Which of the following phase transitions is/are endothermic? 1. liquid water freezing to a solid at its normal freezing point of 0.0 °c.2. the sublimation of solid carbon dioxide into the gas phase.3. gaseous sulfur dioxide condensing into a liquid at its boiling point of –10.0 °c. a) 1 only b) 2 only c) 3 only d) 1 and 2 e) 1, 2, and 3

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid

When microscope slides are stained to show blood cells, the small red blood cells that appear on the slides are much numerous than the large white blood cells. this supports the concept that