URGENT!! How many grams are there in a sample of calcium containing 5.42 x 1020 particles? a.0.036 g
b. 0.020 g
c.0.018 g
d.0.040 g

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

What happens when the temperature of a solution increases?