Concept explainers
Interpretation:
The mass of an oxygen molecule given as
Concept introduction:
The ordinary numbers are written as the power of
In scientific notation, the non-zero significant numbers are written along with the power of
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Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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- A chemist must dilute 28.6 mL of 801. mM aqueous aluminum sulfate (Al₂(SO4)3) solution until the concentration falls to 183. mM . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Round your answer to 3 significant digits. 0 x10 X S ?arrow_forwardDetermine the volume of hexane that contains 5.33 × 1022 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol. Provide answer in mL to 3 significant figures. Use decimal notation and do not include the unit.arrow_forwardAnalysis of a sample showed that it contained 68.3% lead, 10.6% sulfur, and 21.1% oxygen. What is the number of mole of lead present in 100 g of the sample? Note: Express your answer in proper significant figures. Write only the numerical answer. Do not include the unit. If your answer is in exponential form, example: 2.05 x 1024, use the following format: 2.05e24arrow_forward
- A chemist prepares a solution of aluminum chloride (AIC13) by measuring out 13. umol of aluminum chloride into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum chloride solution. Be sure your answer has the correct number of significant digits. mmol L X Garrow_forwardExpress (7.64x10^5) g in SI base units using scientific notation.arrow_forwardA chemist must prepare 650, mL of 1.00 M aqueous-calcium bromide (CaBr) working solution. She'll do this by pouring out some 2.62 bromide stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the calcium bromide stock solution that the chemist should pour out. Round your answer to 3 significant digits. ml. 0.2 X mol L G aqueous calciumarrow_forward
- How many grams F in 650.1 g Br2F6? Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal.arrow_forwardMultiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits. mol 78.08 L. | mol x 12. L = mol 836.1 mol + 30.6 L 0.934 mL x 0.90 mL %3D Continuearrow_forwardA chemist prepares a solution of potassium iodide (KI) by measuring out 338. g of potassium iodide into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium iodide solution. Round your answer to 3 significant digits. mol/L D X 3arrow_forward
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