Suppose the mass spectrum of a hypothetical monatomic element x contains a signal at mass number 13 and another of identical height at mass number 15.
a. sketch the mass spectrum. make sure each axis is properly labeled.
b. how many isotopes are present? why?
c. what are the fractional abundances of the isotopes? why?

How can you increase the ability of a gas to dissolve in a liquids?

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next