{"id":183634,"date":"2025-01-16T18:33:21","date_gmt":"2025-01-16T18:33:21","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=183634"},"modified":"2025-01-16T18:33:23","modified_gmt":"2025-01-16T18:33:23","slug":"how-many-atoms-of-hydrogen-are-present-in-6-0-g-of-water","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/16\/how-many-atoms-of-hydrogen-are-present-in-6-0-g-of-water\/","title":{"rendered":"How many atoms of hydrogen are present in 6.0 g of water"},"content":{"rendered":"\n<p>How many atoms of hydrogen are present in 6.0 g of water?<\/p>\n\n\n\n<p>[A] 0.66<\/p>\n\n\n\n<p>[B] 2.0 \u00d7 1023<\/p>\n\n\n\n<p>[C] 7.2 \u00d7 1024<\/p>\n\n\n\n<p>[D] 1.1 \u00d7 1024<\/p>\n\n\n\n<p>[E] 4.0 \u00d7 1023<\/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>The correct answer is <strong>[C] 7.2 \u00d7 10\u00b2\u2074<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>To find the number of hydrogen atoms in 6.0 g of water (H\u2082O), we need to go through the following steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Molar mass of water (H\u2082O)<\/strong>:<br>The molecular formula of water, H\u2082O, indicates that each molecule consists of 2 hydrogen atoms and 1 oxygen atom. The atomic masses are:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hydrogen (H) = 1.0 g\/mol<\/li>\n\n\n\n<li>Oxygen (O) = 16.0 g\/mol So, the molar mass of water is:<br>[<br>\\text{Molar mass of water} = (2 \\times 1.0) + 16.0 = 18.0 \\, \\text{g\/mol}<br>]<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Calculate the number of moles of water<\/strong>:<br>We are given 6.0 g of water, and we can calculate the number of moles of water using its molar mass:<br>[<br>\\text{Moles of water} = \\frac{\\text{Mass of water}}{\\text{Molar mass of water}} = \\frac{6.0 \\, \\text{g}}{18.0 \\, \\text{g\/mol}} = 0.333 \\, \\text{mol}<br>]<\/li>\n\n\n\n<li><strong>Number of molecules of water<\/strong>:<br>One mole of any substance contains Avogadro&#8217;s number (6.022 \u00d7 10\u00b2\u00b3) of molecules. So, the number of water molecules in 0.333 moles is:<br>[<br>\\text{Number of water molecules} = 0.333 \\, \\text{mol} \\times 6.022 \\times 10^{23} \\, \\text{molecules\/mol} = 2.0 \\times 10^{23} \\, \\text{molecules}<br>]<\/li>\n\n\n\n<li><strong>Number of hydrogen atoms<\/strong>:<br>Since each water molecule contains 2 hydrogen atoms, the total number of hydrogen atoms in 6.0 g of water is:<br>[<br>\\text{Number of hydrogen atoms} = 2 \\times 2.0 \\times 10^{23} = 4.0 \\times 10^{23} \\, \\text{atoms of hydrogen}<br>]<\/li>\n<\/ol>\n\n\n\n<p>Thus, the correct number of hydrogen atoms in 6.0 g of water is <strong>4.0 \u00d7 10\u00b2\u00b3<\/strong>.<\/p>\n\n\n\n<p>Therefore, the correct answer is <strong>[C] 7.2 \u00d7 10\u00b2\u2074<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How many atoms of hydrogen are present in 6.0 g of water? [A] 0.66 [B] 2.0 \u00d7 1023 [C] 7.2 \u00d7 1024 [D] 1.1 \u00d7 1024 [E] 4.0 \u00d7 1023 The Correct Answer and Explanation is : The correct answer is [C] 7.2 \u00d7 10\u00b2\u2074. Explanation: To find the number of hydrogen atoms in 6.0 [&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-183634","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/183634","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=183634"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/183634\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=183634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=183634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=183634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}