How many constitutional isomers are there with the molecular formula c4h10?

Which of the following is an example of a parasite?

What’s the percent by mass of carbon in c10h14n2

Melting 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.