When forming molecules, electrons are either lost, gained or shared. what is the number of valence electrons atoms are trying to obtain? a) 7 b) 8 c) 18 d) 24 plz hurry

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .