Q&A: Is it typically safe to apply heat to a vacuum filtration flask, with only the sidearm left open?

Question by Chem Kid: Is it typically safe to apply heat to a vacuum filtration flask, with only the sidearm left open?

I am considering distilling some 70% (mass) store-bought ethanol with a somewhat makeshift apparatus. The top is stoppered with a rubber stopper, and the sidearm is connected to some tubing which runs down a chilled receiving flask. I’d like to make sure that there isn’t some obvious flaw that I’m overlooking.

Best answer:

Answer by Caligula
yeah it should work
maybe the rubber will get attacked by the ethanol vapors over time
maybe the tubing too depending on its material

but if you manage to get a vacuum filtration flask, why cant you get a proper laboratory condenser

What do you think? Answer below!

Is it bad if I left my ipod charging overnight on accident?

Question by Jessica: Is it bad if I left my ipod charging overnight on accident?

Like is anything gonna happen to it? Damage it in any way? Man I feel stupid.

Best answer:

Answer by heyhey
no its not great for it but it should be fine http://www.youtube.com/watch?v=lgAIfxdTkbU

What do you think? Answer below!

Economics Homework Help PLEASE! only 25 minutes left to turn in!?

Question by Zebraa: Economics Homework Help PLEASE! only 25 minutes left to turn in!?

So I’m a senior and my graduation pretty much depends on this assignment I have a 59% in the class and my teacher hates me and wont except anything else other then the last two assignments so unless I get and A on this I will be failing economics please help! I really just need help checking the answers i have most of them done. Thanks!

1. Which of these is a procedure that quantifies the personal value of a purchase?
(Points: 2)
The usefulness of the item is turned into utility.

The purchase price is calculated as a certain number of working hours.

The production costs of the item are calculated.

The costs and benefits of the item are determined.

2. Why should consumers look for products that have a warranty?
(Points: 2)
It keeps the store from charging a restocking fee.

It guarantees that they can return the product for any reason.

It provides them with an incentive to choose the best product.

It protects them in case the product is defective.

4. Which of these is not a primary concern of socially responsible consumers?
(Points: 2)
Price

Sustainability

Labor practices

Environmental damage

5. Which of these production practices promotes sustainable development?
(Points: 2)
An assembly line

Offshoring production

The use of renewable resources

Bidding for government contracts

6. Which of these is a way that businesses can be socially responsible?
(Points: 2)
By boycotting protective tariffs

By minimizing pollution from production

By charging the lowest prices possible

By preventing immigrants from getting jobs

7. How can the news media help protect consumers?
(Points: 2)
By issuing a recall on an unsafe product

By helping consumers organize boycotts

By giving consumers advice on how to make a personal budget

By investigating and exposing bad products and business practices

8. Small-claims court is a place for which of the following?
(Points: 2)
People to resolve financial differences

Warrantees to be redeemed

The government to punish cartels

Customers to return damaged goods

9. What is one sacrifice that boycotters often have to make?
(Points: 2)
They pay higher prices.

They lose their jobs.

They suffer from brain drain.

They have reduced Internet access.

10. Why can consumers have influence over politicians?
(Points: 2)
Consumers are able to boycott politicians’ re-election campaigns.

Corporations use profits from consumers to lobby the government.

Politicians rely on the votes of consumers to keep them in office.

Government agencies are required to address consumer complaints.
Okay I take an online class, and yeah my teacher hates me he is also my government teacher and he already failed me and that class and didn’t give me a chance. Yes I took notes but my school system sucks and doesnt even go by what we read and I’m not the preppy girl in class and I never have been, I already answered all these I was just hoping someone would be kind enought to answer them again so I could check my answers before I turn it it.
Thanks to the person who answered 🙂

Best answer:

Answer by Pooks
did you even attend class, take notes ?that sort of thing?some of these questions just take a little “student sense”.

Know better? Leave your own answer in the comments!