NAME: ~ /~

PERIOD:

HOMEWORK 9.4 ~rOICHI()/I1ETfZY

a. Review your notes.b. Answer the following:

1. The reaction between solid sodium and iron (III) oxide (Fe203) is one in a series of reactions that inflates anautomobile air bag:

6Na (s) + FeZ03 (s) -> 3NazO (s) + 2Fe (s)

If IOO.OgNa and IOO.OgFeZ03 are used in this reaction, determine:

a. the mass of solid iron producedjFe = I()O.ON 1~~tJ4.

, a~.qqJ Na.

b. the limiting reactant

IlvIrR J:elJ)3Isq, 703 Fel..O~

Fe'Z...03

c. the reactant in excess ,J 0..

d. the mass of excess reactant that remains after the reaction is complete , 9Cl", tJ.j tJa. ~:: /00. OJ FCz-03. \ l~,.lhI. 03 \ ~•.••~ tV&... \ ~.;). 0 ti. = ec. 378-, r I$9.70" r-tL03 1 I•...~ Fe~03 T '/I>1to1 t:J;

j No.. R.I::./YIAfN,NG .: /00.0 - 8<'0 (( : L 13. <0 1 12. Photosynthesis reactions in green plants use carbon dioxide ana water to produce glucose (C6H1206) and oxygenaccording to the following reaction:

6C02 (g) + 6H20 (I) -> C6H1206 (aq) + 602 (g)

If 88.0g C02 and 64.0g H20 are used in this reaction, determine:

a. the mass of glucose (C6H1206) produced C IIC ~I0 _ 2 c-~ CO ~ /4,,.f COz.. /","( r. r-r/~j V n. 141 - - I "1'1.0/ J C4l.. C,IIV.t CO}..

b. the limiting reactant

/1It) t/z.O/f.Olj 14;.0

COd

z: /()(p,7cJ

c. the reactant in excess 1~2..0

d. the mass of excess reactant that remains after the reaction is complete

J I-/lOJ..VUd:: 2.f. OJ C01.. / ht,.l CO 2. ~ ••.•,.II.fl.0 1 Ie, 0 2.5 J.l2.~I t/l.{.OIJ COz.. ~,,,,,fe01.-It:'\~ Ilz:o

OVER

&1. o , t%,O = @-O-.J7

3. Iron is obtained commercially by the reaction of hematite (Fe203) with carbon monoxide:

Fe203 (s) + 3CO (g) -> 2Fe (s) + 3C02 (g)~

\If 840.3g CO and 3992.5g Fe203 are used in this reaction, determine:

a. the mass of solid iron producedj Fe..: 2l(().:3 Co IM~ C,O

C). &-.o~ Co

ss. B-5 C? r:e/1>1-8 I-e

.3 re .: YJ9J. Sj F;:_?3 ll~~~,_-+-J_VV\_j_h-=-e_-t-S~S_.8~.s5::...h....;;.e- I ~70jhz.03 1W\..eh~03 /hlt-fFe

b. the limiting reactant Co

c. the reactant in excess Fe 2..03

d. the mass of excess reactant that remains after the reaction is complete IJ 7 I 0G, re ()3 ~:= 81(0.:3 Co II-V\~ CO /Wllt:ez03 )S~ r-et 3:);Z I J..f. 0 'J CO ;}m,./ co 1",..1ht 03 I

j/\JMi~4. An alkaline battery produces electricity according to the following reaction:

Zn (s) + 2Mn02 (s) + H20 (I) -> Zn(OH)2 (s) + Mn203 (s)

If25.0g Zn and 30.0g Mn02 are used in this reaction, determine:

I~1J t" {(j{-/)2.- 9Q. tf 1.3 tll(Ofl)z:: 3s.0 II v••t--l t.n 1V>1,.R -tf) (0 H )>z- d-

- ~3q(PJ, .--------';)

z: 399 J,S- - 01370 t~~91J~

b. the limiting reactant IIV\ 02-.

c. the reactant in excess l Y)

d. the mass of excess reactant that remains after the reaction is complete

j i:~ =~O,Og ;~D~1~;;.~~'~~::]~.~'-\~~~9j~~'1 -

~ ": 3Jj tY) ~wy z: c1S, a

! ,

- G'·,

1/,3 = !;;U-:l~