 2 on both sides, so that's it.
Reply:all of them end in ide


sodium chloride.. table salt


sodium hydroxide .. I would have to think of the other 2.. but if 2 out of 4 are.. I would def. go with choice aA
Reply:A - ide


2 - 2C0
Reply:1. A


FeS- ferrous sulphide


NaCl-sodium chloride


NaOH-sodium hydroxide


Pb(Cn)2- lead cyanide {not so sure}





2.B
Reply:1) A


2) B
Reply:1) A


2)B
Reply:1) A


2) B
Reply:1.a


2.b


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