Wednesday
December 4, 2013

# Posts by Princess

Total # Posts: 114

chemistry- empirical formulas
since i dont have a teacher. I tried and this is what i came up with. 55.0/atomic massGa 55.0/69.723= 1.27 (rounded) 45.0/atomic massF 45.0/18.998404= 2.37 (rounded) If this is corect what do I do after this. If not can you help me with an headstart please.?

chemistry- empirical formulas
Calculate the empirical formula of a molecule with the following percent compositions: 55.0% gallium (Ga) and 45.0% fluorine (F). mass of 100g #of Moles in 100g of the compound Ga55.0% _____ ______ F45.0% ______ _______ c. Determine the molecular formula of a molecule having a...

chemistry
Which describes a source of radiation heat? A. Liquid or gas circulating to move the heat B. The sun sending out electromagnetic waves C. Two molecules colliding with each other D. Objects having kinetic energy because of their motion

chemistry
What must be known for the rate constant to be calculated from the rate law?

chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O and H+. (.5 poin...

chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O and H+. (.5 poin...

chemistry- Energy in Matter
Question 1: Kinetic Theory (7 points) a. Briefly state what the kinetic theory says. (2 points) b. Put the following molecules in order from least kinetic energy to greatest. (2 points) Cool water _____ Frozen water _____ Warm water _____ Water vapor _____ c. What temperature...

chemistry
A swimming-pool worker wants the pool's pH to be 7.2. She comes by to test the water and finds that the pH is 9.2. What should she do to correct this situation?

chemistry
What is the pOH of a solution with [OH-] = 2.0 10-2?

chemistry this is confusing to me please help
chemistry. but its done online and i dont have an teacher to sit down and explain the lessons to me.!!

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