{"id":42659,"date":"2025-06-29T08:02:43","date_gmt":"2025-06-29T08:02:43","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=42659"},"modified":"2025-06-29T08:02:44","modified_gmt":"2025-06-29T08:02:44","slug":"how-many-atoms-are-in-28-9-g-of-potassium-oxide","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/how-many-atoms-are-in-28-9-g-of-potassium-oxide\/","title":{"rendered":"How many atoms are in 28.9 g of potassium oxide"},"content":{"rendered":"\n<p>How many atoms are in 28.9 g of potassium oxide (<br>)? number of atoms:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"164\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-497.png\" alt=\"\" class=\"wp-image-42660\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-497.png 700w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-497-300x70.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\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>Answer:<\/strong>&nbsp;5.54 x 10\u00b2\u00b3 atoms<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<p>To determine the total number of atoms in 28.9 grams of potassium oxide (K\u2082O), we follow a multi-step process that converts mass into the number of individual atoms. This process involves using the molar mass of the compound and Avogadro&#8217;s number.<\/p>\n\n\n\n<p>First, we must calculate the molar mass of potassium oxide (K\u2082O). This is the sum of the atomic masses of all atoms in one molecule of the compound. Using the periodic table, the atomic mass of potassium (K) is approximately 39.10&nbsp;g\/mol&nbsp;, and the atomic mass of oxygen (O) is approximately 16.00&nbsp;g\/mol&nbsp;. Since the formula is K\u2082O, we have two potassium atoms and one oxygen atom. The molar mass is calculated as (2 \u00d7 39.10&nbsp;g\/mol&nbsp;) + (1 \u00d7 16.00&nbsp;g\/mol&nbsp;), which equals 94.20&nbsp;g\/mol&nbsp;.<\/p>\n\n\n\n<p>Next, we convert the given mass of K\u2082O into moles. A mole is a unit that represents a specific quantity of a substance. We can find the number of moles by dividing the given mass by the molar mass:<br>Moles of K\u2082O = 28.9 g \/ 94.20&nbsp;g\/mol&nbsp;\u2248 0.307 moles of K\u2082O.<\/p>\n\n\n\n<p>Now we can determine how many individual formula units (molecules) of K\u2082O are in this sample. We use Avogadro&#8217;s number, which is 6.022 \u00d7 10\u00b2\u00b3, the number of particles (atoms, molecules, etc.) in one mole of a substance.<br>Number of K\u2082O molecules = 0.307 moles \u00d7 (6.022 \u00d7 10\u00b2\u00b3 molecules\/mole) \u2248 1.85 \u00d7 10\u00b2\u00b3 molecules.<\/p>\n\n\n\n<p>Finally, we find the total number of atoms. The chemical formula K\u2082O shows that each molecule contains 2 potassium atoms and 1 oxygen atom, for a total of 3 atoms per molecule. To find the total number of atoms in the sample, we multiply the number of molecules by the number of atoms per molecule:<br>Total atoms = (1.85 \u00d7 10\u00b2\u00b3 molecules) \u00d7 (3 atoms\/molecule) \u2248 5.54 \u00d7 10\u00b2\u00b3 atoms.thumb_upthumb_down<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-350.jpeg\" alt=\"\" class=\"wp-image-42661\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-350.jpeg 1024w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-350-300x300.jpeg 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-350-150x150.jpeg 150w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-350-768x768.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>How many atoms are in 28.9 g of potassium oxide ()? number of atoms: The Correct Answer and Explanation is: Answer:&nbsp;5.54 x 10\u00b2\u00b3 atoms Explanation: To determine the total number of atoms in 28.9 grams of potassium oxide (K\u2082O), we follow a multi-step process that converts mass into the number of individual atoms. This process [&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-42659","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/42659","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=42659"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/42659\/revisions"}],"predecessor-version":[{"id":42662,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/42659\/revisions\/42662"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=42659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=42659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=42659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}