8/8/2019 1er Bac Physi(Devoir 1)
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I- ml50=V)S( III 3FeCll/mol1=C. (FeCl3 , 6H2O).
-1
2- :)(2)()(3
)(23 ................)6,( lll OHCFeOHFeC aqaqs +++
3- 4- III
II- L72=V C80= hPa1013=P. -12- V
3- :M(H)=1g/mol ; M(O) =16g/mol ; M(Cl) =35g/mol ; M(Fe) =
56g/mol ; R = 8,314 (SI)
):)131:
d = 20cm 45 . -1 -2 -3 -42:
(S)m=100g ABCD) .( 1- ABVB=4m/s.1.1-
BA
PW
)(v
1.2- AB1.3- (S) AB1.4- ABCD . BCD -22.1-
CB
PW
)(v
DC
PW
)(v
2.2- hr h -2.3CD -2.4
:AB = 2mg = 10N/kgr =1,5mh = 1m = 603:
)S(kg,50=m s/rad20=2:r =10cm * g = 9,8N/KgAB = 80cm30 =
. -12- ABAB T -32 -4
-56- F = 50N
20 .
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