\
11. What is the mass of a sample that has a density of 6.89 gil. The initial volume in the graduated cylinder was
35.0 mL and the final volume once the metal was placed in the water was 49.1 mL. (Watch your units!)
40)
fV\ =:-
I \,~
~'3S;C()vvv~
\)
1)
I
l()'(OI41
~
\f-:(~-~qj!X-)
12. What is the percent error of your lab if you obtained through lab 9.84 g of a product.
The accepted
product was 10.45 g.
\!\--(/\
l~'-ts-- ~_~
A
\ <\)
l
It-''5
13. How many nanograms (ng) are there in 654214 decigrams (dg)?
D1
Ic;)yallf~
\
14. Predicting Products.
15.
If the reaction works, predict ~ducts
16.
Ca(Br03h + Na -7
CH3CH20H +,..j
Balance the following
tG'5Lfoll4'K{D'3~
C
and balance the equation.
--- 1Jl
If the reaction does not
WK.
3
Predict and Balance!,s
a.
z:
I cJ9\
work, state NR.
a.
VC%,
\K!
0)..
-7
j_
CoL
+
\A- c:a
equation:
17. What is the average atomic mass for thallium, TI? The two stable isotopes
and their abundances are listed here.TI-205 has a mass of 205.059 amu
with an abundance of 70.48 % and TI-203 has a mass of 203.059 amu with
an abundance of 29.52 %
.2'D5 ~~
l\.
<J #/D~ ~:::-
~O 2> .054 <. <D_ ~~S-)-::
II.fV# S-c).S'G,.
S1 ' c;~.3D
-~() <f, Cf b 0 l
---------------