Question

question 5
which step is not part of dimensional analysis?
multiplying numbers
writing conversion factors
canceling like units
adding unlike units
question 6
a patient needs 2.5 grams of medication. how many milligrams is this?
2500 mg
250 mg
25 mg
0.25 mg

Explanation:

Question 5

Dimensional analysis involves using conversion factors, canceling like - units, and multiplying numbers. Adding unlike units is not part of it as units must be consistent in dimensional analysis.

Step1: Recall the conversion factor

1 gram = 1000 milligrams, so the conversion factor is $\frac{1000\ mg}{1\ g}$.

Step2: Multiply the given value by the conversion factor

$2.5\ g\times\frac{1000\ mg}{1\ g}=2.5\times1000\ mg = 2500\ mg$

Answer:

D. adding unlike units

Question 6