The molecular formula of citric acid is C 6 H 8 O 7. The chemical formula for citric acid is best shown by a diagram of its complete structural formula. This shows how the atoms are arranged in the molecule. Citric acid has three carboxyl or-COOH groups and is triprotic in nature.
In order to make tan you should mix white and brown. If you want to make the brown color yourself mix 2 parts of one primary color (like red) and 1 part of each of the other t â¦ wo (blue and yellow). The more white you use the lighter the shade of tan.
Why the need for these pigment colors: White: Simply put, you can't print white! To make a white image, you just print your artwork as black and add the white foil. Grey: Printing gray on any printer is actually individual back dots that mix with the white paper in between them creating the illusion of gray. The more space between dots, the lighter the 'shade'.