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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:

Ineed ! i have no clue how to do this problem.

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?