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Chemistry
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- 2Upvotes of all answers to this question
is it normal to spontainosly combust asking for a friend?
Favourite answer:Yep, best not to have any friends, they're too dangerous.
5 Answers2 weeks ago - 9Upvotes of all answers to this question
am i gay or am i just uglt?
8 Answers2 weeks ago - 6Upvotes of all answers to this question
How do you make fuel out of water? ?
7 Answers3 weeks ago - 23Upvotes of all answers to this question
Options other than Yahoo Answers?
I see that Yahoo is shutting down Yahoo!answers at the beginning of May. For those of you who answer questions here, what are other options for asking and answering questions like this? I've actually enjoyed spending time here and helping people deal with Chemistry questions. Where else can I do something similar?
9 Answers3 weeks ago - 10Upvotes of all answers to this question
is there a way to melt sand using a oven?
Yes or no without it being a fire hazard possible yes no
6 Answers3 weeks ago - 7Upvotes of all answers to this question
Is it possible to blow up a balloon while you’re under water?
5 Answers3 weeks ago - 20Upvotes of all answers to this question
Can I be transracial?
7 Answers4 weeks ago - 4Upvotes of all answers to this question
How to remove glue / adhesive residue from metal?
Favourite answer:Have you tried WD-40 (the miracle chemical?)
Acetone, petrol, dichloromethane are all the same class of chemical. I suspect your "glue remover" is more of the same (ethanol + C12-C14 alkanes). If they haven't worked so far, they're not going to do it.
5 Answers1 month ago - 3Upvotes of all answers to this question
A sample of gas has an initial pressure of 1.50 atm at a volume of 3.40 L at a temperature of 20.0°C. ?
Favourite answer:(3.40 L) / (20.0 + 273.15) K x (20.0 + 10.0 + 273.15) K x (1.50 atm / 2.50 atm) =
2.11 L
4 Answers1 month ago - 2Upvotes of all answers to this question
If our state was represented by just one food, what would it be?
Favourite answer:Granola. Fruits, nuts, and flakes.
7 Answers1 month ago - 5Upvotes of all answers to this question
4grams of sugar in a teaspoon looks like?
7 Answers1 month ago - 6Upvotes of all answers to this question
Where can you see or use Lithium????
10 Answers1 month ago - 5Upvotes of all answers to this question
one mole of a gas occupies 22.4 L at 0°C and 760 mm Hg. ?
Favourite answer:(22.4 L/mol) x (2.00 mol) = 44.8 L
(760 mmHg) x (44.8 L / 3.00 L) x (25 + 273) K / (273 K) = 12389 mmHg =
12400 mmHg
[Kenny B: Knowing the molar volume relieves you from knowing any value for R.]
4 Answers1 month ago - 16Upvotes of all answers to this question
What does phenolphthalein do?
Favourite answer:It turns color to indicate the pH of a liquid solution. It's also pretty good for weeding people out of spelling bees.
6 Answers2 months ago - 3Upvotes of all answers to this question
Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. ?
Favourite answer:2 Mg + O2 → 2 MgO
(4.99 g Mg) / (24.30506 g Mg/mol) = 0.20531 mol Mg
(8.79 g O2) / (31.99886 g O2/mol) = 0.27470 mol O2
0.20531 mole of Mg would react completely with 0.20531 x (1/2) = 0.102655 mole of O2, but there is more O2 present than that, so O2 is in excess and
Mg is the limiting reactant.
(0.20531 mol Mg) x (2 mol MgO / 2 mol Mg) x (40.3044 g MgO/mol) x (84.5 / 100) =
6.99 g MgO (product)
5 Answers2 months ago - 1Upvotes of all answers to this question
- 1Upvotes of all answers to this question
what are the uses of dry ice ?
8 Answers2 months ago - 17Upvotes of all answers to this question
What's stronger than acid?
Favourite answer:Acids aren't all equally powerful, they come in different concentrations. That's the important thing. One can even drink weak acids but drinking concentrated acids would cause a painful death. It's like asking how long is a piece of string?
11 Answers2 months ago - 8Upvotes of all answers to this question
Is carbon a gas at stp ?
5 Answers2 months ago - 2Upvotes of all answers to this question
What chemical is best for dissolving flesh? For a story?
I'm writing a book, chill. I just want to know so it can be accurate. Hydrofluoric acid was my original choice, but then Sodium Hydroxide came up and a few others, which would be the fastest? [Ok it's not just for the story, but I'm really into criminal cases and I'm curious so-]
5 Answers2 months ago