Carolyn put drops of Bromothymol Blue (BTB) into a flask, then exhaled bubbles into the flask with a straw for 30 seconds. Use one complete sentence to answer each question.

a. Predict what she would most likely observe happening to the water?

b. Explain what the BTB will indicate (tell us) about the water.

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 %

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom