Which element would be the most suitable to make a spoon that will melt in your hot drinks?
A) aluminium
melting point: 660°C
boiling point: 2470°C

B) argon
melting point: -189°C
boiling point:-186°C

C) bromine
melting point: -7°C
boiling point: 59°C

D) gallium
melting point: 30°C
boiling point: 2400°C

E) lithium
melting point: 180°C
boiling point: 1330°C

F)mercury
melting point: -39°C
boiling point:357°C​

How does the motion of particles in a gas change as the gas cools

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

Displacement is the slope of a velocity vs. time graph a. true b. false