The most common molecule in a molecular cloud is
A) ammonia, NH3.
B) molecular hydrogen, H2.
C) carbon monoxide, CO.
D) methane, CH4.
E) water, H2O.
B
You might also like to view...
Acceleration is greater for a satellite when it is at the
A) apogee (farthest point). B) perigee (closest point). C) zenith. D) same acceleration at all of the above places.
Compounds of carbon are classified as ______________ compounds
Fill in the blank(s) with correct word
At 10°C, which is more concentrated—a saturated solution of sodium nitrate, NaNImage, or a saturated solution of sodium chloride? (See figure shown above.)
A) At 20°C a saturated solution of sodium nitrate, NaNImage, is more concentrated than a saturated solution of sodium chloride, NaCl. B) At 10°C a saturated solution of sodium chloride, NaCl, is more concentrated than a saturated solution of sodium nitrate, NaNImage. C) At 10°C a saturated solution of sodium nitrate, NaNImage, is more concentrated than a saturated solution of sodium chloride, NaCl. D) At 25°C a saturated solution of sodium nitrate, NaNImage, is more concentrated than a saturated solution of sodium chloride, NaCl.
Going from most significant to least significant, the atmospheric gases contributing to the greenhouse effect include
A) carbon dioxide and water vapor. B) carbon dioxide, water vapor, methane, nitrous oxides, and CFCs. C) water vapor and carbon dioxide. D) water vapor, CFCs, carbon dioxide, and ozone.