Hey guys i nned help ASAP :) :) its due tomorrow so help :) :)
show ur work and ill mark brainliest :) :)

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

What is the volume of the sphere shown below with a radius of 3?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?