Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to make chemical solutions [title] Define a percent by weight/volume solution. [step] A percent solution simply means parts per hundred. For example by weight: a 10% solution by weight simply means that you have 10 grams of compound dissolved in 100 ml of solution.

Ending1: Ratio percent is one percent of your total weight. To understand how to divide a percent by the density ratio, subtract 100 from 100 to achieve 100 grams of compound. Ending2: It is not a big deal, however, since a 100 gram solution equals two kilograms of compound. [title] Use the terminology " more ", " greater. Ending3: [substeps] For an example by volume: a 23% solution by volume simply means that you have 23 ml of liquid compound in every 100 ml of solution. [title] Identify the volume of solution you want to make. Ending4: [substeps] You may have different finds of how much compound will be dissolved by different weights, such as lv. To calculate a percent solution, simply divide the number of grams by the volume of the solution in pounds and subtract that number from the number of liters of solution.

Answer format: ending1/ending2/ending3/ending4