{"id":259902,"date":"2025-07-19T06:19:23","date_gmt":"2025-07-19T06:19:23","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=259902"},"modified":"2025-07-19T06:19:25","modified_gmt":"2025-07-19T06:19:25","slug":"what-is-the-molar-mass-of-acetaminophen-c8h9no2-3","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/19\/what-is-the-molar-mass-of-acetaminophen-c8h9no2-3\/","title":{"rendered":"What is the molar mass of acetaminophen, C8H9NO2"},"content":{"rendered":"\n<p>What is the molar mass of acetaminophen, C8H9NO2? Show calculations.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>To calculate the molar mass of acetaminophen (C8H9NO2), we sum the molar masses of each element present in the compound, based on the number of atoms of each element.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Identify the elements and their quantities<\/h3>\n\n\n\n<p>Acetaminophen has the molecular formula C8H9NO2. This means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>8 carbon (C) atoms<\/li>\n\n\n\n<li>9 hydrogen (H) atoms<\/li>\n\n\n\n<li>1 nitrogen (N) atom<\/li>\n\n\n\n<li>2 oxygen (O) atoms<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Find the atomic masses<\/h3>\n\n\n\n<p>From the periodic table, the approximate atomic masses of the elements are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbon (C): 12.01 g\/mol<\/li>\n\n\n\n<li>Hydrogen (H): 1.008 g\/mol<\/li>\n\n\n\n<li>Nitrogen (N): 14.01 g\/mol<\/li>\n\n\n\n<li>Oxygen (O): 16.00 g\/mol<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Calculate the molar mass<\/h3>\n\n\n\n<p>Now, we calculate the molar mass by multiplying the atomic masses of each element by the number of atoms of that element in the formula:Molar&nbsp;mass&nbsp;of&nbsp;acetaminophen=(8\u00d712.01)+(9\u00d71.008)+(1\u00d714.01)+(2\u00d716.00)\\text{Molar mass of acetaminophen} = (8 \\times 12.01) + (9 \\times 1.008) + (1 \\times 14.01) + (2 \\times 16.00)Molar&nbsp;mass&nbsp;of&nbsp;acetaminophen=(8\u00d712.01)+(9\u00d71.008)+(1\u00d714.01)+(2\u00d716.00)<\/p>\n\n\n\n<p>Breaking it down:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>8\u00d712.01=96.08\u2009g\/mol8 \\times 12.01 = 96.08 \\, \\text{g\/mol}8\u00d712.01=96.08g\/mol<\/li>\n\n\n\n<li>9\u00d71.008=9.072\u2009g\/mol9 \\times 1.008 = 9.072 \\, \\text{g\/mol}9\u00d71.008=9.072g\/mol<\/li>\n\n\n\n<li>1\u00d714.01=14.01\u2009g\/mol1 \\times 14.01 = 14.01 \\, \\text{g\/mol}1\u00d714.01=14.01g\/mol<\/li>\n\n\n\n<li>2\u00d716.00=32.00\u2009g\/mol2 \\times 16.00 = 32.00 \\, \\text{g\/mol}2\u00d716.00=32.00g\/mol<\/li>\n<\/ul>\n\n\n\n<p>Now, summing all these values:96.08+9.072+14.01+32.00=151.162\u2009g\/mol96.08 + 9.072 + 14.01 + 32.00 = 151.162 \\, \\text{g\/mol}96.08+9.072+14.01+32.00=151.162g\/mol<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Round the result<\/h3>\n\n\n\n<p>The molar mass of acetaminophen is approximately <strong>151.16 g\/mol<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p>The molar mass is the sum of the masses of the atoms in one mole of the compound. Acetaminophen&#8217;s molar mass, as calculated above, tells us that one mole of acetaminophen weighs about 151.16 grams. This calculation is important because it allows chemists to determine how much of the compound is needed for a given amount of substance in moles, which is crucial for stoichiometric calculations in reactions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-1023.jpeg\" alt=\"\" class=\"wp-image-259910\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>What is the molar mass of acetaminophen, C8H9NO2? Show calculations. The Correct Answer and Explanation is: To calculate the molar mass of acetaminophen (C8H9NO2), we sum the molar masses of each element present in the compound, based on the number of atoms of each element. Step 1: Identify the elements and their quantities Acetaminophen has [&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-259902","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259902","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=259902"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259902\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=259902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=259902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=259902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}