{"id":186585,"date":"2025-01-25T09:42:53","date_gmt":"2025-01-25T09:42:53","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=186585"},"modified":"2025-01-25T09:42:55","modified_gmt":"2025-01-25T09:42:55","slug":"the-value-for-the-gas-constant-r-is-1-987-cal-mol","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/25\/the-value-for-the-gas-constant-r-is-1-987-cal-mol\/","title":{"rendered":"The value for the gas constant R is 1.987 cal\/mol"},"content":{"rendered":"\n<p>The value for the gas constant R is 1.987 cal\/mol\u00b7K or 62.37 L\u00b7mmHg\/mol\u00b7K or 0.08314 L\u00b7bar\/mol\u00b7K. The equality 1 atm = 76 cm Hg is an exact equality. Using this given information, determine how many atm corresponds to exactly 1 bar.<\/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>To determine how many atmospheres (atm) correspond to exactly 1 bar, we will first need to utilize the given relationships between units of pressure. Let&#8217;s break it down step by step:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Given Data<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 atm = 76 cm Hg (an exact equality).<\/li>\n\n\n\n<li>1 bar = 100,000 pascals (Pa) (known fact).<\/li>\n\n\n\n<li>1 atm = 101,325 Pa (known fact).<\/li>\n\n\n\n<li>We are also given that 1 atm = 76 cm Hg, and this is key to establishing the relationship between atm and bar.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Convert 1 Bar to Atmospheres<\/strong>:<br>First, let\u2019s express 1 bar in terms of cm Hg, since we know the relationship between atm and cm Hg.<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>From the known relation: 1 atm = 76 cm Hg.<\/li>\n\n\n\n<li>1 bar = 100,000 Pa, and we know that 1 atm is also equal to 101,325 Pa. To convert bar to atm, we first convert bar to pascals, then pascals to atm using the conversion factor. [<br>\\frac{1 \\, \\text{atm}}{101,325 \\, \\text{Pa}} = \\frac{x \\, \\text{atm}}{100,000 \\, \\text{Pa}}<br>] Now, solve for (x), the number of atmospheres in 1 bar: [<br>x = \\frac{100,000 \\, \\text{Pa}}{101,325 \\, \\text{Pa}} \\, \\text{atm}<br>] [<br>x = 0.9869 \\, \\text{atm}<br>] Thus, 1 bar is equivalent to approximately <strong>0.9869 atm<\/strong>.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Conclusion<\/strong>:<br>The value for 1 bar is nearly equal to 1 atm but slightly less. Specifically, 1 bar is about <strong>0.9869 atm<\/strong>. This conversion shows how the two units of pressure relate based on the known physical constants for the atmospheric pressure and the bar measurement.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>The value for the gas constant R is 1.987 cal\/mol\u00b7K or 62.37 L\u00b7mmHg\/mol\u00b7K or 0.08314 L\u00b7bar\/mol\u00b7K. The equality 1 atm = 76 cm Hg is an exact equality. Using this given information, determine how many atm corresponds to exactly 1 bar. The Correct Answer and Explanation is : To determine how many atmospheres (atm) correspond [&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-186585","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186585","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=186585"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186585\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=186585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=186585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=186585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}