The percentage composition by mass of nitrogen dioxide is approximately
a. 43% N and 57% O.
b. 33% N and 67% O.
c. 30% N and 70% O.
d. 47% N and 53% O.
c
You might also like to view...
A region of expanding air tends to
A) cool. B) warm. C) both of the these D) neither of these
The near point of a farsighted person's uncorrected eyes is 80 cm. What power contact lens should be used to move the near point to 25 cm from this person's eyes?
A) 2.8 diopters B) -2.8 diopters C) -4.0 diopters D) -4.2 diopters E) 4.2 diopters
The maximum possible speed in nature is the speed of light
Indicate whether the statement is true or false
A 25.0-mH inductor is connected in series to a 20.0-? resistor through a 15.0-V dc power supply and a switch. If the switch is closed at t = 0 s, what is the time constant of this circuit?
A) 0.800 × 10-3 s B) 0.800 × 10-2 s C) 0.500 s D) 1.25 × 10-3 s E) 12.5 × 10-2 s