# Chemistry

posted by on .

A student placed 12.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform. A 50.0-ml sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100 ml of the final solution?

• Chemistry - ,

12.0 g/100 mL 0riginal.
Take a 50.0 mL aliquot so now you have 6.0 g in the 50.0 mL. That is diluted to 500 mL so now you have 6.0 g in 500 mL. If you take 100 mL of that solution you will have 1/5 of 6.0 = ??

• Chemistry - ,

12545

• Chemistry - ,

m=12grams
Molar Mass= 180.18
V=.1L

n= m/MM= 0.067 moles.

Molarity= n/V= .067/.1= .67

M1V1=M2V2 => 0.67(.05)=M2(.5)
Solve for M2 and you get .067

M= m/VMM : Molarty= mass/ Volume x Molar Mass
so m= MVMM : mass= Molarity x Volume x Molar Mass

m= .067(.1)(180.18)= 1.21

Just the steps to Dr.Bob's work :)

### Answer This Question

 First Name: School Subject: Answer:

### Related Questions

More Related Questions

Post a New Question
{"found_math": false, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "url": "http://www.jiskha.com/display.cgi?id=1285743255", "fetch_time": 1495927757000000000, "content_mime_type": "text/html", "warc_filename": "crawl-data/CC-MAIN-2017-22/segments/1495463609305.10/warc/CC-MAIN-20170527225634-20170528005634-00050.warc.gz", "warc_record_offset": 663567936, "warc_record_length": 4074, "token_count": 369, "char_count": 1147, "score": 3.765625, "int_score": 4, "crawl": "CC-MAIN-2017-22", "snapshot_type": "latest", "language": "en", "language_score": 0.8954019546508789, "file_path": "/sailhome/yjruan/project/latent-lm/data/processed/finemath-4plus/finemath-4plus/train-00035-of-00064.parquet"}