How do you prepare 1 percent of sodium citrate?

Answer 1

THE MEANING OF % IS

1 gm of substance in 100 mL of solvent.(w/v)

so you can prepare 1 % sodium citrate by dissolving 1.0 g of Sodium citrate in to 100 ml of water.

Answer 2

To prepare a 1% solution of sodium citrate, you would mix 1 gram of sodium citrate with 99 grams of water (for a total of 100 grams solution). Stir the mixture until the sodium citrate is fully dissolved in the water.