Chemistry
what effect does a catalyst have on entropy?
U.S. History
I can't think of ideas for this essay topic: What role does white resistance to integration play in the success of the civil rights movement by 1965?
U.S. History
I can't think of ideas for this essay topic: What role does white resistance play in the success of the civil rights movement by 1965?
Chemistry Lab
Nevermind I think i figured it out. But CaCO3 is supposed to react with water in the presence of CO2
Chemistry Lab
We did a lab where we reacted antacid with HCL and measured the pressure increase after the reaction. Then we found the percent concentrations of calcium carbonate of the antacid tablet. The question is: say the percent of calcium carbonate from trials 1 & 2 are consistent whi...
Chemistry Lab
We did a lab where we reacted antacid with HCL and measured the pressure increase after the reaction. Then we found the percent concentrations of calcium carbonate of the antacid tablet. The question is: say the percent of calcium carbonate from trials 1 & 2 are consistent whi...
Chemistry
Why does O3 have a dipole moment?
Chemistry
Ooh I forgot about that one. thank you
Chemistry
A beam of neutrons (mneutron = 1.6749 x 10^-24 g) has a velocity of 1.44 km/hour. What is the wavelength of the neutron wave? The answer is 993 nm. I tried to use 1/2mv^2=hc/lambda but I got 1483.5 m
Chemistry
When light of a wavelength of 125 nm strikes a certain metal, electrons having a velocity of 8.2 x 10^5 m/s are emitted from the surface of the metal. What is the threshold frequency of the metal? The answer is 1.9 x 10^15 s^-1 I'm not sure how to do this. The equations th...
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