Integers Rules ADDITION When we ADD a POSITIVE number we move UP the number line. e.g. (-3) + 7 = 4 When we ADD a NEGATIVE number we move DOWN the number line. e.g. 2 + (-8) = -6 SUBTRACTION When we SUBTRACT a POSITIVE number we move DOWN the number line.ntegers Rules ADDITION When we ADD a POSITIVE number we move UP the number line. e.g. (-3) + 7 = 4 When we ADD a NEGATIVE number we move DOWN the number line. e.g. 2 + (-8) = -6 SUBTRACTION When we SUBTRACT a POSITIVE number we move DOWN the number line.
Commercially sold distilled white vinegar in the US is acetic acid in water, at a concentration of 5% by mass for a pH of around 2.4â2.6. If you add water to it, the pH will go up. If you distill it (vinegar is more volatile than water) the resulting distillate will have a lower pH.
They are only soluble in a mild acid solution. I would start with a clear white vinegar, diluted 50:50 with water, and see if that brings the stains out. You will need to apply the acid solution on the stain multiple times, scrub lightly, and then rinse.Test in a small area to ensure you are getting the results you desire. If the vinegar does not work, you may need to try a stronger acid, such as muriatic. Dilute the stronger acid 40:1 with water.Also, be aware that the acid may etch or change the profile of the concrete in the areas you clean. Find Concrete Cleaning Products. Stains on a concrete patio resulting from plant fertilizer.ou will need to apply the acid solution on the stain multiple times, scrub lightly, and then rinse. Test in a small area to ensure you are getting the results you desire. If the vinegar does not work, you may need to try a stronger acid, such as muriatic. Dilute the stronger acid 40:1 with water.