[amp_mcq option1=”30%” option2=”25%” option3=”47%” option4=”60%” correct=”option3″]<\/p>\n
The correct answer is C. 47%.<\/p>\n
Urea is a chemical compound with the formula CO(NH2)2. It is a white, odorless solid that is produced in the liver from ammonia and carbon dioxide. Urea is the main component of urine and is also used in fertilizers and other industrial applications.<\/p>\n
The percentage of nitrogen in urea can be calculated by the following equation:<\/p>\n
%N = (N\/M) x 100<\/p>\n
where N is the mass of nitrogen in the compound and M is the molar mass of the compound.<\/p>\n
The molar mass of urea is 60.06 g\/mol. The mass of nitrogen in urea is 28.02 g\/mol. Therefore, the percentage of nitrogen in urea is:<\/p>\n
%N = (28.02\/60.06) x 100 = 47%<\/p>\n
Option A is incorrect because it is the percentage of oxygen in urea. Option B is incorrect because it is the percentage of carbon in urea. Option D is incorrect because it is the percentage of hydrogen in urea.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”30%” option2=”25%” option3=”47%” option4=”60%” correct=”option3″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[638],"tags":[],"class_list":["post-5486","post","type-post","status-publish","format-standard","hentry","category-chemistry-in-everyday-life","no-featured-image-padding"],"yoast_head":"\n