Question

write the balanced chemical equations for the following reactions:
a.) The combination reaction that occurs when lithium metal and flourine gas react.
b.) The decomposition reaction that occurs when solid barium carbonate is heated (2 products)
form: a solid and gas
c.) Solid mercury (II) sulfide decomposes into its component element when heated.
d.) The surface of Aluminum metal undergoes combination reaction with oxygen in the air.
e.) Si2H6 burns when exposed to air. (Note that Si is in the same group in the periodic table as C. The states of the reactants and products need not be givn

Answer 1

Please help :)

Answer 2

@-@ Whoah snap Ok hold

Answer 3

Thanks :)

Answer 4

(a)The symbol for lithium is Li. With the exception of mercury, all metals are solids at room temperature. Fluorine occurs as a diatomic molecule. Thus, the reactants are Li(s) and The product will consist of a metal and a nonmetal, so we expect it to be an ionic solid. Lithium ions have a charge, whereas fluoride ions have a charge, Thus, the chemical formula for the product is LiF. The balanced chemical equation is

2Li(s)+ F[small two](g) ------> 2LiF(s)

(b) The chemical formula for barium carbonate is As noted in the text, many metal carbonates decompose to form metal oxides and carbon dioxide when heated. In Equation 3.7, for example, decomposes to form CaO and Thus, we would expect that decomposes to form BaO and Barium and calcium are both in group 2A in the periodic table, moreover, which further suggests they would react in the same way:
BaCO[small three](s) -----> BaO(s)+CO[small two](g)

Answer 5

C. HgS(s) ------> Hg(l)+S(s)
D. 4Al(s)+ 3O[small two](g) -----> 2Al[small two]O[small three](s)

Answer 6

2Li(s)+ F[small two](g) ------> 2LiF(s)
where did the [small two] go?
my answer is this
Li(s)+ F[small two](g) ------> LiF[small two](s)

Answer 7

This should Help you understand it better: http://wps.prenhall.com/wps/media/objects/165/169519/blb9ch0302.html

Answer 8

in letter a it is combination not combustion I mistype it :)
I'll read the contents of the url :)

Answer 9

oupsie

Answer 10

@Kagome2937 Why did you remove the subscript 2 on the product side?