answersLogoWhite

0


Best Answer

in dimensional analysis (for chemistry) your usually converting substances to moles or grams to figure out whatever you need for the problem. For units, you always want the units to cancel out as 1/7 * 7 cancels out to 1/1 or 1.

for example, if i want to find the molar mass of 3.00 moles of Carbon (C), this is your set up:

(3.00 moles Carbon)(36.03 grams Carbon/1mole Carbon)=108.09/1 grams Carbon=108 grams Carbon(using sig. figs)

in the problem above, since moles are the numerator, and you want to find how many grams are in 3 moles of carbon, you want to set up a ratio of moles per grams. Ratios can be flip flopped based on which units you need. So i look at the Periodic Table and see there are 12.01 grams per 1 mole, setting the ratio up so that when it multiplies 3 moles of carbon, the moles cancel and im left with grams of carbon, the units i want. It seems complicated but gets easier with practice.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do units work in dimensional analysis?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is an analysis that is the process of including units of measurement when you compute?

Dimensional analysis


What analysis is the process of including units of measurement when you compute?

Dimensional analysis.


Why does dimensional analysis work for calculations involving rates?

Why does dimensional analysis work for calculations involving rates


How do you change the units in the metric system?

How do you change metric units?


What are the uses of dimensional analysis?

dimensional analysis is very simple method for convert the one system of units into another system of units. And we can check the correctness of the equations. We can show the relations between physical phenomenal quantitatively.VALI


Units of power in dimensional analysis?

Power is work/time. work is force times distance so Power=force*distance/time or (P=f*L/T).


What is dimensional analysis?

a way to analyze and solve problems using the units, or dimensions, of the measurements.


Why dimensional analysis is important?

Dimensional analysis is important because it allows us to check the consistency of equations by ensuring that the units on both sides of the equation are the same. It helps in deriving relationships between physical quantities and simplifies problem-solving by reducing the number of variables involved. Additionally, dimensional analysis can be used to convert units and provide insight into the underlying physics of a problem.


What is the need of studying dimensional analysis?

Very useful in various practical contexts.checking that results of calculations are in units that are meaningful to work contextchecking that no terms have been omitted in a calculationoverall, numbers may tell you nothing without their units


Why is dimensional analysis the most appropriate way to solve in converting measurement?

It is not necessarily the most appropriate way. A proper understanding of the way in which different measurements are related is sufficient - without going into dimensional analysis. Dimensional analysis can be useful for people who have not got their heads around the relationships between units.


What is the method of treating units as algebraic quantities that can be cancelled called?

This technique is usually called dimensional analysis.


What is a method of problem-solving that focuses on the units used to describe matter often using conversion factors called?

dimensional analysis