The combustion of ethanol, C2H5OH (l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical equation?

How does the number of atoms presents on each equation side relate to the Law of Conservation Mass

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

What is the half-life of an isotope if 125 g of a 500 g sample of the isotope remains after 3.0 years? a.) 3.5 years b.) 4.5 years c.) 1.5 years d.) 2.5 years

Which statement best describes reproduction among Bactria under ideal conditions

Solid magnesium carbonate (mgco3) and solid sodium nitrate were mixed, placed in water, and stirred. what is observed? 1. mgco3 and nano3 will not dissolve. 2. mgco3 and nano3 will dissolve. 3. mgco3 will remain undissolved and nano3 will dissolve.

In chemical reactions, there is a conservation of what?

If the temperature of water increases as you heat it, the temperature is the independent variable. True False

Which is made by weathering? A. sediments B. minerals C. ash D. magma

Which Of These Is An Indication That A Chemical Reaction Has Occurred? A. Freezing Of A Substance B. Melting Of A Substance C. Boiling Of A Substance D. Formation Of A Gas

When a soda can is dropped, it should not be immediately opened. Why? (A) The soda will squirt out because of decreased temperature. (B) The soda will squirt out because of increased temperature.