This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: You open your laboratory drawer to prepare your glassware for an experiment. You find that your ... (Read 51 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
on: Aug 23, 2018

You open your laboratory drawer to prepare your glassware for an experiment. You find that
  your round-bottom flask is attached so firmly to your distillation adapter that you cannot take
  them apart.
  (a) What should you have done when storing your glassware during the previous lab period?
  (b) How can you get the two pieces of glassware apart?



Question 2

Many student laboratories employ heating mantles for heating reaction mixtures. These
  devices should not be plugged directly into the electrical outlet. Why?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Aug 23, 2018
Answer to Question 1

(a) Taken it apart.
(b) Hot water, a gentle rap on the bench top.



Answer to Question 2

Heating mantles are not designed to operate at 110 volts. Instead, the mantle is plugged into a
variable transformer which is used to adjust the voltage and thus the temperature.
(a) CH3CO2H + NaOH
(b) H2NCH2CH2CH2NH2 + HCl (12 M)
CH
3CO2Na + H2O
ClH
3NCH2CH2CH2NH3Cl
+ +
25.0 g 10.0 g
5.0 g 10.0 mL
14 You open your laboratory drawer to prepare your glassware for an experiment. You find tha



Yolanda

  • Member
  • Posts: 757
Reply 2 on: Aug 23, 2018
Excellent

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Staff members often find it difficult to communicate with other coworkers. Staff members often find it difficult to communicate with other coworkers.
A combination wrench has an open end at one end and a box end at the other end. A combination wrench has an open end at one end and a box end at the other end.
How to find the X and Y components of any vector How to find the X and Y components of any vector
How to use the quotient rule to find the derivative of a function How to use the quotient rule to find the derivative of a function
Open pit mining creates immense holes at the surface Open pit mining creates immense holes at the surface
The Taylor–Woods–Hughes experiment The Taylor–Woods–Hughes experiment
Video: Origin of organelles Animation

For a complete list of videos, visit our video library