{"id":184533,"date":"2025-01-21T06:36:59","date_gmt":"2025-01-21T06:36:59","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=184533"},"modified":"2025-01-21T06:37:01","modified_gmt":"2025-01-21T06:37:01","slug":"a-gallon-of-gasoline-carries-with-it-about-1-3-%c2%b7-108-j-of-energy","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/21\/a-gallon-of-gasoline-carries-with-it-about-1-3-%c2%b7-108-j-of-energy\/","title":{"rendered":"A gallon of gasoline carries with it about 1.3 \u00b7 108 J of energy"},"content":{"rendered":"\n<p>A gallon of gasoline carries with it about 1.3 \u00b7 108 J of energy. Given a price of $3 per gallon, how many Joules can you get for a dollar? Electricity goes for about $0.05 per kilowatt hour. A kilowatt hour is just a weird way to write Joules because a watt is a joule per second, and a kilowatt hour is the number of Joules one would get from running 1000 W times one hour (3,600 seconds). In the form of electricity, how many Joules can you get for a dollar? A standard cubic foot of natural gas carries with it about 1.1 \u00b7 106 J of energy. You can get about 5 \u00b7 105 British thermal units (BTUs) of gas for a dollar, and there are about 1,030 BTUs in a standard cubic foot. How many Joules of energy in the form of natural gas can you get for a dollar? A ton of coal holds about 3.2 \u00b7 1010 J of energy and costs about $40. How many Joules of energy in the form of coal can you get for a dollar? Corn oil costs about $0.10 per fluid ounce wholesale. A fluid ounce carries about 240 dietary calories (which a scientist would call kilocalories). A calorie is about 4.2 J. How many Joules of energy in the form of corn oil can you get for a dollar? Rank these as energy sources, cheap to expensive. What is the range in prices?<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>Here is the ranking of energy sources from cheapest to most expensive based on the number of Joules per dollar:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Coal<\/strong>: 800,000,000 J\/$<\/li>\n\n\n\n<li><strong>Natural Gas<\/strong>: 533,980,582.52 J\/$<\/li>\n\n\n\n<li><strong>Electricity<\/strong>: 72,000,000 J\/$<\/li>\n\n\n\n<li><strong>Gasoline<\/strong>: 43,333,333.33 J\/$<\/li>\n\n\n\n<li><strong>Corn Oil<\/strong>: 10,080 J\/$<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Price Range<\/h3>\n\n\n\n<p>The price range between the cheapest (coal) and the most expensive (corn oil) energy source is approximately <strong>79,365:1<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Coal<\/strong> is the cheapest energy source per dollar, as a ton of coal contains a massive amount of energy (3.2 \u00d7 10\u00b9\u2070 J) for a relatively low cost of $40.<\/li>\n\n\n\n<li><strong>Natural gas<\/strong> comes second due to its relatively high energy content and affordability, as you get a large amount of energy (around 533.98 MJ) for each dollar.<\/li>\n\n\n\n<li><strong>Electricity<\/strong> is more expensive due to its production and distribution costs, despite its widespread use and high efficiency in energy transfer.<\/li>\n\n\n\n<li><strong>Gasoline<\/strong> ranks fourth, largely because of its energy density and the added cost of refining and distribution.<\/li>\n\n\n\n<li><strong>Corn oil<\/strong> is by far the most expensive source of energy, primarily due to its use in the food industry and relatively low energy content compared to its cost.<\/li>\n<\/ul>\n\n\n\n<p>This comparison highlights the vast difference in energy costs between fossil fuels and alternative sources like electricity and biofuels.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A gallon of gasoline carries with it about 1.3 \u00b7 108 J of energy. Given a price of $3 per gallon, how many Joules can you get for a dollar? Electricity goes for about $0.05 per kilowatt hour. A kilowatt hour is just a weird way to write Joules because a watt is a joule [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-184533","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=184533"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184533\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=184533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=184533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=184533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}