Chemistry, 12.10.2020 06:01 supiine1405
Physical and Chemical Changes Separation of a Mixture
Mass of evaporating dish + watch glass=273.5g
Mass of evaporating dish, watch glass + sample=278.5g
Mass of sample=5.0g
Determining percent of NaCl in mixture:
Mass of evaporating dish, watch glass, and solids(after water washes)=286.1g
Mass of NaCl=
Percent of NaCl in unknown=
Determining Percent of CaCO3 in mixture:
Mass of dish, watch glass, and SiO2( final weighing)=239.2
Mass of CaCO3=
Percent of CaCO3 in unknown=
Determining a Percent of SiO2 in mixture:
Mass of SiO2=
Percent of SiO2 in unknown=
I really don't understand how to math all of the stuff so if you could also provide how to solve it, that would be helpful!
Answers: 3
Chemistry, 22.06.2019 16:10
Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)
Answers: 2
Chemistry, 22.06.2019 20:30
A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction
Answers: 2
Physical and Chemical Changes Separation of a Mixture
Mass of evaporating dish + watch glass=273.5g...
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