Answer the following question and please answer them correctly

Activity 2

6. If a car that gets 14.9 MPG travels at 31 miles per hour for 78 minutes, how many gallons of gasoline are consumed in the trip? Enter the correct numeric value to 2.0% precision. Express scientific notation like 4.295-15 gallons Grade This Exercise 8. What is the volume of 2.7 kg of mercury at 25 C? You can use any reliable reference to look up the density of mercury. Enter the correct numeric value to 2.0% precision. Express scientific notation like 4.295-15 ml Grade This Exercise 9. If the price of gasoline in Belgium is 1.56 per liter and the value of 1.00 is equal to $1.32, calculate the cost gasoline in dollars per gallon. Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.295-15 dollars per gallon Grade This Exercise 10. The density of gasoline is 0.774 g/cm. How much does 21.0 gallons of gasoline weigh, in kilograms? Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.295-15 kg Grade This Exercise 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 1. 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? learn Enter the correct numeric value with the appropriate number of significant figures, Express scientific natation like 4.29E-15 kg Grade This Exercise 2. 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/cm2, respectively. learn Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 cm3 Grade This Exercise 3. 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 cm Enter the correct numeric value with the appropriate number of significant figures. Express scientific notation like 4.29E-15 m