- log(2.0 X 10 -3 M)
= 2.7 pH
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103/20
103
103/20
To find 20 percent of a number, multiply the number by 0.2. In this instance, 0.2 x 515 = 103. Therefore, 20 percent of 515 is equal to 103.
A triangle with angles measuring 103°, 20°, and 57° is classified as an obtuse triangle because one of its angles (103°) is greater than 90°. The sum of the angles in any triangle is always 180°, and in this case, 103° + 20° + 57° equals 180°. Thus, the triangle is valid and has one obtuse angle along with two acute angles (20° and 57°).
This means that for every volume of hydrogen peroxide used, 20 volumes of oxygen will be produced. For example, if 1 ml of hydrogen peroxide is used/decomposes, 20 ml of oxygen will be formed.
20% of 515 is 103
20% of 103.00 = 20% * 103 = 0.2 * 103 = 20.60
Hydrochloric acid 20 Be refers to a solution of hydrochloric acid where the concentration is such that it corresponds to 20° Baumé (Be) scale. This scale measures the density of a solution as compared to the density of water. A 20 Be hydrochloric acid solution is typically around 18-20% concentration of hydrochloric acid by weight.
103/20
103
d. 100. The pH scale is logarithmic, so each decrease of one pH unit represents a 10-fold increase in hydrogen ion concentration. Therefore, a solution with a pH of 6 has 100 times more hydrogen ions than a solution with a pH of 8.
To dilute 20 volume hydrogen peroxide to make a 3% solution, mix 1 part of 20 volume hydrogen peroxide with about 6 parts water. This will result in a 3% concentration of hydrogen peroxide. Remember to handle hydrogen peroxide carefully and wear appropriate protective gear.
No because 20% of 606 is 121.2
20.60
103/20
103/20