The rectified spirit contains________________?
The rectified spirit contains________________?
A. 12% alcohol
B. 90% alcohol
C. 95% alcohol
D. 100% alcohol
A. 12% alcohol
B. 90% alcohol
C. 95% alcohol
D. 100% alcohol
A. 0.76
B. -0.76
C. -0.55
D. 0.55
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
A. HF
B. HBr
C. HC
D. HI
A. NaHCO3
B. NaNO3
C. Na2CO3
D. Na2CrO4
A. H2
B. CH4
C. He
D. NH3
A. 0?C
B. 273.16K
C. ?273.16 K
D. ?273.16?C