Answer the following question and please answer them correctly!

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11. Composition C-4 is a plastic explosive having a density of 1.05 g/cm?. Calculate the mass of a brick of C-4 measuring 93 mm x 102.0 mm x 178.0 mm. Enter the correct numeric value to 2.0% precision. Express scientific notation like 4.295-15 kg Grade This Exercise 12. Convert the temperature -70.0 F to Kelvins. Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 K Grade This Exercise 13. Calculate the mass of a star having a diameter of 5E5 km and an average density of 1.3 g/cm?. Enter the correct numeric value to 2.0% precision. Express scientific notation like 4.29E-15 kg Grade This Exercise The gasoline tank of an automobile contains 55.0 kg of gasoline. The gasoline combines with 220 kg of oxygen. What is the total combined mass of the carbon dioxide and water produced by combustion in the engine? Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 kg Grade This Exercise The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object(e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of 1.71 kg? The densities of gold and water are 19.30 and 1.00 g/cm3, respectively. Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 cm Gold can be hammered into decorative gold leaf, which is only 1.00E-07 m thick. If 1.95 troy ounce of gold is hammered into gold leaf, what is the area that can be covered when used for decoration? 1 troy ounce = 31.1 g, and the density of gold is 19.3 g/cm3. Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 m2