ECI Module 15 item analysis .pdf

File information


Original filename: ECI_Module_15_item_analysis.pdf

This PDF 1.4 document has been generated by TeX / pdfTeX-1.40.13, and has been sent on pdf-archive.com on 05/02/2017 at 19:42, from IP address 174.70.x.x. The current document download page has been viewed 299 times.
File size: 37 KB (2 pages).
Privacy: public file


Download original PDF file


ECI_Module_15_item_analysis.pdf (PDF, 37 KB)


Share on social networks



Link to this file download page



Document preview


ECI Module 15 item analysis
Name:
1.

Date:

What is the percent by mass of oxygen in
magnesium oxide, MgO ?
A.

20%

B.

40%

C.

50%

3.

D. 60%

A.

4.

2.

5

B.

2

C.

3

20.%

B.

27%

C.

46%

D. 53%

Base your answer(s) to the following question(s)
on the information below.
Litharge, PbO, is an ore that can be
roasted (heated) in the presence of carbon
monoxide, CO, to produce elemental lead.
The reaction that takes place during this
roasting process is represented by the
balanced equation below.
PbO(s) + CO(g) ! Pb(`) + CO2 (g)

What is the total number of moles of oxygen
atoms present in 1 mole of Mg(ClO3 )2 ?
A.

What is the percent composition by mass of sulfur
in the compound MgSO4 (gram-formula mass =
120. grams per mole)?

D. 6

Calculate the percent composition by mass
of oxygen in litharge (gram-formula mass =
223.2 grams per mole). Your response must
include both a numerical setup and the calculated
result.

page 1

Problem-Attic format version 4.4.284
c 2011–2016 EducAide Software
_
Licensed for use by Seth Johnson
Terms of Use at www.problem-attic.com
ECI Module 15 item analysis
1.
Answer:

B

2.
Answer:

D

3.
Answer:

B

4.

Answer:

16:0g=mol
223:2g=mol

100

02/05/2017


Document preview ECI_Module_15_item_analysis.pdf - page 1/2

Document preview ECI_Module_15_item_analysis.pdf - page 2/2

Related documents


eci module 15 item analysis
module 17 eci items
eci module 16 items
johnson s eciitems mod14
eci problems molesmoleculesatomsgrams
questions for eci module 11

Link to this page


Permanent link

Use the permanent link to the download page to share your document on Facebook, Twitter, LinkedIn, or directly with a contact by e-Mail, Messenger, Whatsapp, Line..

Short link

Use the short link to share your document on Twitter or by text message (SMS)

HTML Code

Copy the following HTML code to share your document on a Website or Blog

QR Code

QR Code link to PDF file ECI_Module_15_item_analysis.pdf