{"id":23771,"date":"2024-04-15T06:38:01","date_gmt":"2024-04-15T06:38:01","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=23771"},"modified":"2024-04-15T06:38:01","modified_gmt":"2024-04-15T06:38:01","slug":"the-molecular-mass-of-a-gas-is-a-twice-its-vapour-pressure-b-equal-to-its-vapour-pressure-c-half-its-vapour-pressure-d-not-related-to-its-vapour-pressure","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-molecular-mass-of-a-gas-is-a-twice-its-vapour-pressure-b-equal-to-its-vapour-pressure-c-half-its-vapour-pressure-d-not-related-to-its-vapour-pressure\/","title":{"rendered":"The molecular mass of a gas is A. Twice its vapour pressure B. Equal to its vapour pressure C. Half its vapour pressure D. Not related to its vapour pressure"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9e2e9869e2a\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Twice its vapour pressure                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Equal to its vapour pressure                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Half its vapour pressure                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"true\">\r\n                    Not related to its vapour pressure                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is D. The molecular mass of a gas is not related to its vapour pressure.<\/p>\n<p>Vapour pressure is the pressure exerted by a vapor in equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> a given temperature in a closed system. The equilibrium vapor pressure is a function of temperature, and it increases with increasing temperature.<\/p>\n<p>The molecular mass of a gas is the mass of one mole of the gas. It is calculated by multiplying the atomic mass of each element in the gas by the number of atoms of that element in the molecule, and then adding the products together.<\/p>\n<p>The molecular mass of a gas does not affect its vapour pressure. The vapour pressure of a gas is determined by the temperature and the intermolecular forces between the molecules of the gas.<\/p>\n<p>The following is a brief explanation of each option:<\/p>\n<ul>\n<li>Option A: Twice its vapour pressure. This is incorrect because the molecular mass of a gas is not related to its vapour pressure.<\/li>\n<li>Option B: Equal to its vapour pressure. This is incorrect because the molecular mass of a gas is not related to its vapour pressure.<\/li>\n<li>Option C: Half <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> its vapour pressure. This is incorrect because the molecular mass of a gas is not related to its vapour pressure.<\/li>\n<li>Option D: Not related to its vapour pressure. This is the correct answer because the molecular mass of a gas is not related to its vapour pressure.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The molecular mass of a gas is A. Twice its vapour pressure B. Equal to its vapour pressure C. Half its vapour pressure D. 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