3. The average volume of a red blood cell is approximately 90 1L, but this can v

Question

3. The average volume of a red blood cell is approximately 90 1L, but this can vary by tens of thousands of femtoliters. Express the average value in liters using correct exponential notation. a. 90 x 10L b. 9 x 10-15 L C. 9.0 x 10-15L d. 9 x 10-L e. 9.0 x 104L 4. titanium dioxide (TiO2) is added, the volume is 31 a. 0.873 g/cm b. 0.87 g/cm c. 4.2 g/cms A graduated cylinder is filled with water to the 25.0 mL mark. After 27.5 gof LCalculate the density of Tio2 d. 4.23 g/cm e. 2.05 g/cm 5. Which ground-state electron configuration is impossible? 6. The rightest star closest to Earth, aside from our own sun, is Sirius. Assuming light travels 2.998 x 108 meters in one second, how long does it take light to travel the 8.4 x 1013 km distance from Sirius to Earth? a. 32,000 years b. 110 years c. 8.9 years d. 78 hours e. 3.6 hours 9

Explanation / Answer

Ans 13 : e) 9.0 x 10-14 L

1 femtoliter = 10-15 Liter

So 90 fL = 90 x 10-15 L

= 9.0 x 10-14 L

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