{"id":39865,"date":"2025-06-27T10:18:00","date_gmt":"2025-06-27T10:18:00","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=39865"},"modified":"2025-06-27T10:18:37","modified_gmt":"2025-06-27T10:18:37","slug":"what-is-the-percent-composition-of-cubr2","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/what-is-the-percent-composition-of-cubr2\/","title":{"rendered":"what is the percent composition of CuBr2"},"content":{"rendered":"\n<p>what is the percent composition of CuBr2?<\/p>\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>Correct Answer:<\/strong><br>The percent composition of CuBr\u2082 is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Copper (Cu): 28.45%<\/strong><\/li>\n\n\n\n<li><strong>Bromine (Br): 71.55%<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Explanation:<\/strong><br>To calculate the percent composition of a compound, determine the molar mass of each element in the compound and then divide the mass of each element by the total molar mass of the compound. Finally, multiply by 100 to get the percentage.<\/p>\n\n\n\n<p>The chemical formula CuBr\u2082 contains:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 atom of copper (Cu)<\/li>\n\n\n\n<li>2 atoms of bromine (Br)<\/li>\n<\/ul>\n\n\n\n<p>Start by finding the atomic masses from the periodic table:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Copper (Cu) = 63.55 g\/mol<\/li>\n\n\n\n<li>Bromine (Br) = 79.90 g\/mol<\/li>\n<\/ul>\n\n\n\n<p>Calculate the total molar mass of CuBr\u2082:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Total molar mass = (1 \u00d7 63.55) + (2 \u00d7 79.90)<\/li>\n\n\n\n<li>Total molar mass = 63.55 + 159.80<\/li>\n\n\n\n<li>Total molar mass = <strong>223.35 g\/mol<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Now calculate the mass percentage of each element:<\/p>\n\n\n\n<p><strong>Copper (Cu):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(63.55 \/ 223.35) \u00d7 100 = <strong>28.45%<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>Bromine (Br):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(159.80 \/ 223.35) \u00d7 100 = <strong>71.55%<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The percent composition gives insight into the ratio of elements in a compound by mass. This information is essential in chemistry for tasks like chemical analysis, preparing reagents, and understanding molecular structure. For example, in this compound, although there are two bromine atoms for every copper atom, the mass percentage shows bromine makes up the majority of the compound&#8217;s weight. This is due to bromine having a higher atomic mass than copper. Understanding percent composition is useful when converting between mass and moles in stoichiometric calculations or when assessing purity in a laboratory setting.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>what is the percent composition of CuBr2? The correct answer and explanation is: Correct Answer:The percent composition of CuBr\u2082 is: Explanation:To calculate the percent composition of a compound, determine the molar mass of each element in the compound and then divide the mass of each element by the total molar mass of the compound. Finally, [&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-39865","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/39865","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=39865"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/39865\/revisions"}],"predecessor-version":[{"id":39866,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/39865\/revisions\/39866"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=39865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=39865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=39865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}