100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
CHEM 120 Unit 4 Midterm | Questions and Answers | (Latest Update) | 100% CORRECT SOLUTIONS. $10.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. Chamberlain College Of Nursing
  4.  
  5. CHEM 120

Exam (elaborations)

CHEM 120 Unit 4 Midterm | Questions and Answers | (Latest Update) | 100% CORRECT SOLUTIONS.
 7 views  0 purchase

CHEM 120 Unit 4 Midterm 1. The correct isotope symbol for the isotope containing 1 proton and two neutrons – He 2. Which are the elements with the following electronic configuration: 1s2 2s 2 2p6 3s1 – Sodium 1s2 2s2 2p5- Fluorine 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 – Geremanium (Ge) 3. Provide ...

[Show more]

Preview 2 out of 7  pages

Document information

  • November 11, 2021
  • 7
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers

Subjects

  • the correct isotope symbol for the isotope containing 1 proton and two neutrons – he
  • a gas is enclosed in a 100 l tank at 350 mm hg
  • chem 120 unit 4 midterm questions and answers

Written for

All documents for this subject (464)

Seller

avatar-seller
ProfGoodlucK

Reviews received

Content preview

CHEM 120 Unit 4 Midterm



1. The correct isotope symbol for the isotope containing 1 proton

and two neutrons – He

2. Which are the elements with the following electronic

configuration:

1s2 2s2 2p6 3s1 – Sodium

1s2 2s2 2p5- Fluorine

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 – Geremanium (Ge)

3. Provide 4 examples of substances with ionic bonds


LiF - Lithium Fluoride, LiCl - Lithium Chloride, LiBr – Lithium

Bromide, LiI - Lithium Iodide, Nacl,Calcium Nitrate

5. Name the following:

N2S3 - dinitrogen trisulfide

NaCl – Sodium Choloride

P4O10- Phosphorus pentoxide

NaNO3- Sodium nitrate

Cl2O3- Dichlorine trioxide

6. A gas is enclosed in a 10.0 L tank at 350 mm Hg pressure. If the

gas is pumped into a 23.00 L vessel, what is the new pressure

10.0 L×350 mmHg 10.0 × 350mmHg 3500 mmHg
= =
23.00 L 23.00 23
This study source was downloaded by 100000829957125 from CourseHero.com on 11 -10-2021 22:28:54 GMT -06:00


https://www.coursehero.com/file/79913941/midterm-questions-docx/

, 152.173 mmHG




7. The molarity of a solution that contains 12.5 g of KClO3 in 3.2

liter of solution is

moles of solute
Molarity = ; K- 39.10 + Cl-35.45 + O-
volume of solution

16(3)-48; KClO3= 122.55 g/mol

12.5 g×1 mol 12.5 mol
M= = = 0.102 mol
122.5 g 122.5

0.102mol
= 0.032 M
3.2 L




8. What other compound could also be added in order to make a

buffered solution with each of the following:

H3PO4 - H2PO3

CH3COOH - CH2CO 2-

H2CO3 - HCO 2-

9. Balance: C2H4 + O2 → CO2 + H2O

First take a look at the equation and see how many elements there

are, in this case we have 3 different elements; Carbon, Hydrogen

and Oxygen. To balance the equation start off by balancing the




This study source was downloaded by 100000829957125 from CourseHero.com on 11 -10-2021 22:28:54 GMT -06:00


https://www.coursehero.com/file/79913941/midterm-questions-docx/

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller ProfGoodlucK. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75759 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.99
  • (0)
  Add to cart