Define chemistry in relation to biology and physics

An unknown gas has a pressure of 699.0 mm Hg at 40.0 C. What is the temperature at standard pressure?

An igneous rock that contains mostly plagioclase feldspar and about 30 percent dark silicate minerals has a composition that is

Which label shows the overall enthalpy change and is the reaction exothermic or endothermic? A, exothermic. B, exothermic. C, endothermic. D, endothermic.

A beaker has 0.2 M of Na2SO4. What will be the concentration of sodium and sulfate ions?

Is it worth it? In other words, will the benefits we receive from an action be worth the costs? The process of weighing these decisions is called a.

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

A base can neutralize an acid. true or false

Hydrochloric acid (12.0 ml of 0.233 m) is added to 296.0 ml of 0.0579 m ba (oh) 2 solution. what is the concentration of the excess h + or oh - ions left in this solution?

Which are the organs of the digestive system