What brown substance in a cigarette causes lung cancer?

Chemist lectures about the following definition for acids and bases. The acid-base behavior is analyzed in terms of how electrons are transferred between compounds rather than in terms of how hydrogen ions are transferred.

The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5 F2 ( g. + 2 NH3 ( g. N2F4 ( g. + 6 HF ( g. ( a. If you have 73.7 g NH3, how many grams of F2 are required for complete reaction? b.

A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change, change that into an idiom

Describe how activity within the earth results in earthquakes

One atom of silicon can properly be combined in a compound with a. two atoms of oxygen. b. three atoms of hydrogen. c. one atom of chlorine. d. four atoms of calcium.

In the formula XSO4 the symbol X could represent the element

A neutral atom possesses an atomic number of 13 and an atomic mass of 27. three electrons are lost. from what region of the atom are they lost?

The density of solid Ag is 10.5 g/cm3. How many atoms are present per cubic centimeter of Ag?

24g copper is submerged in water in a graduated cylinder, and the total volume increases by 2.7 mL. who's is the density of copper?

Does gadolinium have an odor?