[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-455076-105":59,"doc-detail-455076-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","chemistry-placement-exam-practice-455076","CHEMISTRY PLACEMENT EXAM - Practice","","Chemistry placement exam practice covering foundational topics in significant figures, solution chemistry, atomic/molar calculations, and stoichiometry. Problems include identifying acids from formulas, determining smallest masses with unit conversions, finding molarity after dilution, choosing correct compound formulas, and calculating numbers of atoms or masses from moles. Additional questions address percent composition, algebraic relationships, density from displacement data, balancing chemical equations, and unit conversions, ending with data interpolation from a best-fit line. Includes answer key for self-check.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/chemistry-placement-exam-practice-455076/455076/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/chemistry-placement-exam-practice-455076/455076.png","ImageObject",300,407,{"name":92,"@type":93},"Blitz","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What types of chemistry calculations are included in this placement exam practice?","Question",{"text":112,"@type":113},"It includes significant-figure identification, molarity and dilution, mole-to-mass and mass-to-atoms conversions, percent composition, density from displacement, and stoichiometry from balanced equations.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Does the practice include questions on balancing chemical equations and naming compounds?",{"text":117,"@type":113},"Yes. It asks for coefficients when balancing an equation and for the correct name of a compound (N2O3) using standard chemical nomenclature.",{"name":119,"@type":110,"acceptedAnswer":120},"Is an answer key provided for checking results?",{"text":121,"@type":113},"Yes. The document lists the selected answers for questions 1 through 25.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},455076,1790766029,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},24464137899374,"https://us-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","PRACTICE CHEMISTRY PLACEMENT EXAM  \n1. How many of the numbers below have 5 significant figures?  \n0.0054 19.000 0.00006 1.6090 × 108 13607  \na) 1  \nb) 2  \nc) 3  \nd) 4  \ne) 5  \n2. Nitric acid is a solution of which of the following dissolved in water?  \na) HNO4  \nb) H2NO3  \nc) HNO2  \nd) HNO3  \ne) H2NO  \n3. Which of the following is the smallest mass?  \na) 2.1 kg  \nb) 4.2 x 1010 ng  \nc) 5.8 x 102 g  \nd) 8.4 x 104 cg  \ne) 6.7 x 104 mg  \n4. If 250 mL of a 0.50 M NaCl solution is diluted to 840 mL, what is the molarity of the resulting solution?  \na) 0.15 Mb) 6.7 Mc) 0.60 Md) 1.7 Me) 0.0025 M  \n5. Iron(III) sulfite has the formula  \na) Fe 3SO3 b) Fe2(SO4)3 c) Fe 2(SO 3)3 d) Fe2SO4 e) Fe 2SO3  \n6. How many atoms of carbon are in 24 grams of carbon?  \na) 1.2 x 1024 atoms  \nb) 1.7 x 1026 atoms  \nc) 1.2 x 1025 atoms  \nd) 3.0 x 1024 atoms  \ne) 3.0 x 1023 atoms  \n7. A solution is prepared by dissolving sugar in water. The solution is 25.0%, by mass, sugar. How many grams of WATER are in 472 grams of this solution?  \na) 118 g  \nb) 157 g  \nc) 408 g  \nd) 354 g  \ne) 396 g  \n8. The balanced chemical equation for the reaction between PCl5 and water is given below. If 3.45 moles of HCl are produced, how many moles of water reacted?  \nPCl5 + 4 H2O • H3PO4 + 5 HCl  \na) 0.690 mol  \nb) 0.863 mol  \nc) 2.76 mol  \nd) 3.45 mol  \ne) 4.31 mol  \n9. How many grams of calcium bromide are in 50.0 mL of a 0.25 M calcium bromide solution?  \na) 2.5 g  \nb) 1.5 g  \nc) 1.3 x 10-2 g  \nd) 24 g  \ne) 40. g  \n10. 26.0 g of a liquid that has a density of 1.44 g/mL needs to be measured out in a graduated cylinder. What volume should be used?  \na) 37.4 mL  \nb) 0.0554 mL  \nc) 18.1 mL  \nd) 0.0267 mL  \ne) 26.0 mL  \n11. One gram of alum, KAl(SO4)2. 12H2O, contains 1.3 × 1021 Al atoms. How many oxygen atoms are contained in 1.0 g alum?  \na) 1.3 x 1021 atoms  \nb) 2.6 x 1022 atoms  \nc) 1.6 x 1022 atoms  \nd) 1.0 x 1022 atoms  \ne) 2.1 x 1022 atoms  \n12. How many grams of AlF 3 are in 2.64 moles of AlF 3?  \na) 3.14 x 10-2 g  \nb) 121 g  \nc) 222 g  \nd) 5.74 x 10-2 g  \ne) 31.8 g  \n13. The balanced chemical equation for the reaction between PCl5 and water is given below. If 12.0 g of PCl5 reacts completely with water, how many grams of HCl will be produced?  \nPCl5 + 4 H2O • H3PO4 + 5 HCl  \na) 60.0 g  \nb) 2.10 g  \nc) 0.420 g  \nd) 0.0952 g  \ne) 10.5 g  \n14. Which of the following would be the correct name for N2O3?  \na) dinitrogen trioxide  \nb) nitrogen(II) oxide  \nc) nitrogen(III) oxide  \nd) nitrogen oxide  \ne) nitrogen(II) oxygen(III)  \n15. How many moles ofC4F8 are in 265 grams ofC4F8?  \na) 8.55 mol  \nb) 1.89 x 10-5 mol  \nc) 5.30 x 104 mol  \nd) 1.32 mol  \ne) 0.755 mol  \n16. What is the percent, by mass, of oxygen in Zn(BrO3)2?  \na) 24.83%  \nb) 39.00%  \nc) 29.89%  \nd) 39.79%  \ne) 17.57%  \n17. Given: Z = 0.43Y + 12 ; What is Y when Z = 28 ?  \na) 93  \nb) 6.9  \nc) 24  \nd) 17  \ne) 37  \n18. A metal having a mass of 44 grams is dropped in 118.2 cm3 of water and sinks to the bottom. The volume of the water and object is 124.3 cm3. What is the density of the metal?  \na) 0.37 g/cm3  \nb) 7.2 g/cm3  \nc) 0.35 g/cm3  \nd) 2.7 g/cm3  \ne) 2.9 g/cm3  \n19. When the equation below is properly balanced, what is the coefficient for S8?  \nCr + S8 • Cr2S3  \na) 1  \nb) 2  \nc) 3  \nd) 4  \ne) none of these  \n20. An antacid tablet containing 0.50 g of NaHCO3 is dissolved in 250 mL of water. What is the molar concentration of NaHCO3 in the solution?  \na) 0.024 M  \nb) 4.1 M  \nc) 0.0020 M  \nd) 0.0060 M  \ne) 2.0 M  \n21. What is the formula of the compound formed between the potassium ion and the sulfide ion?  \na) KSb) KS2 c) K2S3 d) KS3 e) K2S  \n22. How many mL of 0.250 M H2SO4 is required to completely react with 25.0 mL of 1.50 M NaOH?  \nH2SO4 + 2 NaOH → Na2SO4 + 2 H2O  \na) 150. mL  \nb) 50.0 mL  \nc) 300. mL  \nd) 75.0 mL  \ne) none of the above  \n23. Assume that you are a physician administering a drug in a solution containing 5.0 mg drug/L solution. If the recommended dosage of the drug is 3.5 × 10-6 g per kilogram ","cbCaifqtIuRYhdCT","https://ap.wps.com/l/cbCaifqtIuRYhdCT","pdf",80995,"English","# Practice Problems\n## Questions 1-25\n### Answers","[{\"question\":\"What types of chemistry calculations are included in this placement exam practice?\",\"answer\":\"It includes significant-figure identification, molarity and dilution, mole-to-mass and mass-to-atoms conversions, percent composition, density from displacement, and stoichiometry from balanced equations.\"},{\"question\":\"Does the practice include questions on balancing chemical equations and naming compounds?\",\"answer\":\"Yes. It asks for coefficients when balancing an equation and for the correct name of a compound (N2O3) using standard chemical nomenclature.\"},{\"question\":\"Is an answer key provided for checking results?\",\"answer\":\"Yes. The document lists the selected answers for questions 1 through 25.\"}]","CHEMISTRY PLACEMENT EXAM - Practice | PDF",1790742065,15]