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describe some of the observations that tell us that a chemical reaction is taking place
what is the percent composition of PbCl2?
A body of density 9.0 grams per centimeter cube(g/cm3) appears to have a mass of 27.0 grams in a liquid of density 1.2 grams per centimeter cube(g/cm3), what is the volume of the solid?
A substance of density 4 grams per centimeter cube(g/cm3) causes 60g of turpentine (density 0.80 grams per centimeter cube(g/cm3)) to overflow from a displacement vessel. What is the mass of the substance?
why are some element are more dangerous than elements
Determine the chemical formula of the following compound from the valencies of the individual atoms
Sodium chloride(Na=+1, Cl=-1)
Aluminium tetraoxosulphte (VI) (AL=-3, SO4=-2)
Sodium chloride(Na=+1, Cl=-1)
Aluminium tetraoxosulphte (VI) (AL=-3, SO4=-2)
a 5-kg of steel alloy is cooled slowly from austenite region to room temperature and found to contain about 0.625 kg of proeutectoid cementite
a-what is the overall composition of this alloy?
b-what is the composition of the proeutectoid cementite at room temperature
a-what is the overall composition of this alloy?
b-what is the composition of the proeutectoid cementite at room temperature
How do I calculate Equ wt of O2?
We needed to calculate the conc.of O2 present in water sample by Winkler's method.
Link to the procedure and reactions: http://dropcanvas.com/6su7m
We had to use this formula: c(O2) (mg/L)=(V1×N×E×1000)/V4
where
V1= Vol of titrant Na2S2O3
V4=Vol of analyte
E=Equ wgt of O2
N=Normality of Na2S2O3 sol
The process and reactn involved are here:
We needed to calculate the conc.of O2 present in water sample by Winkler's method.
Link to the procedure and reactions: http://dropcanvas.com/6su7m
We had to use this formula: c(O2) (mg/L)=(V1×N×E×1000)/V4
where
V1= Vol of titrant Na2S2O3
V4=Vol of analyte
E=Equ wgt of O2
N=Normality of Na2S2O3 sol
The process and reactn involved are here:
What are the modification methods quinine ? to
- chloroquine
- Amodiaquine
- Aminoquinoline
Mefloquine
- Artemisinin antimalarial
- chloroquine
- Amodiaquine
- Aminoquinoline
Mefloquine
- Artemisinin antimalarial
Can we use bismuth nitrate in place of bismuth subnitrate?
