Recent content by pisgahchemist

To increase the boiling point of water, you must elevate the vapor pressure. Anything you dissolve in water will decrease the vapor pressure and therefore, elevate the boiling point. You must heat the water to a higher temperature to bring the vapor pressure back up to the boiling point. It...

There are 4 significant digits in 0.05730 meters. Use the box and dot method. Draw a box around all the digits between the non-zero digits, including the nonzero digits. Draw a box around the digits 5-7-3. Then, if there is a decimal, box any trailing zeros. In this case there is one, so...

Total up the volumes of HNO3 and NaOH, then do the math... HNO3(aq) + NaOH(aq) --> NaNO3(aq) + HOH(l) 83.5 mL ..... 23.08 mL ..? M ..........0.0502M Find the moles of NaOH. There will be the same moles of HNO3. Moles over liters will give the molarity of the acid. 0.02308 L x (0.0502 mol...

The are fairly precise because they are all relatively close together. Precision is a way of describing the "reproducibility" in a set of data. Accuracy is how close the measurements are to the actual value. The mean of the data set is not very close to the accepted value, and so some...

The are fairly precise because they are all relatively close together. Precision is a way of describing the "reproducibility" in a set of data. Accuracy is how close the measurements are to the actual value. The mean of the data set is not very close to the accepted value, and so some...

Original natives of North America....Indium But then, I don't want to steal all your fun.

Read. Read. Read. Work problems. Read. Work more problems. Read. Ask questions. Read. Work even more problems ... Get the idea?

Read. Read. Read. Work problems. Read. Work more problems. Read. Ask questions. Read. Work even more problems ... Get the idea?

Compute the difference in mass between the reactants and products, then use E=mc^2 to calculate the energy released. For instance, in (a), deuterium reacts with tritium to make helium and a neutron. Add the masses of deuterium and tritium, and then subtract the mass of helium and a neutron...

"Dissolving a non-volatile solute in a solvent has the effect of extending the temperature range over which the solvent remains in the liquid phase." Sure, that's true, because a solution will have a lower freezing point and a higher boiling point. Check out "colligative properties" and...

Here's some additional info. That acidic water you spoke of doesn't contain any molecules of H2CO3. H2CO3 molecules cannot exist in aqueous solution. What we call "carbonic acid" is actually a solution of carbon dioxide dissolved in water. A small amount of the CO2 reacts with H2O to make H+...

Hey folks, it's the 21st century now. It's time we moved on from "shells". The shell concept is a bit archaic. We tend to use "energy levels" and "sublevels" these days. A chlorine atom has the following electron configuration: 1s2, 2s2 2p6, 3s2 3p5 So, if a "shell" is supposed to be an...

trisulfur octaboride, that is if it actually existed, which I'm pretty sure it does not. triboron noniodide, ditto, does not exist rhenium (II) acetate I'm pretty sure there is no V2(NO3)2, although there might be V(NO3)2 which is vanadium (II) nitrate ========== Follow up =========== ...

Curious? What's Zg? And Mg? Surely you don't mean mega-grams? But that is what a capital "m" means. Maybe you mean miligrams? That is mg. And surely you known by now that density = mass / volume and that the molar mass is the mass of one mole. If you know that PV = nRT then you know that...

Ok, Luke. You've submitted quite a few questions now and most of them have been exceedingly easy. It's time you started doing a little thinking on your own. Think about what the question is asking you and go down the list of possible answers and evaluate each one to see if it really answers...