Matter must have two physical properties: 1. have mass, and 2.

Use bond energies to calculate the enthalpy change for the following reaction. H2 (g) + CO2 (g) ⟶ H2O (g) + CO (g)

How many atoms are in 5 moles of sodium hydroxide

Wegener used that same dinosaur fossil have been found in different continents to support his theory of continental A. false B. true

Arrange the following alkyl bromides in order from most reactive to least reactive in an SN₂ reaction: 1-bromo-2-methylbutane, 1-bromo-3-methylbutane, 2-bromo-2-methylbutane, and 1-bromopentane.

In order to change a solid to a liquid or a liquid to a gas, what is needed?

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?

The suffix "-megaly in the term gastromegaly means:

The harder you strike a drum, the greater the sound's A) medium B) volume C) frequency D) pitch

The equation X + Y 2Z has the rate law equation shown below. Which of the following statements best describes the relationship of X on the rate of the reaction? rate = k[X]2[Y] Changing X has no effect on the reaction rate.

What moves in or out of a substance during a change of state?