What information can be learned from bloodstains at a crime scene?

Tracy is studying for her chemistry exam and she reads that a nitric acid molecule is made of one hydrogen atom, one nitrogen atom and 3 oxygen atoms. The chemical formula for nitric acid is a. HNO3 Oьно OCHN O d. HO3 Oe. HN30

Which of the following elements is most likely to be produced during a nuclear fusion reaction in the sun? A) Helium-4 B) Hydrogen-1 C) Uranium-235 D) Uranium-238

At statement matter can be neither created nor destroyed by chemical means, but it can be changed form to another is the law of

Which state (s) of matter will flow and take the shape of its container?

Balance each equation by writing the correct coefficient (put a space in the box if no coefficient is needed). Then, identify the type of reaction taking place. 1. CaCO3 → CaO+CO2 ___CaCO3 → ___CaO+___CO2 is a decomposition reaction. 2.

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

For the separation of the unknown mixture, you are instructed to isolate the amine followed by the acid and finally the neutral. Does the order matter? If not, what other orders could be followed?