A chemistry student needed to prepare 250 mL of 0.147 M CaCl2 for her experiment. She has a stock solution in a bottle labeled "0.64 M CaCl2. How many mL of stock CaCl2 she needs to transfer to the 250-mL volumetric flask in order to get the solution she wanted? mL stock CaCl2 solution. Do NOT enter unit. Report your final answer with 3 SFs.

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

What will most likely happen when two bromine atoms bond together?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.