The Answer is D. Suspending a heavy weight with a strong chain.
B. is ur answer I bieleve
The mass of 254 mL of water is 254 g. Since the density of water is 1g/mL, we can simply multiply the density 1g/mL by 254 mL of water and get 254 g as our answer. Since mL is in the numerator and denominator, mL cancels out and we are left with g only.
A chemical reaction is the process by which a CHANGE takes place (?)