If+the+half-life+period+of+a+first- order+reaction+in+a+is+2+minutes,+h ow+long+will+it+take+[a]+to+reach+2 5%+of+its+initial+concentration?.

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

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.