Which type of matter is composed of two or more elements that are chemically combined in a fixed proportion

Do x-rays travel slower than infrared

FeBr+NH4S->FeS+NH4Br

How did this impact your ability to trade?

How does helium form (5-8) sentences

Using the idea that reactions occur as a result of collisions between particles, explain why reaction rates depend on the concentration of the reactants.

Select the more electronegative element in each pair. a. Cl or Fb. Se or Oc. N or Asd. Na or Mg

Find the molar mass of potassium dichromate, K2Cr2O7

Zn (s) + cu2 + (aq) →zn2 + (aq) + cu (s). part a under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 51.0 g of copper is plated out?

13 This word describes the circulatory system that provides nutrients and oxygen to living cells of the body.

Write the outer electron configuration for the group 15 element in the fourth period.