Carl must find the volume of a small toy dinosaur. First, he moves the plastic collar around the top of the graduated cylinder to the 50 ml line so it will help him measure the water he is about to add. He then fills the graduated cylinder with 50 ml of water. Then, Carl drops the dinosaur inside the graduated cylinder, and some water splashes out on the lab table. After this, Carl reads the new volume of the water and dinosaur at the top of the meniscus and determines that the volume is 65 ml. He then raises his hand and reports to the teacher that he has determined the volume of the toy dinosaur and it is 65 ml.

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

0.09 moles of sodium sulfate in 12 ml of solution