Which of the elements shown has an atomic mass of 20 amu?

A) A
B) B
C) C
D) D

Consider the point on the plot where 10.0 g of naoh have been added. what amount of naoh, in moles, has been added? 0.308 mol fecl3 initially present

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?