List 2 of the important properties of gases.

Which one of the following is a balanced equation? A. 2Ca (s) + O2 (g) → 2CaO (s) B. 6Ca (s) + 2O2 (g) → 6CaO (s) C. 4Ca (s) + O2 (g) → 2CaO (s) D. 6Ca (s) + 4O2 (g) → 2CaO (s)

Which phrase accurately describes what living organisms strive for? A. Fluctuating internal temperatures B. Continuous change within system parts C. No response to different external conditions D. Stable internal enviroment

insert the missing coefficients in the following partially balanced chemical equations S+6HNO=HSO4+NO+H2O

How high is the empire state building

Which of these statements is not true? A. Molecules arc made up of atoms. B. Protons are smaller than quarks. C. Atoms are larger than protons. D. Protons are made up of quarks.

Why are Van der Waals forces important? A) They determine how strong dipole moments will be in polar covalent molecules B) They are the strongest type of intermolecular force that can act on polar and non-polar molecules C) They are primary

When heat is added to or removed from a substance, it may change its state. What state will most likely result if heat is added to a liquid?

Chemical Reactions Lab Procedures: 1. Place a 1cm long piece of white chalk in a clear plastic cup. 2. Add 5 mL of vinegar to the cup. 3. Record your observations. If you were performing the procedures above you would need to A.

How many moles of oxygen are in 0.53 moles of co 22?

The car wit fastest acceleration is the tempest. it has an acceleration of 6.1 m/s. suppose the car accelerates from rest to a final speed of 30. m/s. how long does it take the tempest to reach this speed?