Write the molecular formula for a compound with the possible elements c, h, n and o that exhibits a molecular ion at m + = 100.090.

Phenylacetic acid, HC8H7O2 is one of the substances that accumulates in the blood of persons with phenylketonuria, an inherited disorder that can cause death. A 0.085 M solution of HC8H7O2 is found to have a pH of 2.68.

If 20 grams of aluminum react with 200 grams of bromide to form aluminum bromide and no aluminum is left after the reaction, but 23 grams of bromine remained unreacted. how many grams of aluminum bromide were formed

Zinc is used to form a corrosion inhibiting surface on galvanized steel. Determine the number of Zn atoms in 2.50 mol of Zn

An atom has 8 electrons and a mass of 17. What would the correct symbol be? A. 17gF B. 90 C. 25,61 D. 17,0

Which diatomic molecule is formed when the 2 atoms share 6 electrons?

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves

Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67*10^{-27} kg.

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2