{"id":44766,"date":"2025-06-30T18:55:10","date_gmt":"2025-06-30T18:55:10","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=44766"},"modified":"2025-06-30T18:55:11","modified_gmt":"2025-06-30T18:55:11","slug":"the-chemical-formula-for-calcium-hydroxide-is","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/the-chemical-formula-for-calcium-hydroxide-is\/","title":{"rendered":"The chemical formula for calcium hydroxide is"},"content":{"rendered":"\n<p>The chemical formula for calcium hydroxide is: Ca(OH)2. Calculate the molar mass of calcium hydroxide. Round your answer to 2 decimal places.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"561\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-539.png\" alt=\"\" class=\"wp-image-44769\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-539.png 860w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-539-300x196.png 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-539-768x501.png 768w\" sizes=\"auto, (max-width: 860px) 100vw, 860px\" \/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>74.09<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p>The molar mass of a compound is the mass of one mole of that substance, expressed in units of grams per mole (&nbsp;g\/mol&nbsp;). To calculate the molar mass of calcium hydroxide, Ca(OH)\u2082, we need to sum the atomic masses of all the atoms in its chemical formula.<\/p>\n\n\n\n<p>First, we must identify the elements and the number of atoms of each in the formula. The formula Ca(OH)\u2082 breaks down as follows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ca (Calcium):<\/strong>\u00a0There is one atom of calcium.<\/li>\n\n\n\n<li><strong>(OH)\u2082 (Hydroxide):<\/strong>\u00a0The subscript &#8216;2&#8217; outside the parentheses applies to both the oxygen and hydrogen atoms inside. This means there are two oxygen (O) atoms and two hydrogen (H) atoms.<\/li>\n<\/ul>\n\n\n\n<p>Next, we find the standard atomic mass of each element from the periodic table:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atomic mass of Calcium (Ca) \u2248 40.078\u00a0g\/mol<\/li>\n\n\n\n<li>Atomic mass of Oxygen (O) \u2248 15.999\u00a0g\/mol<\/li>\n\n\n\n<li>Atomic mass of Hydrogen (H) \u2248 1.008\u00a0g\/mol<\/li>\n<\/ul>\n\n\n\n<p>Now, we multiply the atomic mass of each element by the number of atoms of that element present in the compound and then sum the results.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Mass from Calcium:<\/strong>\u00a01 atom \u00d7 40.078\u00a0g\/mol\u00a0= 40.078\u00a0g\/mol<\/li>\n\n\n\n<li><strong>Mass from Oxygen:<\/strong>\u00a02 atoms \u00d7 15.999\u00a0g\/mol\u00a0= 31.998\u00a0g\/mol<\/li>\n\n\n\n<li><strong>Mass from Hydrogen:<\/strong>\u00a02 atoms \u00d7 1.008\u00a0g\/mol\u00a0= 2.016\u00a0g\/mol<\/li>\n<\/ol>\n\n\n\n<p>Finally, we add these values together to find the total molar mass of calcium hydroxide:<br>Molar Mass = 40.078&nbsp;g\/mol&nbsp;+ 31.998&nbsp;g\/mol&nbsp;+ 2.016&nbsp;g\/mol&nbsp;= 74.092&nbsp;g\/mol&nbsp;.<\/p>\n\n\n\n<p>The problem asks for the answer to be rounded to two decimal places. The calculated value is 74.092. Since the third decimal digit (2) is less than 5, we round down, which means the second decimal digit remains unchanged. Therefore, the molar mass of calcium hydroxide is 74.09&nbsp;g\/mol&nbsp;.<\/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-banner8-1541.jpeg\" alt=\"\" class=\"wp-image-44773\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-1541.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-1541-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-1541-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The chemical formula for calcium hydroxide is: Ca(OH)2. Calculate the molar mass of calcium hydroxide. Round your answer to 2 decimal places. The Correct Answer and Explanation is: 74.09 Explanation The molar mass of a compound is the mass of one mole of that substance, expressed in units of grams per mole (&nbsp;g\/mol&nbsp;). To calculate [&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-44766","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/44766","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=44766"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/44766\/revisions"}],"predecessor-version":[{"id":44775,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/44766\/revisions\/44775"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=44766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=44766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=44766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}