The compound H2CO3 is called ________.
A) carbonic acid
B) carbonous acid
C) carbonium acid
D) bicarbonic acid
Question 2
The mole fraction of argon in dry air near sea level is 1.818 10-5 where the molar mass of argon is 39.948. The concentration of argon in the atmosphere is ________ ppm.
A) 1.07 108
B) 0.934
C) 9.34 106
D) 18.18
E) 9.34 10-9