Search found 25 matches

March 21st, 2019, 4:13 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

ok so rip thread Anywho, i'll try to revive this: 1. A sample of Hydrogen has is in a 5-liter tank with a pressure of 296 torrs. There is another sample of Hydrogen gas that's in a 8-liter tank with a pressure of 530 torrs. What will the pressure be if these two samples are combined into one 13 lite...
February 19th, 2019, 4:26 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

Bob again, I hope I'm not annoying anyone here for asking a lot of questions. Anyways, here's a question: A hot air balloon with a volume of 500 m3 weighing 50 kg needs to lift a driver weighing 62 kg and three passengers each weighing 60 kg. Outside air is at 25o C with a density of 1.18 kg / m3. W...
January 22nd, 2019, 7:56 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

Hey there, its Bob.

How do I find the maximum possible payload of a balloon filled with any gas in terms of newtons?
How do I find the number of grams in a tank of gas? Assuming STP

Thanks,
A confused Bob
January 8th, 2019, 8:22 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

Hey there, its Bob, Sorry about the lack of info for number 1. Also, what do you mean by the "volumetric temperature expansion coefficient"? Thanks, Bob The volumetric temperature expansion coefficient determines how much an object expands when it is heated. I assume the inverse is true when cooled...
January 8th, 2019, 7:56 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

Hey there, its Bob,

Sorry about the lack of info for number 1.
Also, what do you mean by the "volumetric temperature expansion coefficient"?

Thanks,
Bob
December 26th, 2018, 10:56 am
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 2982

Configurations of the Boomilever

Hey SciOly Forums,

I know we're allowed to do this, ,

but I was wondering whether we were allowed to do this:

as an upside down triangle instead of a regular one.

Thanks,
Bob
December 12th, 2018, 3:37 pm
Forum: General Competition
Topic: How do you format your 1-page event pages on GOOGLE DOCS
Replies: 23
Views: 1736

Re: How do you format your 1-page event pages on GOOGLE DOCS

December 12th, 2018, 3:32 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

1. What is the density of each liquid in the jar that: - has a volume 10 L - contains equal amounts of Liquid A and Liquid B - Liquid A weighs 60 grams 2. What is the density of water at 0 degrees C? -50 degrees C? 100 degrees C? 3. What is the population density of country A if it has 545,000 peopl...
December 10th, 2018, 3:52 pm
Forum: 2019 Question Marathons
Topic: Density Lab B
Replies: 34
Views: 4226

Re: Density Lab B

lets restart this Questions|1. What is the molarity when 0.75 mol is dissolved in 2.50 L of solution? 2. What is the concentration in ppm of selenium if 1.3 milligrams is found in 2500 kg of soil? 3. Calculate the concentration of salt in a solution of water in percent if 45 grams is dissolved in 1...
October 29th, 2018, 3:58 pm
Forum: 2019 Lab Events
Topic: Density Lab B
Replies: 116
Views: 17688

Re: Density Lab B

What is 1 mol of gas at STP equal too?

The wiki says that its 22.71 L. https://scioly.org/wiki/index.php/Densi ... ro.27s_Law
Simply looking it up, says its 22.4 L.

Which do I believe?

Thanks,
Bob