aahneise02
15.09.2021 •
Chemistry
Gasoline has a density of 0.749 g/mL . There are 454 grams in a pound and 3.7854 L in a gallon. How many Pounds does 19.2 gallons of gasoline weigh? Respond with correct number of significant figures in "E" notation.
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Ответ:
119.9 pounds
Or 1.199e2 in E notation
Explanation:
First, find the total amount of liters.
3.7854 x 19.2 = 72.67968
There are 72.67968 liters of gasoline
Then, convert the liters to milliliters
72.67968 x 1000 = 72,679.68
There are 72,679.68 milliliters of gasoline
Now, convert it to grams
72,679.68 x 0.749 = 54,437.08032
There are 54,437.08032 grams of gasoline
Convert the grams to pounds
54,437.08032 ÷ 454 = 119.9054632599119
Round it with sig figs and you will find out the weight of the gasoline is 119.9 pounds.
Ответ:
72*(2/3)= 48= long