What enabled moseley to determine the number of electrons in atoms of particular elements?
a. he measured the mass of a given volume of the element
b. he measured the temperature of the element in an ice bath
c. he measured the different wavelengths emitted by the electrons of the element using x-rays
d. he measured the voltage passing through an element connected to a circuit

Which of the following pressures is equal to 760 mm hg? 2.0 atm 101.3 pa 101,300 kpa 101,300 pa

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: