Mitchell records the amount of time a toy car takes to travel down a ramp one time for each of four slope angles. his lab
partner, sarah, suggests that he run the same set of trials two more times.
what arguments should sarah use to support her suggestion? check all that apply.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent