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.
I decided to do some online investigation to see if the vinegar fumes really are toxic, and I came across this website. Basically, a science teacher got cited for having a sealed bottle of food-grade vinegar not in a special dangerous-acids cabinet.Go figure...your salad will kill you...or something. am sensitive to the fumes in white vinegar. Apple cider vinegar doesn't seem to bother me as much. My husband just used Tabasco sauce on his rice tonight and the fumes from the vinegar in the sauce caused my chest to pain. I am very chemically sensitive and fume sensitive anyway but this took me by surprise.