Which statement best describes the relationship between forces?
2 answers:
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Answer:
Molar Mass=193.9738 g/mol
Molar Mass≅194g/mol
Explanation:
Consider the formula:
m=ΔT/K_{f}
where:
ΔT is freezing point depression
K_{f} is freezing point depression constant
m is the morality=(moles of solute/kg of solvent)
Now:
Now:
0.07733 (moles of solute/kg of solvent) *0.010 kg of solvent
moles of solute(Caffeine)
Molar mass = Mass of solute/moles of solute
Molar Mass=
Molar Mass=193.9738 g/mol
Molar Mass≅194g/mol
Answer:
b. 5.6 mA
Explanation:
As the voltmeter is connected to the resistor in parallel. The new resistance of the systems is
R = 1/0.0214 = 46.78 Ω
The voltage is
So the new current now of the system is
So about 1.2056 - 1.2 = 0.0056 A or 5.6mA is drawn away.