The density of osmium ( the densest metal) is 22.57 g/cm^3. What volume would be occupied by 1.50 kg of osmium.

Density = Mass / Volume

V = 1.00 * 4.00 * 2.50 = 10 cm³

22.57 g/cm³ = Mass / 10 cm³

M = 22.57 g/cm³ * 10 cm³

M = 225.7 g

The mass of the block of osmium is 225.7 g.

Explanation:

Thanks to:

HomertheGenius

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.