What does pressure measure

A. The temperature of a substance

B. The number of molecules present

C. The force of colliding particles

D. The volume occupied by particles

When combined with alcohol some over the counter drugs can:

How much energy is required to heat 250 grams of water from 20.0°C to 80.0°C? The heat capacity of water is 4.186 J/g°C Q=mc∆T

An equimolar mixture of N2 (g) and Ar (g) is kept inside a rigid container at a constant temperature of 300 K. The initial partial pressure of Ar in the mixture is 0.75atm.

What amount of energy is required to completely ionize 27.8 grams of carbon atoms in the gas phase (c (g)) if the ionization energy of c (g) is 1086 kj/mole? answer in units of j?

Is the bond type of PCl3 polar or nonpolar? And is its molecular polarity polar or nonpolar?

Which phrase provides the best definition of mass movement

Choose the statement below related to entropy that is correct. Group of answer choicesHeating always decreases the entropy of a system. The solution formation process usually leads to an increase in entropy.

What is the optimal level of humidity for storing wine? A. 70 percent B. 50 percent C. 20 percent D. 10 percent

What is the product? 3•[1 - 4 5 - 7] [3 - 12 15 - 21] [4 - 1 8 - 4] [3 12 15 21] [4 - 12 8 - 21]

A hormone is an organ that secretes chemical substances into the bloodstream.