Calculate the standard molar enthalpy of reaction for the following: 2 C4H10 + 13 O2 > 8 CO2 + 10 H2O

Chemical Standard Enthalpy of Formation (in kJ/mole)

CO2 -393.5

H2O 18.06

C4H10 -125.6

O2 0

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

In which situation can a mixture always be called a solution

Explain what happens at the saturation point when adding salt to water at room temperature.