What would you predict about a chemical that has a hydrogen ion concentration of 1 × 10^−12 m?
a) it will form salt and water when added to a base.
b) it contains no hydroxide ions.
c) it has high concentration of hydroxide ions.
d) it has a sour taste.
it's not b, and i'm pretty sure that it's not c what would it be?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.

Am i correct on these two physics questions?