Desperate for Chemistry Help. 10 Points!?

Mandy

New member
Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?



Also....


Identify the oxidizing and reducing agents in the following (unbalanced) equation.

HNO3(aq) + C2H6O(aq) + K2Cr2O7(aq) (yields) KNO3(aq) +C2H4O(aq) +H2O(l) + Cr(NO3)3(aq)


Also...

A 225mL gas sample weighing 0.292 g is at 52,810 Pa and 127*C
a. How many moles of gas are present?
b. What is the molar mass of the gas?



And also...

What is the oxidation number of P in P4?



Answers and explanations would be greatly appreciated. Thank you for anyone help anyone can give!
 
Back
Top