Identify the letter of the choice that best completes the statement or answers the question.

how close a measured value is to an accepted value is called a(n)

a.
accuracy.

b.

percent error.

c.

measured value

d.

precise measurement.

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d. the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work