An alpha particle (mass=6.6x10^-24g) emmited by a radium isotope travels at 3.4x10^7 mi/hr. what is its de broglie wavelength in meters

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?