Scientific models are used to help us understand things that are either too small or too large to be seen by the human eye. TRUTH OR FALSE? PLEASE HELP THIS IS FOR A QUIZ THANK YOU!

Which of the following units is not an official si unit? mole liter kilogram ampere

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons