Ok, here you go. I attached a picture of my work. If I'm wrong hopefully somebody will tell me but I'm pretty sure I got it, lol.
Unfortunately the conversion from cm3 to cups is not a pretty one, so the numbers aren't very even. You'll have to do a bit of guesstimating in your measurements. 200 grams of citric acid is ~0.51 cups. Call it half a cup. Baking soda is a little trickier, with 200 grams ~0.38 cups. 0.38 cups is equal to 6.08 tablespoons so 6 tablespoons might be a better measurement.