Question 14 (2 points)
Read the following passage and find the two errors. Then, choose the answer that corrects the errors.
pH is a measure of the concentration of OH" ions in a solution of an acid or base. The pH scale plots the concentration of solutions in a range
from 0-16. (2 points)
Оа
pH is a measure of the concentration of Htions in a solution of an acid or base. The pH plots the concentration of solutions in a
range from 0-14.
Ob
pH is a measure of the concentration of Htions in a solution of an acid or base. The basic scale plots the concentration of
solutions in a range from 0-16.
Ос
pH is a measure of the concentration of OH ions in a solution of water. The pH scale plots the concentration of solutions in a
range from 0-12.
Od
pH is a measure of the concentration of OH ions in a solution of an acid or base. The acid scale plots the concentration of
solutions in a range from 0-16.
Answers: 3
Physics, 21.06.2019 23:10
A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m
Answers: 1
Physics, 22.06.2019 12:50
Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom
Answers: 1
Physics, 22.06.2019 15:30
Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
Answers: 2
Question 14 (2 points)
Read the following passage and find the two errors. Then, choose the answer...
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