[ARGOS++]

Dear reezyfbaby;

No!, - your equation is not balanced anymore!

It’s simple algebra, so I simply get:
v_UK² / v_CO2²    =    MW_CO2  /  MW_UK

Can you now solve the equation for MW_UK?

Good Luck!
                    ARGOS⁺⁺

[mr cool]

6.00 UK² / 12 CO2² = 44.0095 g CO2 / mw uk

I have no clue what to do next. We had square roots in the whole problem we did in class.

[ARGOS++]

Dear reezyfbaby;

You inserted values instead of rearranging the law for MW_UK!
And you used the wrong values for the speeds.

Please try to rearrange the formula before you insert any value!!

Think: How fast is CO₂, and what means twice so fast?

As you are asked for the MW so you have to remove/solve the square roots!!
Good Luck!
                    ARGOS⁺⁺