{"id":198925,"date":"2025-03-10T14:49:27","date_gmt":"2025-03-10T14:49:27","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=198925"},"modified":"2025-03-10T14:49:29","modified_gmt":"2025-03-10T14:49:29","slug":"the-molar-mass-of-carbon-is-12-g-mol","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/10\/the-molar-mass-of-carbon-is-12-g-mol\/","title":{"rendered":"The molar mass of carbon is 12 g\/mol"},"content":{"rendered":"\n<p>The molar mass of carbon is 12 g\/mol. How many moles are there in 3 grams of carbon?<\/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<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p>The number of moles (( n )) of a substance is calculated using the formula:<\/p>\n\n\n\n<p>[<br>n = \\frac{\\text{mass}}{\\text{molar mass}}<br>]<\/p>\n\n\n\n<p>Given:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mass of carbon = 3 grams<\/li>\n\n\n\n<li>Molar mass of carbon = 12 g\/mol<\/li>\n<\/ul>\n\n\n\n<p>[<br>n = \\frac{3 \\text{ g}}{12 \\text{ g\/mol}}<br>]<\/p>\n\n\n\n<p>[<br>n = 0.25 \\text{ moles}<br>]<\/p>\n\n\n\n<p>Thus, <strong>there are 0.25 moles of carbon in 3 grams of carbon.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Moles are a fundamental concept in chemistry that help relate the mass of a substance to the number of its constituent particles (atoms, molecules, or ions). The mole is defined as <strong>Avogadro\u2019s number (6.022 \u00d7 10\u00b2\u00b3 particles) of any substance<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>Understanding Molar Mass<\/strong><\/h4>\n\n\n\n<p>The <strong>molar mass<\/strong> of an element is the mass of one mole of its atoms, expressed in grams per mole (g\/mol). For carbon, the molar mass is <strong>12 g\/mol<\/strong>, meaning <strong>1 mole of carbon atoms weighs 12 grams<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>Using the Formula<\/strong><\/h4>\n\n\n\n<p>To determine the number of moles in a given mass of a substance, we use the equation:<\/p>\n\n\n\n<p>[<br>n = \\frac{\\text{mass of substance}}{\\text{molar mass of substance}}<br>]<\/p>\n\n\n\n<p>This equation shows that if we have a certain mass of a substance and know its molar mass, we can find how many moles it contains.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. <strong>Substituting the Given Values<\/strong><\/h4>\n\n\n\n<p>In this case, the mass of carbon provided is 3 grams. Since the molar mass of carbon is 12 g\/mol, we divide:<\/p>\n\n\n\n<p>[<br>3 \\text{ g} \\div 12 \\text{ g\/mol} = 0.25 \\text{ moles}<br>]<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. <strong>What This Means<\/strong><\/h4>\n\n\n\n<p>This result tells us that 3 grams of carbon contain <strong>0.25 moles<\/strong> of carbon atoms, which means there are:<\/p>\n\n\n\n<p>[<br>0.25 \\times 6.022 \\times 10^{23} = 1.5055 \\times 10^{23} \\text{ carbon atoms}<br>]<\/p>\n\n\n\n<p>Thus, even a small amount of carbon contains an enormous number of atoms!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The molar mass of carbon is 12 g\/mol. How many moles are there in 3 grams of carbon? The correct answer and explanation is : Answer: The number of moles (( n )) of a substance is calculated using the formula: [n = \\frac{\\text{mass}}{\\text{molar mass}}] Given: [n = \\frac{3 \\text{ g}}{12 \\text{ g\/mol}}] [n = [&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-198925","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/198925","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=198925"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/198925\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=198925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=198925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=198925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}