Which phrase most accurately describes a chemical change? Question 7 options:

A change in taste

A change on the molecular level

A change in form

A change in appearance

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %