One brand of vinegar has a pH of 4. 5. Another brand has a pH of 5. 0. The equation for the pH of a substance is pH = –log[H ], where H is the concentration of hydrogen ions. What is the approximate difference in the concentration of hydrogen ions between the two brands of vinegar?.

-2 is the right

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7

“a term can be a signed number, a variable, or a constant multiplied by a + sign or j sign. in , the terms are 5x , 3y and 8. when a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.” i hope this you.