Suppose a bag full of ice (450 g) at 0.0°C sits on the counter and begins to melt to liquid water. 1.How much energy must be absorbed by the ice if 3/4 of it melted?


2.Would this problem involve a heating or cooling curve?

oHeating
oCooling

Correct relationship between molecular formula and empirical formula

What is the value of the standard enthalpy of formation of an element in its most stable form?

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.