{"id":180603,"date":"2025-01-07T17:55:36","date_gmt":"2025-01-07T17:55:36","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=180603"},"modified":"2025-01-07T17:55:39","modified_gmt":"2025-01-07T17:55:39","slug":"a-website-updated-daily-could-be-considered","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/07\/a-website-updated-daily-could-be-considered\/","title":{"rendered":"A website updated daily could be considered"},"content":{"rendered":"\n<p>A website updated daily could be considered<\/p>\n\n\n\n<p>Authoritative<\/p>\n\n\n\n<p>Objective<\/p>\n\n\n\n<p>Accurate<\/p>\n\n\n\n<p>Timely<\/p>\n\n\n\n<p>What is the predicted product from the following combination reaction? CA (s) + O2 (g)<\/p>\n\n\n\n<p>a. Cano<\/p>\n\n\n\n<p>b. Ca2O3<\/p>\n\n\n\n<p>c. CaO2<\/p>\n\n\n\n<p>d. Ca3O2<\/p>\n\n\n\n<p>e. Ca2O<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Website Question:<\/h3>\n\n\n\n<p>A website updated daily could be considered <strong>Timely<\/strong>, as it regularly provides current and up-to-date information.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Chemistry Question:<\/h3>\n\n\n\n<p>The predicted product from the combination reaction between calcium (Ca) and oxygen (O\u2082) is:<br><strong>e. CaO<\/strong><\/p>\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><strong>1. Understanding the Reactants:<\/strong><br>Calcium (Ca) is an alkaline earth metal that is highly reactive, particularly with oxygen. When exposed to oxygen, calcium reacts to form an ionic compound. Oxygen (O\u2082) is a diatomic molecule that tends to gain electrons to achieve a stable electron configuration.<\/p>\n\n\n\n<p><strong>2. Type of Reaction:<\/strong><br>This is a <strong>combination reaction<\/strong> where two reactants combine to form a single product. The general form of a combination reaction is:<br>A+B\u2192ABA + B \\rightarrow AB<\/p>\n\n\n\n<p>In this case, calcium (Ca) reacts with oxygen (O\u2082):<br>2Ca&nbsp;(s)+O2(g)\u21922CaO&nbsp;(s)2 \\text{Ca (s)} + \\text{O}_2 \\text{(g)} \\rightarrow 2 \\text{CaO (s)}<\/p>\n\n\n\n<p><strong>3. Product Formation:<\/strong><br>Calcium forms a <strong>+2 charge (Ca\u00b2\u207a)<\/strong> as it loses two electrons to achieve a stable noble gas configuration. Oxygen forms a <strong>-2 charge (O\u00b2\u207b)<\/strong> by gaining two electrons. These ions combine in a 1:1 ratio to produce calcium oxide (CaO), which is a neutral compound.<\/p>\n\n\n\n<p><strong>4. Incorrect Options:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>a. CaNO:<\/strong> This is not a valid compound for this reaction.<\/li>\n\n\n\n<li><strong>b. Ca\u2082O\u2083:<\/strong> This compound does not exist under normal conditions.<\/li>\n\n\n\n<li><strong>c. CaO\u2082:<\/strong> Calcium peroxide forms only under specific conditions, not in a simple reaction with oxygen.<\/li>\n\n\n\n<li><strong>d. Ca\u2083O\u2082:<\/strong> This is not a stable or recognized compound.<\/li>\n<\/ul>\n\n\n\n<p><strong>5. Properties of Calcium Oxide (CaO):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Known as quicklime or burnt lime.<\/li>\n\n\n\n<li>A white, crystalline solid used in construction (e.g., making cement).<\/li>\n\n\n\n<li>Reacts with water to form calcium hydroxide (slaked lime), releasing heat.<\/li>\n<\/ul>\n\n\n\n<p>This reaction exemplifies how alkaline earth metals interact with oxygen to form stable oxides.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A website updated daily could be considered Authoritative Objective Accurate Timely What is the predicted product from the following combination reaction? CA (s) + O2 (g) a. Cano b. Ca2O3 c. CaO2 d. Ca3O2 e. Ca2O The correct answer and explanation is: Website Question: A website updated daily could be considered Timely, as it regularly [&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-180603","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180603","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=180603"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180603\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=180603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=180603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=180603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}