How much would the temperature of iron change if 32.9 kg has 784 KJ of energy added to it?

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

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1