Please answer this and explain solubilty. If a gas is soluble in water does it dissolve in it or collect at the top?

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

The number at the end of an isotope’s name is the number.