This document appears to be a chemistry worksheet or test from a Brazilian high school. It contains 5 chemistry problems and their solutions: 1. A problem involving equations with mass, gravity, and distance. 2. A calculation of liters of solution using molarity. 3. A multi-step stoichiometry problem involving moles, grams, and liters of solution. 4. Another molarity calculation with moles and liters of solution. 5. A series of equations involving volume and molarity to calculate liters of solution.

1. gx
Lx
Lg
10
2
15



FICHA ALPHA DE QUÍMICA Nº04 2ºBIMESTRE/2014
PROFª: CARLA 2º ANO DO ENSINO MÉDIO
GABARITO
1- D
gx
mx
mg
m
xmxChapas
6
2,1
15
2,1
1012,040,030,0
2
2
2
2





gx 16
2-
2- ff VCViCi .. 
fV.2,02,0.25,0 
LVf 25,0
2,0.25,02
OHV
LV OH 05,02

mL50
1- mCm
vm
m
Cm 25,0
4,28
1,7
2,0.142
1,7
.

3-
ff VCVCVC ... 2211 
22.52,0.220.08,0 fC
10012,0
22
04,16,1
xMC f 


4-
ffii VCVC .. 
2,0.3,0.01,0 fC
2
003,0
fC
MC f 015,0
5-
221 VV
12 2 VV 
ff VCVCVC ... 2211 
2.8,0.1.5,0 21  VV
  6,1215,0 11  VV
6,125,0 11  VV
26.15,0 1  V
LV 8,0
5,0
4,0
1 
LV 2,12 