An atom with a mass number of 18 that contains 10 neutrons would have an atomic number of .

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

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Why is the melting of ice a physical change ?