A student weights 5 g of sodium fluoride, formula mass 42, and dissolves it in enough water to fill 250 mL flask. What us the concentration of the solution

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Why does his teacher ask him to balance the equation by including the correct coefficient

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.