The half life of plutonium is 24300 years. If a nuclear bomb released 8kg of this isotope how many years would pass before the amount is reduced to

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space