I need help pliss What is the electric force acting between two charges of 0.0042 C and -0.0050 C that are 0.0030 m apart?

How many molecules are found in 1.32 mol of nacl?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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