Recent Homework Questions About Chemistry
Write the balanced equation for the hydration of CuSO4. Indicate the physical states using the abbreviations (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) to indicate the aqueous phase. Indicate appropriate charges on negative and positive ions if they are...
Friday, November 1, 2013 at 9:41pm
3.What would be the major product if 1,4-dibromo-4-methylpentane was allowed to react with: a)One equivalent of NaI in acetone? b)One equivalent of Silver Nitrate in ethanol?
Friday, November 1, 2013 at 5:33pm
Use wavelength = h/mv. You know wavelength (4.70 nm), h, and m. Solve for v. Then KE = 1/2 mv^2
Friday, November 1, 2013 at 3:48pm
See your post below. Convert fm to m.
Friday, November 1, 2013 at 3:47pm
Convert mi/hr to m/s. 1 mi/hr = 0.447 m/s. Then wavelength = h/mv
Friday, November 1, 2013 at 3:46pm
Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. a) If connected as voltaic cells in series, which two metals are plated, and what is the total potential? If 2.50 g of metal ...
Friday, November 1, 2013 at 11:39am
The pH at the equivalence point of HCl vs NaOH titration is 7.0. MO is not a good indicator for this titration because it changes about 3.5. A better choice is phenolphthalein which changes about 9 or even methyl red which changes about 5.0.Bromothymol blue or phenol red are ...
Friday, November 1, 2013 at 10:46am
If the thyroid test requires 3.2mCi in an "atomic!@#$%^&tail," how many milliliters are used to prepare the iodine-131 solution?
Friday, November 1, 2013 at 10:12am
Which of the following statements describes why ion exchange of 99% SiO2 - 1% B2O3 in a salt bath of molten postassium chloride (KCl) is not an effective way to increase the surface strength of the glass sample? The ion exchange works correctly, however both air-cooling and ...
Friday, November 1, 2013 at 5:32am
I am not sure if you have a typo, but for the reaction to be balanced, that should be Nitrous Acid (HNO2) in the reactant side: 3HNO2 -> HNO3 + H2O + 2NO Note that all the species here are neutral (zero charge). Thus the sum of the individual charges of each element ...
Friday, November 1, 2013 at 12:14am
now you just need to multiply 3.1 by two= 6.2 is the answer... because there two mole of NO2 on one mole of N2
Saturday, October 26, 2013 at 9:38pm
hi, what is the total mass of carbohydrates, fats, and proteins in a serving of eggplant?
Thursday, October 10, 2013 at 6:43pm
Monday, October 31, 2011 at 2:20pm
1. From n=4 to n=6
Saturday, October 22, 2011 at 10:12pm