Tengo un objeto de hierro (Fe) puro, el cual presenta 1,2x1023 átomos de hierro. a)¿Que cantidad de hierro (mol) tiene el objeto?

b)¿Cuántos gramos de hierro tiene el objeto?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false