A student adds 250 mL of water to a beaker containing 38 mL of a 1.7 M solution. What is the new concentration?

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Freezing 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.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false