{"id":25614,"date":"2025-06-19T05:43:46","date_gmt":"2025-06-19T05:43:46","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=25614"},"modified":"2025-06-19T05:43:48","modified_gmt":"2025-06-19T05:43:48","slug":"a-water-molecule-is-made-up-of-one-oxygen-atom-and-two-hydrogen-atoms","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/a-water-molecule-is-made-up-of-one-oxygen-atom-and-two-hydrogen-atoms\/","title":{"rendered":"A water molecule is made up of one oxygen atom and two hydrogen atoms."},"content":{"rendered":"\n<p>A water molecule is made up of one oxygen atom and two hydrogen atoms. What is the mass of one mole of water? How many atoms of oxygen and hydrogen are there in one mole of water?<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-light-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Correct Answer:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Mass of one mole of water (H\u2082O)<\/strong>:<br>The molar mass of water is <strong>18 grams per mole<\/strong>.<\/li>\n\n\n\n<li><strong>Number of atoms in one mole of water<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>Oxygen atoms<\/strong>: 1 mole of water contains <strong>1 mole of oxygen atoms<\/strong>, which is <strong>6.022 \u00d7 10\u00b2\u00b3 atoms<\/strong>.<\/li>\n\n\n\n<li><strong>Hydrogen atoms<\/strong>: 1 mole of water contains <strong>2 moles of hydrogen atoms<\/strong>, which is <strong>2 \u00d7 6.022 \u00d7 10\u00b2\u00b3 = 1.204 \u00d7 10\u00b2\u2074 atoms<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\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>A single water molecule is composed of two hydrogen atoms and one oxygen atom. Chemically, it is represented as H\u2082O. To find the mass of one mole of water, we need to calculate its <strong>molar mass<\/strong> by summing the atomic masses of hydrogen and oxygen.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The atomic mass of <strong>hydrogen (H)<\/strong> is approximately 1 gram per mole.<\/li>\n\n\n\n<li>The atomic mass of <strong>oxygen (O)<\/strong> is approximately 16 grams per mole.<\/li>\n<\/ul>\n\n\n\n<p>Since water has <strong>two hydrogen atoms<\/strong> and <strong>one oxygen atom<\/strong>, the molar mass of water is:<\/p>\n\n\n\n<p>2(1) + 16 = <strong>18 grams per mole<\/strong><\/p>\n\n\n\n<p>This means one mole of water weighs 18 grams.<\/p>\n\n\n\n<p>Now, using <strong>Avogadro\u2019s number<\/strong>, which is <strong>6.022 \u00d7 10\u00b2\u00b3<\/strong>, we can determine how many individual atoms are in one mole of water molecules.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Each water molecule has <strong>1 oxygen atom<\/strong>, so one mole of water contains <strong>6.022 \u00d7 10\u00b2\u00b3 oxygen atoms<\/strong>.<\/li>\n\n\n\n<li>Each water molecule also has <strong>2 hydrogen atoms<\/strong>, so one mole of water contains <strong>2 \u00d7 6.022 \u00d7 10\u00b2\u00b3 = 1.204 \u00d7 10\u00b2\u2074 hydrogen atoms<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>This calculation helps us understand the massive scale of particles even in small amounts of substances. Despite being only 18 grams, a mole of water contains over <strong>10\u00b2\u2074 atoms<\/strong>, which shows the atomic world operates on a scale that is very different from what we see in everyday life.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-69.jpeg\" alt=\"\" class=\"wp-image-25615\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-69.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-69-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-69-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A water molecule is made up of one oxygen atom and two hydrogen atoms. What is the mass of one mole of water? How many atoms of oxygen and hydrogen are there in one mole of water? The Correct Answer and Explanation is: Correct Answer: Explanation: A single water molecule is composed of two hydrogen [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-25614","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=25614"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25614\/revisions"}],"predecessor-version":[{"id":25616,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25614\/revisions\/25616"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=25614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=25614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=25614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}