# Help with This: A Guide for Finding Solutions

• Chemistry
• Vanillasyrup
In summary, "Help with This: A Guide for Finding Solutions" is a comprehensive guide intended for anyone who struggles with finding solutions. It covers a variety of topics and offers practical tips and techniques for effective problem-solving. The guide is based on the scientific method, making it a useful tool for daily life.

#### Vanillasyrup

Homework Statement
From the moment of inertia of C2H2 and C2D2, I have to calculate the C≡C and C-H (C-D) bond lengths. I am confused on how to form the 2 simultaneous equations.
Relevant Equations
rH=
rC=
I really need help with this.

#### Attachments

• Bond length.jpeg
20.3 KB · Views: 111
You need to at least show an attempt. What are the relevant equations?

Thank you for your reply. This is what I got so far but I am very unsure.
IH=(mCrC^2 + mHrH^2)x 2
ID=(mCrC^2+ mDrH^2)x 2

#### Attachments

• Screenshot 2022-03-06 171600.png
1.9 KB · Views: 120
What is the moment of inertia for a collection of point particles in general? Does this match what you have written?

Edit: my apologies. I see from the picture in OP how you have defined ##r_H## and ##r_C##. Your moment of inertia equations are correct. What is the next step?

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