Identify each of the following unbalanced reaction equations as belonging to one or more of the following categories: precipitation, acid−base, or oxidation−reduction. msp; Fe ( s ) + H 2 SO 4 ( a q ) → Fe 3 ( SO 4 ) 2 ( a q ) + H 2 ( g ) msp; HClO 4 ( a q ) + RbOH ( a q ) → RbCIO 4 ( a q ) + H 2 O ( l ) msp; Ca ( s ) + O 2 ( g ) → CaO ( s ) msp; H 2 SO 4 ( a q ) + NaOH ( a q ) → Na 2 SO 4 ( a q ) + H 2 O ( l ) msp; Pb ( NO 3 ) 2 ( a q ) + Na 2 CO 3 ( a q ) → PbCO 3 ( s ) + NaNO 3 ( a q ) msp; K 2 SO 4 ( a q ) + CaCl 2 ( a q ) → KCl ( a q ) + CaSO 4 ( s ) msp; HNO 3 ( a q ) + KOH ( a q ) → KNO 3 ( a q ) + H 2 O ( l ) msp; Ni ( C 2 H 3 O 2 ) 2 ( a q ) + Na 2 S ( a q ) → NiS ( s ) + NaC 2 H 3 O 2 ( a q ) msp; Ni ( s ) + Cl 2 ( g ) → NiCl 2 ( s )
Identify each of the following unbalanced reaction equations as belonging to one or more of the following categories: precipitation, acid−base, or oxidation−reduction. msp; Fe ( s ) + H 2 SO 4 ( a q ) → Fe 3 ( SO 4 ) 2 ( a q ) + H 2 ( g ) msp; HClO 4 ( a q ) + RbOH ( a q ) → RbCIO 4 ( a q ) + H 2 O ( l ) msp; Ca ( s ) + O 2 ( g ) → CaO ( s ) msp; H 2 SO 4 ( a q ) + NaOH ( a q ) → Na 2 SO 4 ( a q ) + H 2 O ( l ) msp; Pb ( NO 3 ) 2 ( a q ) + Na 2 CO 3 ( a q ) → PbCO 3 ( s ) + NaNO 3 ( a q ) msp; K 2 SO 4 ( a q ) + CaCl 2 ( a q ) → KCl ( a q ) + CaSO 4 ( s ) msp; HNO 3 ( a q ) + KOH ( a q ) → KNO 3 ( a q ) + H 2 O ( l ) msp; Ni ( C 2 H 3 O 2 ) 2 ( a q ) + Na 2 S ( a q ) → NiS ( s ) + NaC 2 H 3 O 2 ( a q ) msp; Ni ( s ) + Cl 2 ( g ) → NiCl 2 ( s )
Solution Summary: The author explains that a precipitation reaction is an acid base reaction and an electron transfer occurs.
Identify each of the following unbalanced reaction equations as belonging to one or more of the following categories: precipitation, acid−base, or oxidation−reduction.
msp;
Fe
(
s
)
+
H
2
SO
4
(
a
q
)
→
Fe
3
(
SO
4
)
2
(
a
q
)
+
H
2
(
g
)
msp;
HClO
4
(
a
q
)
+
RbOH
(
a
q
)
→
RbCIO
4
(
a
q
)
+
H
2
O
(
l
)
msp;
Ca
(
s
)
+
O
2
(
g
)
→
CaO
(
s
)
msp;
H
2
SO
4
(
a
q
)
+
NaOH
(
a
q
)
→
Na
2
SO
4
(
a
q
)
+
H
2
O
(
l
)
msp;
Pb
(
NO
3
)
2
(
a
q
)
+
Na
2
CO
3
(
a
q
)
→
PbCO
3
(
s
)
+
NaNO
3
(
a
q
)
msp;
K
2
SO
4
(
a
q
)
+
CaCl
2
(
a
q
)
→
KCl
(
a
q
)
+
CaSO
4
(
s
)
msp;
HNO
3
(
a
q
)
+
KOH
(
a
q
)
→
KNO
3
(
a
q
)
+
H
2
O
(
l
)
msp;
Ni
(
C
2
H
3
O
2
)
2
(
a
q
)
+
Na
2
S
(
a
q
)
→
NiS
(
s
)
+
NaC
2
H
3
O
2
(
a
q
)
The table shows the tensile stress-strain values obtained for various
hypothetical metals. Based on this, indicate which is the most brittle
and which is the most tough (or most resistant).
Breaking strength Elastic modulus
Material Yield strength Tensile strength
Breaking strain
A
(MPa)
415
(MPa)
(MPa)
(GPa)
550
0.15
500
310
B
700
850
0.15
720
300
C
Non-effluence fracture
650
350
Please correct answer and don't used hand raiting
Materials. The following terms are synonyms: tension, effort and stress.
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