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02-24-2008, 10:50 PM
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| Chemistry Help!?
Hey I need some help solving these... I don't really understand them, plz show me how to solve them... thanx 1. There are 7.0 × 10^6 red blood cells in 1.0 mm^3 of blood. How many red blood cells are in 1.0 L of blood? 2. What conversion factor would you use to convert between these pairs of units? a. minutes and hours b. grams and milligrams c. cubic decimeters to milliliters 3. An atom of gold has a mass of 3.271 × 10^-22 g. How many atoms of gold are in 5.00 g of gold? 4. Light travels at a speed of 3.00 × 10^10 cm/s. What is the speed of light in kilometers/hour? 5. A plastic ball with a volume of 19.7 cm^3 has a mass of 15.8 g. Would this ball sink or float in a container of gasoline? Please Help      |
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