Calculate the number of grams in 75 mL K2CrO4 (d=1.175 g\/mL, 20% K2CrO4 by mass).<\/p>\n\n\n\n
The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n To calculate the number of grams in 75 mL of a 20% K\u2082CrO\u2084 solution, we can break it down into a few clear steps.<\/p>\n\n\n\n Given that the density (d) of the solution is 1.175 g\/mL, we can find the total mass of the 75 mL solution using the formula: Mass of solution=Density\u00d7Volume\\text{Mass of solution} = \\text{Density} \\times \\text{Volume} Mass of solution=1.175\u2009g\/mL\u00d775\u2009mL\\text{Mass of solution} = 1.175 \\, \\text{g\/mL} \\times 75 \\, \\text{mL} Mass of solution=88.125\u2009g\\text{Mass of solution} = 88.125 \\, \\text{g}<\/p>\n\n\n\n The solution is 20% K\u2082CrO\u2084 by mass. To find the mass of K\u2082CrO\u2084 in the solution, we multiply the total mass of the solution by the percentage (converted to decimal form): Mass of K\u2082CrO\u2084=Mass of solution\u00d7Percentage of K\u2082CrO\u2084\\text{Mass of K\u2082CrO\u2084} = \\text{Mass of solution} \\times \\text{Percentage of K\u2082CrO\u2084} Mass of K\u2082CrO\u2084=88.125\u2009g\u00d70.20\\text{Mass of K\u2082CrO\u2084} = 88.125 \\, \\text{g} \\times 0.20 Mass of K\u2082CrO\u2084=17.625\u2009g\\text{Mass of K\u2082CrO\u2084} = 17.625 \\, \\text{g}<\/p>\n\n\n\n The mass of K\u2082CrO\u2084 in 75 mL of the solution is 17.625 grams<\/strong>.<\/p>\n\n\n\n To summarize, we first used the density of the solution to find the total mass of 75 mL. Then, by using the concentration percentage of K\u2082CrO\u2084 (20% by mass), we calculated the mass of K\u2082CrO\u2084 in the solution. This method is commonly used for solutions where concentration is given by mass percentage.<\/p>\n","protected":false},"excerpt":{"rendered":" Calculate the number of grams in 75 mL K2CrO4 (d=1.175 g\/mL, 20% K2CrO4 by mass). The correct answer and explanation is: To calculate the number of grams in 75 mL of a 20% K\u2082CrO\u2084 solution, we can break it down into a few clear steps. Step 1: Determine the mass of the solution Given that […]<\/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-259131","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259131","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=259131"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259131\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=259131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=259131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=259131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Step 1: Determine the mass of the solution<\/h3>\n\n\n\n
Step 2: Calculate the mass of K\u2082CrO\u2084 in the solution<\/h3>\n\n\n\n
Final Answer:<\/h3>\n\n\n\n
Explanation:<\/h3>\n\n\n\n