Which carbonate mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?
What will be an ideal response?
calcite
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The dynamo effect is believed to produce the ____________________ of the Sun
Fill in the blank(s) with correct word
What type of galaxy has a mix of young and old stars, an abundant amount of gas and dust, ongoing star formation, and a definitive shape?
A. elliptical galaxies B. irregular galaxies C. spiral galaxies D. All types of galaxies share these features
A diatomic molecule has 18 × 10-5 eV of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 0 quantum state?
A) 9.0 × 10-5 eV B) 6.0 × 10-5 eV C) 3.0 × 10-5 eV D) 1.5 × 10-5 eV E) 0 eV
The maximum permissible workday dose for occupational exposure to radiation is 26 mrem
A 55-kg laboratory technician absorbs 3.3 mJ of 0.40-MeV gamma rays in a workday. The relative biological efficiency (RBE) for gamma rays is 1.00. What is the ratio of the equivalent dosage received by the technician to the maximum permissible equivalent dosage? A) 0.32 B) 0.30 C) 0.25 D) 0.23 E) 0.28