# Search results

1. ### Chemistry: Mixture and Mass

I've calculated the proper mass; thank you very much for your help.
2. ### Chemistry: Mixture and Mass

Sorry, I was slightly confused. Now I have found there to be .266 g of Br and 1.05 g of Cl, matching the total mass. Thank you for the help so far, but I have one final question. How do I determine the mass of NaBr from the mass of Na and Br when Na is split into two different molecules?
3. ### Chemistry: Mixture and Mass

I did: \frac{.76 g Na}{1} x \frac{mol Na}{22.99 g} = .033 mol Na 2.08 gmixture - .76 gNa = 1.32 gCl + Br I then tried: \frac{.033 mol Na}{1} x \frac{mol Br}{2 mol Na} x \frac{79.909 g}{mol Br} = 1.32 g Br That mass of Br cannot be true, so apparently I am doing something wrong.
4. ### Chemistry: Mixture and Mass

Homework Statement A mixture of NaCl and NaBr has a mass of 2.08 g and is found to contain 0.76 g of Na. What is the mass of NaBr in the mixture? Homework Equations Molar mass equations (possibly), formula mass The Attempt at a Solution I've calculated the percent composition of Na in...
5. ### Seperation effects on the forces of gravity and eletricity

Homework Statement Two charged pellets are pulled apart to twice their original separation. (a) Which is likely to be larger, the gravitational force or the electrical force between them? Why? (b) Which will change by a greater factor when they are pulled apart, the gravitational force or the...
6. ### Metal and wood common temperature for neutral feel

That must be it -- at that temperature no energy would be needed to be transferred to your skin and thus there would be neither hot nor cold feeling. Thanks.

Metal.
8. ### Metal and wood common temperature for neutral feel

Metal and wood common temperature for neutral "feel" Homework Statement Taken from the homework: At what common temperature will a block of wood and a block of metal both feel neither hot nor cold to the touch. Homework Equations I believe it is just conceptual, so I do not know if one...