Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

New answers tagged

3

Mole itself doesn't have a magnitude, but the value of mole does, in fact it is the magnitude. Any measurement has a magnitude (ie for the mass of 5 kg the magnitude will also be 5). I think you are confusing it with scalar measurements (ie forces) which also have a direction. For example 5 Newtons 'in that direction'. Mole is similar to a dozen (just a ...


0

What is the difference between dish soap, handsoap, body wash and shampoo? And can they all be used interchangably? : NoStupidQuestions Dish soap is focused on your dishes, as the name implies. It is meant for clearing out things like grease and oil off your plates by breaking down fats. Laundry detergent is still soap but with things like water ...


2

The test is administered by breathing through a tube, and the results become apparent immediately. Indeed, this has something to do with oxidation of alcohol. As soon as the alcohol in the exhale reaches the contents of the test tube, the latter changes its color, and the police guys put you in the handcuffs. Or it doesn't, and they don't. That's a wonderful ...


0

Though both $\ce{CO2}$ and particulate carbon (soot) cause warming, a direct mathematical relationship of the effects would be specious for a few reasons: The life-times of atmospheric $\ce{CO2}$ and soot differ, and vary with amount of sunlight (enabling plants to absorb $\ce{CO2}$, but not affecting soot appreciably), with amount of precipitation (...


0

If your chamber was small enough, you could try having racks of germinating seeds. As they sprout they would be absorbing a minuscule amount of co2. They wouldn’t need light. If you’ve ever made sprouts in your kitchen cupboard this can be easily achieved. I am going to try this. Sunflower would be ideal as they germinate easily, cheap and easy to come by.


1

If we consider this from a diffusion perspective, your concept might not be as effective as you might think. Graham's Law of diffusion and effusion of gases states that the rate of diffusion for a gas is inversely proportional to its molar mass ($M$): $$rate_\text{gas A} \propto \frac{1}{\sqrt{M_\text{gas A}}}$$ So, if we want to compare the rate of ...


3

Hansen Solubility Parameters (HSP) - is the short answer. Your observation has very much to do with the energy density of the solvents - with the idea that lesser the difference in the energy densities better is the ability of solvent to dissolve the solute. I am very poor at explaining things and not an expert in the matter at hand (please excuse me for ...


6

The name 'formic acid' has been derived from the name 'formica' as it is derived literally from ants. Wikipedia clearly states: The word "formic" comes from the Latin word for ant, formica, referring to its early isolation by the distillation of ant bodies. If you type 'formic acid etymology' in Google, it will give two links that proves the above ...


1

Safe in context of chemistry, physiology or long term health care prevention ? With zero knowledge, it is safer to stay with commercial products, until you know, what you are doing. For mouthwash, calcium carbonate is quite ineffective, being insoluble solid. Better would be solution of sodium bicarbonate ( baking soda ), present in some toothpastes as ...


Top 50 recent answers are included