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1.
Scientific Notation and Significant Figures
Rewrite the following numbers in standard scientific
notation:
a. 10459000
d. 0.0089754
b. 340,900
e. 6701924
c. 0.05798
f. 0.00004857
2. Rewrite the following numbers in decimal form:

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.