Avolcanic eruption produces a large amount of smoke which affects the lungs of animals. which of these earth systems interact during this event?
a) geosphere, atmosphere, and biosphere
b)geosphere, atmosphere, and cryosphere
c)atmosphere, cryosphere, and hydrosphere
d)atmosphere, biosphere, and cryosphere

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)

What is the molecular formula of ferrous nitrate and ferric nitrate